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Parts and Components

Full Parts and Components Catalog Available from Tread Bike Shop

Specialized Power Cranks Dura-Ace Dual
$1,500.00
No matter your skill level or experience on the bike, there's no better way to enhance your training and racing performance than by riding with a power meter. And for all of you Dura-Ace fans out there, we've combined our extremely light power sensors with a Shimano Dura-Ace crankset to give you the most accurate and precise power meter available. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answers the "real-world" accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion Lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real-world scenarios (+/- 1.5%). The Dual-Sided S-Works Power Cranks utilize separate strain gauge systems to individually measure the effort produced by each leg. This maximizes the accuracy of your total power numbers, plus it helps you to better understand your performance as fatigue increases and when you're recovering from injury. And with class-leading temperature compensation firmware and waterproof enclosures, Power Cranks are easy to live with. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO - Independent, dual-leg power measurement - Works with ANT+ and Bluetooth devices - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available) - Available in 170-175mm crankarm lengths - All models include 52/36T chainrings
Specialized RockShox SID WC with Brain
$1,300.00
Sure, there are plenty of lightweight XC forks out there, but racing demands so much more. Nimble handling, gram-obsessed weight, buttery damping—combined, they all make the difference between a good fork and a great fork. And with this in mind, the all-new RockShox SID World Cup Brain fork has been completely redesigned to meet the demands of XC racing, and hyperbole aside, we can confidently say that it sets the bar for race-worthy performance. The all-new Brain damper uses position sensitive technology for better chassis balance and traction. It does this while retaining the ability to separate rider input from bump events on the trail—just some of the incredible stuff that Brain is known for. The new technology can now remain active during the initial 25mm of travel, and this creates a much more balanced riding position and supple front-end feel. In turn, this goes a long way in reducing rider fatigue. And although the fork feels more active initially, as soon as you standup to get on the gas, the forward shift in weight naturally compresses the fork into the platform. So yeah, you'll feel well supported and efficient during hard sprint efforts. Incredibly, Brain does all this while keeping you in control and riding smooth on rough terrain without any need for extra cables and lockout levers on the handlebars. The World Cup Brain edition of the SID is not just a slight upgrade over the RLC and XX models, either. Along with the integrated Brain technology, it utilizes a carbon fiber steerer and crown, which reduce weight by over 100 grams and increases the overall stiffness. Also adding to the stiffness of is the short-travel-specific design. Leaving the 120-millimeter segment to the trail category, RockShox’s engineers were able to focus on the 80- to 100-millimeter travel range, and therefore develop lighter and stiffer uppers and air shafts. This new design, along with SRAM's Torque Caps (they create an enhanced interface between the hub and fork dropout), Power Bulge technology that reinforces the lowers, and 110-millimeter Boost spacing, keeps torsional stiffness high, allowing you to point-and-shoot while descending. Last, but certainly not least, on the feature spec is the Solo Air spring that’s customizable with RockShox’s Bottomless Tokens. The Solo Air spring lets you adjust pressure with a single Schrader valve that controls the pressure in both the positive and negative air chambers, making adjustments to pressure simple and intuitive. To customize ramp-up preference, RockShox’s Bottomless Tokens can be added to create a suspension curve that’s custom to your preferences. - Tapered Full Carbon Steerer tube - Top-adjust Brain damper w/ Position Sensitive technology - 110mm spacing with Torque Cap compatibility - 100mm of travel
Pro Missile EVO
$1,199.99
The Missile EVO is a full UD Carbon aerodynamic design that meets UCI requirements. It's ideal for applications where optimizing aerodynamics is critical. - Wide adjustability of armpads and extensions for optimal ergonomic and aerodynamic positions - Integrated brake and shift cable routing (Also for Shimano Di2) - Weight: 595g
Specialized Ohlins RXF 36 Coil 27.5+/29-inch Fork
$1,150.00
The Ohlins RXF 36 Coil fork uses the same chassis of the RXF 36 fork, keeping the same stiffness, room for bigger tires, and proprietary TTX damping technology, but instead uses high quality coil springs that are easily swapped for various rider weights and it utilizes. This provides a ride with great feel throughout the travel—from small bumps to big hits. - Features a coil spring, with multiple spring rates in 0.9N/mm / 5lb/inch increments, allowing for a plush, linear suspension feel, tuned specific for the riders weight. - TTX (Twin Tube) damping enables separated oil flow, so the fork will always provide the perfect degree of pressure. This way, it stays smooth and high in the travel without compromising bump absorption, traction, or stability. - A tapered alloy steerer and two piece crown ensure high stiffness and tire control with less chassis flex and chassis hysteresis. 36mm stanchions with 51mm offset for party time on the trail. - 150 and 160mm travel options available. - 110 x 15mm spacing makes it compatible with most 29-inch setups.
Specialized S-Works Power Cranks - Dual-Sided
$1,150.00
No matter your skill level or experience on the bike, there's no better way to enhance your training and racing performance than by riding with a power meter. Lucky for you, Specialized has combined their incredibly light and stiff carbon fiber S-Works road cranks with dual-sided power measurement, making it the lightest (440g/172.5mm) and most accurate power meter available. The development of Power Cranks began with Specialized's Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, they found that neither of these methods answer the "real-world" accuracy question. To get the best test for accuracy, in all types of riding scenarios, Specialized built their own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets them evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is their gold-standard for testing power meters, and through their testing and external validation from the Locomotion lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real world scenarios (+/- 1.5%). The Dual-Sided S-Works Power Cranks utilize separate strain gauge systems to individually measure the effort produced by each leg. This maximizes the accuracy of your total power numbers, plus it helps you to better understand your performance as fatigue increases and when you're recovering from injury. And with class-leading temperature compensation firmware and waterproof enclosures, Power Cranks are easy to live with. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/-1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Independent, dual-leg power measurement. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Hollow carbon crankarms, carbon spider, and oversized alloy spindle offer superior stiffness and lighter weight than the competition—440 grams for 172.5mm crankarm length. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell, as well as most BB30 road frames. - 110 BCD carbon spider (also compatible with 130 BCD carbon spider—sold separately). - Compatible with Shimano and SRAM drivetrains. Chainrings are sold separately. Use only with Specialized/Praxis chainrings 06217-1702 (52/36T) and 06218-1713 (50/34T). - Available in 165-180mm crankarm lengths.
Specialized Ohlins RXF 36 27.5-inch Fork
$1,100.00
The Öhlins RXF 36 fork drafts off of the success of the 34, while bringing more stiffness and room for bigger tires. It operates off of a three-chamber air spring design (two positive and one negative), and it utilizes proprietary TTX damping technology. Combined, this allows both parallel and separated oil flow that controls the overall pressure levels. In a practical sense, this means that the fork is guaranteed to remain high in the travel, while also ensuring smoothness and predictable bump absorption throughout the entire ride. The shape of the spring force is also capable of being adjusted, which allows riders more fine-tuning options for preferences like increased sensitivity without the threat of bottoming out. Öhlins has increased the stanchions to 36mm and upped the spacing to 110mm with an ultra-stiff two-piece alloy crown design. This means that it'll experience less flex for more tire control, while also trimming down on some weight. - Features a three-chamber air spring, with two positive chambers and one negative, allowing for an offset of spring pressure that perfectly mates stiffness with a plush, responsive ride quality. The shape of the spring curve can also be adjusted to increase sensitivity without bottoming out. - TTX (Twin Tube) damping enables separated oil flow, so the fork will always provide the perfect degree of pressure. This way, it stays smooth and high in the travel without compromising bump absorption, traction, or stability. - A tapered alloy steerer and high alloy two-piece crown ensure high stiffness and tire control with less chassis flex and chassis hysteresis. 36mm stanchions with 46mm offset for party time on the trail. - 150 and 170mm travel options available. - 15x110mm spacing.
Shimano Dura-Ace R9170 Di2 Hydrualic Disc Brake/Lever Set
$651.99 - $970.99
Shimano dual control hydraulic disc brake levers. - More controllable and confidence in race condition - Optimally balanced hydraulic brake system for racing - Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddles - Lightweight - Carbon composite plastic material of hood - More intuitive, quicker shifting operation - More defined click feeling and ergonomic shift lever position - Customizable function to fit any riding style - Each switch has the option for multi-shift ON or OFF - E-TUBE project - Optimum power transmitted with grip firmly - Ideal ergonomic cover shape with better thickness & tenderness - Openable hood cover - Simple set up and maintenance - Easy replace hood cover - Openable hood cover - Customizable the function to fit in rider's riding style
Specialized Turbo Levo Battery with Rock Guard
$900.00
The Custom Li-Ion Turbo Levo Battery has a 504Wh capacity and works with all Turbo Levo models. The battery also includes an ANT+/ Bluetooth module that enables the bike to work with the Specialized Mission Control App or any other ANT+ device. Lastly, it has a rock guard and all of the hardware required for installation. - Battery features a 504Wh capacity - Works for all Turbo Levo models - ANT+/Bluetooth module works with Specialized's Mission Control App and any other ANT+ device - Includes rock guard and all hardware
Shimano Dura-Ace 9120 11-Speed Dual Control Levers w/Hydraulic Brakes
$378.99 - $828.99
- Quick And Intuitive Rear Shifting Operation - Shorter Lever Stroke - Redesigned Internal Shifting Unit - Lighter Front Shifting Operation - Redesign Front System With New Front Derailleur - Comfortable Grip And Operation - More Customizable And Precise Lever Position - Expanded Reach Adjustment Range (14 Mm) Mechanical Brake - Consistent Braking Performance In Any Condition - Easy Brake Control Hydraulic Brake
Shimano Dura-Ace 9150 Di2 11-Speed Dual Control Levers
$334.99 - $685.99
- More Control And Confidence In Race Conditions - Optimally Balanced Hydraulic Brake System For Racing - Dedicated Brake Lever Shape, Stroke, Contact Point, Stiffness And Dedicated Shift Paddles - Light Weight - Carbon Composite Plastic Material Of Hood - More Intuitive, Quicker Shifting Operation - More Defined Click Feeling And Ergonomic Shift Lever Position - Customizable Function To Fit Any Riding Style - Each Switch Has The Option For Multi-Shift On Or Off - E-Tube Project - Optimum Power Transmitted With Grip Firmly - Ideal Ergonomic Cover Shape With Better Thickness & Tenderness - Openable Hood Cover - Simple Set Up And Maintenance - Easy Replace Hood Cover - Openable Hood Cover - Customizable The Function To Fit In Rider'S Riding Style
SRAM RED eTap Rear Derailleur
$649.00 - $670.00
The SRAM RED eTap rear derailleur executes shifts the instant you demand it, with military precision. Wirelessly. It’s easy to set up, clean in appearance and delightfully uncomplicated. Mechanical necessities such as a carbon pulley cage, ceramic pulley bearings, and anodized alloy artfully blend with proprietary electronic advancements to deliver a shifting wonder. - Compatible with SRAM RED eTap shift/brake controls - Max tooth size: short-cage - 28T; mid (WiFLi) cage - 32t - SRAM RED eTap shifting logic - Wireless connection via AIREA network for fast and clean installation - Exact Actuation provides precise gear selections - Designed to work with SRAM PowerGlide and PowerdomeX cassettes - Speeds: 11-speed - Weight: 239 grams (short cage with battery) - Outer Cage: Carbon - Compatibility: SRAM RED eTap, PowerdomeX & PowerGlide Cassette - Inner Cage: Carbon - Finish: Black - Pulleys: Ceramic - Pull: Exact Actuation
Shimano Dura-Ace 9150 Di2 11-Speed Rear Derailleur
$659.99
- Ergonomic Shifting Operation Without Stress - Shimano Synchronized Shift - Low Profile Rear Derailleur Design - Shimano Shadow Rd - Race Endurance For Less Damage In Crush - Maintains Compact And Smooth Appearance - Maximum Sprocket: 30T - Minimum Sprocket: 11T - Maximum Front Difference: 16T - Total Capacity: 35T
Specialized Enduro Ohlins Shock
$650.00
The Ohlins Enduro Shock Absorber for 26/650B/29 provides the ultimate in low-hysteresis damping performance for enduro riding & racing, whether it's in straight line or side load scenario. The Shock Absorber also features a three-way external adjust for high- and low-speed compression, as well as rebound, for total fine-tuning capability. The adjustment ranges are intuitive, as well, with external adjustments for high-speed compression, low-speed compression, and rebound damping. Spring rates are also highly adjustable for all weights, effectively rounding out the shock as the complete enduro package. - It's the original gold standard for moto, and now, it's the gold standard for enduro. - Upper eyelet pin reducer hardware specific for the Enduro 26/650B/29. - Internal bladder features a motocross-inspired design, plucked ripe from the MX legends at Ohlins. - Ultra-fine spring rates ensure the perfect spring rate across all weights. This guarantees optimal performance for any setup. *Please note that springs are sold separately. - Designed for external adjustments for high- and low-speed compression, as well as rebound damping. - Compatible with Enduro 26 model year 2014. - Compatible with Enduro 650B from model years 2015 to 2016. - Compatible with Enduro 29 from model years 2013 to 2016. - Compatible with MY17 & MY18 Enduro 29 and 650B models.
Specialized Ohlins SJ FSR 650b/29 Shock Absorber
$650.00
The Ohlins SJ FSR Shock Absorber for 650b/29 provides the ultimate in low hysteresis damping performance for enduro riding & racing, whether it's in straight line or side load scenario, The Shock Absorber also features a three-way external adjust for high- and low-speed compression, as well as rebound, for total fine-tuning capability. The adjustment ranges are intuitive as well, with external adjustments for high-speed compression, low-speed compression, and rebound damping. Spring rates are also highly adjustable for all weights, effectively rounding out the shock as the complete enduro package. - It's the original gold standard for moto, and now, it's the gold standard for trail riding. - Upper eyelet pin reducer hardware specific for the MY16-18 SJ FSR. - Internal bladder features a motocross-inspired design, plucked ripe from the MX legends at Ohlins. - Ultra-fine spring rates ensure the perfect spring rate across all weights. This guarantees optimal performance for any setup. *Please note that springs are sold separately. - Designed for external adjustments for high- and low-speed compression, as well as rebound damping. - Compatible with Stumpjumper FSR and Rhyme FSR 650b and 29 (model year 2016-2018). - Uses specific Ohlins ultra lightweight steel springs. *Please note that springs are sold separately.
Pro Missile EVO Carbon Basebar
$649.99
The Missile EVO is a full UD Carbon aerodynamic design that meets UCI requirements. It's ideal for applications where optimizing aerodynamics is critical. - Perfectly match with Missile EVO clip-on aero extenders - Including 4 spacer adapters for under bar and top bar mounting - Ideally paired with the Missile EVO stem for optimal aerodynamics and optics - Weight: 295g
Shimano XTR Di2 Rear Derailleur (Long Cage)
$630.99
Shimano's unbelievable Di2 technology has made the leap to the trails with their XTR Di2 drivetrain. This rear derailleur features all of the race-day performance you've come to expect from XTR, and the unrivaled stability, speed, and performance of an electronic drivetrain. Since there aren't any cables to stretch or housing to create friction, shift performance stays amazingly perfect, delivering flawless shifts any time, under any condition. System communication with the front derailleur eliminates chain rub and, if you prefer, the rear derailleur can be optimized to use Shimano's Synchronized Shift technology.
Shimano XTR Di2 Rear Derailleur (Medium Cage)
$630.99
Shimano's unbelievable Di2 technology has made the leap to the trails with their XTR Di2 drivetrain. This rear derailleur features all of the race-day performance you've come to expect from XTR, and the unrivaled stability, speed, and performance of an electronic drivetrain. Since there aren't any cables to stretch or housing to create friction, shift performance stays amazingly perfect, delivering flawless shifts any time, under any condition. System communication with the front derailleur eliminates chain rub and, if you prefer, the rear derailleur can be optimized to use Shimano's Synchronized Shift technology.
Shimano Ultegra R8020 Hydraulic Dual Control Levers
$268.99 - $613.99
Shimano Ultegra R8020 hydraulic shift/brake levers. - Greater rider control in all conditions - Hydraulic disc brake provides the next stage of control - Small bracket size improves ergonomics - Greater reach adjust range - Quick and intuitive rear shifting operation with redesigned internal shifting unit - Model Number: ST-R8020 - Series: Ultegra - Shift Cable Casing: OT-SP41 - Shift Cable: Polymer coated - Average Weight: 550 grams/pair
Shimano Ultegra R8070 Di2/Hydraulic Dual Control Levers
$269.99 - $611.99
Shimano Ultegra ST-R8070 Di2 hydraulic disc brake dual control levers. - Intuitive shifting operation - Updated features and more defined click feeling - Clearer separation between shift buttons support quick and precise shifting while operating with thick gloves - Customizable functionality to match the rider's style - Each switch has the option for multi-shift ON or OFF - E-TUBE PROJECT - Programmable function of ST top button remote switch for third party cycle computer and shifting - Greater rider control in all conditions - Hydraulic disc brake provides the next stage of control - Small bracket size improves ergonomics - Customize each SW for multi-shift on or off per SW through E-tube project App. - Greater reach adjust range and free stroke adjuster - Lightweight race-ready materials - More quick and precise shifting while operating with thick gloves - 2x11-speed - Average Weight: 180 grams
Shimano Dura-Ace 9100 11-Speed Crankset
$600.00
- Optimum Power Transfer - Best Balance For Lighter Weight (-7G) And Efficiency - New Designed Crank Arm - Maintains High Rigidity And Reduces Weight - Hollowglide - 4-Arm Construction Crankset - Adapted For Race Specific Disc Brake System - Shorter Length Of Rear Center With O.L.D. 135mm - Redesign The Gear Teeth Profile To Fit Wider Gear Pitch - 50-34T/53-39T/54-42T/55-42T/52-36T - Iconic Design - Chain Line: 43.5
Shimano XTR Hollowtech II M9100-2 Crankset
$592.99
Shimano XTR M9100 cranks feature a lightweight and rigid design thanks to Hollowtech II crank construction. Chainrings can be easily exchanged with the direct mount system and one key release. - Double front chainring set up - Combines wide range and close gear steps - Gear tooth profile designed for MTB riding usage - Crank can be exchanged between single and double front chainring set ups
Shimano XTR M9120 Boost Crankset
$592.99
Shimano XTR M9100 cranks feature a lightweight and rigid design thanks to Hollowtech II crank construction. Chainrings can be easily exchanged with the direct mount system and one key release. - Double front chainring set up - Special gear teeth profile designed for MTB riding usage - Crankset can be used as a common component - Smoother driving even over bumpy terrain - Lighter and stiffer design - Direct mount system enables easy chainring swaps - Q-factor: 168 mm - Chainline: 52 mm - Bottom bracket compatibility: Hollowtech II - 12-speed
Shimano STEPS CITY E6010 Down Tube Battery
$586.99
- BT-E6010 (battery) / SM-BME61 (battery mount) - Consistent performance, minimally affected by weather and temperature - Long life design, greater than 1,000 charge cycles - BT-E6010 features easy mounting and release
Pro Missile EVO Clip-On Aero Extensions
$579.99
Missile EVO clip-on carbon aero extensions for triathlon and time trial cyclists. - For "under bar" and "top bar" mount - Wide adjustability of armpads and extensions for optimal ergonomic and aerodynamic positions - Wide and 1cm thick microfiber arm pads - Clamp diameter: 31.8mm
Shimano Dura-Ace R9120 Hydrualic Disc Brake/Lever Set
$579.99
The R9120 Dual Control Lever offers a shorter lever stroke, an expanded reach adjustment range for precise lever position, and lighter front shifting operation for quick and intuitive shifting and braking in all situations. Further improvements are its renewed hood cover material and its comfortable ergonomic shape with more grip. - Quick and intuitive rear shifting operation - Consistent braking performance in any condition - Easy brake control hydraulic brake - 11-speed compatible
Shimano Dura-Ace 9100 11-Speed Dual Control Levers
$264.99 - $550.00
- Quick And Intuitive Rear Shifting Operation - Shorter Lever Stroke - Redesigned Internal Shifting Unit - Lighter Front Shifting Operation - Redesign Front System With New Front Derailleur - Comfortable Grip And Operation - More Customizable And Precise Lever Position - Expanded Reach Adjustment Range (14 Mm) Mechanical Brake - Consistent Braking Performance In Any Condition
Specialized Power Cranks - Shimano Ultegra Upgrade Kit
$525.00
Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And the Power Cranks Ultegra Upgrade Kit are no exception. With our lightweight power sensors on a Shimano Ultegra crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answers the 'real-world' accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion Lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real-world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth® devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Shimano 8000 generation Ultegra left-side power measurement. - Right crankarm and spider NOT included. - Available in 170-175mm crankarm lengths.
Specialized Power Cranks - Shimano Ultegra Upgrade Kit
$525.00
Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And, the Power Cranks Ultegra Upgrade Kit is no exception. With our lightweight power sensors on a Shimano Ultegra crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crank arm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answer the "real-world" accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and carrying various types of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - -/+ 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app (iOS and Android versions available). - Shimano 8000 generation Ultegra left-side power measurement. - Right crank arm and chainring NOT included.
SRAM RED 11-Speed Crankset
$439.00 - $476.00
Already a legend in its time, the SRAM RED crankset is now available with refreshed graphics to complement the SRAM RED eTap componentry. The SRAM RED crankset features a completely hollow construction all the way to the spider. Its hidden bolt pattern makes better use of carbon fiber to further improve stiffness and shed weight. As always, for seamless, flawless performance and Yaw compatibility, pair this crank with X-GlideR chainrings. - SRAM Road 11-speed compatible - Compatible with SRAM RED eTap components - Exogram technology uses a large, hollow cross section all the way to the spider, minimizing weight while maximizing stiffness - SRAM's stiffest crank ever - Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance - Stiffer X-GlideR chainrings feature thicker construction and advanced shift timing pins and ramps, which are optimized for shifting with the Yaw front derailleur - Arm Material: Carbon - Chainring Material: Machined alloy - Weight: 557 grams (BB30 172.5mm 53x39 BB not included) - Compatibility: SRAM RED & SRAM Force Yaw Front Derailleur, SRAM RED 22 & PC1170 chains - Finish: Carbon - Bottom Bracket Compatibility: BB30, PressFit 30
Pro Vibe Aero Superlight Handlebar
$469.00
The Vibe Aero Superlight handlebar is constructed of a UD carbon fiber layup with Innegra, resulting in a bar that's ready to ride in the harshest conditions. It features an ergonomic oversized top section, compact design, and integrated brake and shift cable routing, perfect match for Shimano Di2.
Shimano Dura-Ace Track Crank
$459.99
Shimano's Dura-Ace Track Cranks transform every last watt into oval-scorching speed in the velodrome. These cranks set the bar for low weight and unmatched efficiency, with hollow forged aluminum crank arms and an Octalink bottom bracket (sold separately) for power transfer and acceleration that will blow you, and those trying to hold your wheel, away.
Pro Vibe Superlight Handlebar
$439.00
The Vibe Superlight handlebars feature a compact design and an ergonomic oversized top section for supreme comfort on the road. It's constructed of a super-light UD carbon fiber layup with Innegra fiber. The integrated brake and shift cable routing matches perfectly with Shimano Di2.
Specialized Command Post WU
$425.00
The Specialized Command Post WU uses a unique mechanism to tilt the saddle nose up as the post moves through its travel, resulting in 150 millimeters of effective drop that increases the effective post travel. Meanwhile, it ensures that you get the proper body position with the saddle in a dropped position. This increased effective drop, along with the 14 distinct height options that come with our Cruiser Control technology, makes for a more enjoyable ride, whether you're climbing or descending. - Unique "WU" mechanism tilts the saddle 14 degrees nose up, allowing for longer effective saddle drop. - Mechanical locking Cruiser Control technology has 14 distinct positions. - Lightweight aluminum micro adjustable head. - Dual-keyway system eliminates saddle wiggle. - Triple-lip wiper prevents dirt and water contamination . - 34.9mm seatpost diameter. - 150mm effective drop.
Specialized Power Cranks - Shimano 105 Upgrade Kit
$425.00
Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And the Power Cranks 105 Upgrade Kit are no exception. With our lightweight power sensors on a Shimano 105 crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crankarm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answers the 'real-world' accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and a myriad of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion Lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real-world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - +/- 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app. (iOS and Android versions available). - Shimano 5800 generation 105 left-side power measurement. - Right crankarm and spider NOT included. - Available in 170-175mm crankarm lengths.
Specialized S-Works Carbon Road Crank Arms
$425.00
Light and strong, these Specialized S-Works carbon road arms, and spider give you the competitive advantage. - Light and strong, these S-Works carbon road arms give you the competitive advantage. - Hollow carbon crank arms offer superior stiffness. - Oversized alloy spindle with Hirth coupling interface. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell. - BB30 compatible. - Compatible with Shimano and SRAM drivetrains. - Finish: Unidirectional carbon fiber - Spider: 110BCD
Speedplay SYZR
$165.00 - $420.00
Syzr Pedal Systems transfer power more efficiently to your off-road rig. Rider power is delivered to Syzr pedals directly through the cleats, not through the spongy rubber lugs of the shoe sole. Direct, Through-the-Cleat Power Transfer ensures that no rider energy is lost during transmission. SYZR pedals also use Active Cleat Stabilization Technology to improve the precision of the pedal/cleat connection and eliminate the slop and lateral instability common to off-road pedals. With advanced Roller-Cam Release Technology, Speedplay ensures consistent release in wet or muddy conditions. Instead of the usual metal-to-metal connection that allows other pedals and cleats to seize during release, Syzr cleats feature Ceramic Roller-Cams that do not seize when wet because they roll. In addition to improving consistency of release, the ceramic contacts provide exceptional, long-term durability.
Shimano XTR Hollowtech II M9100-1 Crank Arms
$419.99
Shimano XTR M9100 cranks feature a lightweight and rigid design thanks to Hollowtech II crank construction. Chainrings can be easily exchanged with the direct mount system and one key release. - Single front chainring set up (chainring not included) - Gear tooth profile designed for MTB riding usage - Crank can be exchanged between single and double front chainring set ups - 162mm Q-Factor
Shimano XTR Hollowtech II M9120-1 Crank Arms
$419.99
Shimano XTR M9100 cranks feature a lightweight and rigid design thanks to Hollowtech II crank construction. Chainrings can be easily exchanged with the direct mount system and one key release. - Single front chainring set up (chainring not included) - Gear tooth profile designed for MTB riding usage - Crank can be exchanged between single and double front chainring set ups - 168mm Q-Factor
Shimano Dura-Ace 9160 Di2 Dual Control TT Bar-End Shift/Brake Levers
$198.99 - $413.99
- Slimmer, More Aerodynamic Shape And Improved Grip Feel - Optimum Power Transmitted With Firm Grip - More Control And Confidence In Race Condition - Improved Shift Switch Placement For Operation Without Removing Hands From The Bars - Intuitive Shifting Control - Single Button On Each Side Of The Shift Lever Designed To Work With Synchro Shift               - Each Switch Available With Multi-Shift On/Off - Increased E-Tube Project Customization - Each Switch Has The Option For Multi-Shift - Customizable Function To Fit Any Riding Style - Integrated E-Tube Cable And Internal Brake Cable Routing For Enhanced Cockpit Aesthetic And Aerodynamics 
Shimano Dura-Ace 9150 Di2 Braze-On Front Derailleur
$409.99
- Ergonomic Shifting Operation Without Stress - Shimano Synchronized Shift - Race Endurance For Less Damage In Crush - Quick And Smooth Front Shifting "Under" High Pedaling Torque - Maintains Compact And Smooth Appearance - Top Gear Teeth: 46-55T - Chain Stay Angle: 61-66° - Chain Line: 43.5mm
Shimano XTR Down Swing Front Derailleur Di2
$409.99
- More powerful shifting (+25% compared to M9000) - Reliable gear changes under load - Computer controlled auto trim - Optimized Di2 cage profile and gear tracking - Shimano Synchronized Shift compatible - Manual control avaiable (2nd shifter required) - System communication with rear derailleur - Advantage in all conditions - Modular mounting structure (adapters optional)
Shimano XTR Hollowtech II Race Crankset
$405.99
Shimano's heralded XTR moniker promises genre-defining performance, weight, and style. Shimano's XTR Hollowtech II Race Crankset lives up to the name. The hollow, cold-forged aluminum crankarms are ultra light, yet exceptionally stiff for awesome power transfer and efficiency. XTR chainrings feature computer-designed shift ramps for remarkably fast, clean, and precise front shifting. CloseStep gear combos allow riders to tailor the chainring combos to suit their riding needs.
Shimano XTR Hollowtech II Trail Crankset
$405.99
Shimano's heralded XTR moniker promises genre-defining performance, weight, and style. Shimano's XTR Hollowtech II Trail Crankset lives up to the name. The hollow, cold-forged aluminum crankarms are ultra light, yet exceptionally stiff for awesome power transfer and efficiency. XTR chainrings feature computer-designed shift ramps for remarkably fast, clean, and precise front shifting. CloseStep gear combos allow riders to tailor the chainring combos to suit their riding needs.
Specialized Chisel Carbon Fatboy Rigid Fork
$400.00
Lighten the mood with Specialized's Chisel Carbon Fatboy Rigid Fork. The uni-directional full carbon monocoque structure with carbon legs, crown, and steerer is featherweight. It's got a 160mm post mount for brakes, an integrated aluminum crown race, and aluminum dropouts that are compatible with 135mm hub and SBC OS28 end-caps for increased stiffness.
Specialized S-Works Carbon Mountain Crank Arms
$400.00
Sporting a supreme strength-to-weight ratio, Specialized's S-Works Carbon Mountain Crank Arms are super stiff and ready to propel you up the trails. With a self-extracting bolt for easy maintenance, these fourth-generation hollow crank arms feature an oversized aluminum spindle with a spline interface. It fits all frames with 73mm bottom bracket shell and includes all hardware for Pressfit 30.
Specialized S-Works Carbon Road Crank Arms
$400.00
Sporting a supreme strength-to-weight ratio, Specialized's S-Works Carbon Road Crank Arms are super stiff and ready to propel you up the climbs. With a self-extracting bolt for easy maintenance, these hollow crank arms feature an oversized aluminum spindle with a Hirth coupling interface and a unidirectional carbon fiber finish. They fit Specialized road frames with an OSBB or Pressfit 30 bottom bracket shell. - Light and strong, these S-Works carbon road arms give you the competitive advantage. - Hollow carbon crank arms offer superior stiffness. - Oversized alloy spindle with Hirth coupling interface. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell. - BB30 compatible. - Compatible with Shimano and SRAM drivetrains. - Finish: Unidirectional carbon fiber - Spider: 110BCD
Pro Vibe Aero Carbon Handlebar
$399.99
The Pro Vibe Aero handlebar is built to meet cycling’s highest demands using state of the art technology. It's an ultra-high performance handlebar constructed with Innegra fibers to ride the most punishing conditions and is designed with aerofoil shapes to give you a performance edge on the road. The Vibe Aero is developed with Di2 in mind offering ultimate integration for maximum aerodynamic performance and ultra-clean styling. - Full UD Carbon aerodynamic design that meets UCI requirements - Integrated brake, shift, and Di2 cable routing
Shimano XTR 12-Speed Cassette
$389.99
- MODEL NO: CS-M9100-12 - SERIES: XTR M9100 Series - Average weight: 357g (10-45T), 367g (10-51T) - Combination: 10-12-14-16-18-21-24-28-32-36-40-45T, 10-12-14-16-18-21-24-28-33-39-45-51T - Combination name (Group name): 10-45T, 10-51T - Compatible chain: CN-M9100 - Speeds: 12-speed - Spider arm QTY (pcs): 1 - Type: HYPERGLIDE
Shimano Dura-Ace 9100 Dual-Pivot Brake Caliper
$189.99 - $380.00
- The Best Balance Between Rigidity, Weight And Stopping Power - More Predictable, Linear Braking Curve - Clear Contact Feeling With Better Linearity - Stabilizer Added Between Axles Work - Sleek Design - Less Gap Between Each Arms - Comfortable Riding With Wider Tire On Rough Road - Better Clearance With Wider Tire - Compatible With 28C Tire Size
Pro Vibe Compact Carbon Handlebar
$379.99
An ultra-high performance handlebar constructed with Innegra fibers to ride the most punishing conditions. The PRO Vibe handlebar is built to meet cycling’s highest demands using state of the art technology. The Vibe is developed with Di2 in mind offering ultimate integration for maximum aerodynamic performance and ultra-clean styling. The carbon PRO Vibe handlebar series is constructed from high-performance Innegra fiber. The addition of Innegra fibers strengthens the bar’s most vulnerable areas without compromising its weight, so your handlebar is ready to ride the harshest conditions. - UD carbon construction - Integrated brake and shift cable routing (Also for Shimano Di2) - Anatomic and compact design
Shimano DXR Crankset
$379.99
In BMX racing, that first sprint from the gate is the most important part of the race. Shimano knows this, so their DXR cranks are unbelievably stiff, perfect for getting out in front for the holeshot. They borrow Hollowtech II technology from the Saint downhill cranks to make them rigid, light and super tough. They sport a narrow Q factor for smooth pedaling and steel pedal inserts for durability. When 2nd place just won't do, DXR is the answer.
Specialized Command Post IRCC
$350.00
Specialized's Command Post IRCC, offers Cruiser Control technology. With ten micro-adjust positions, you'll always be able to find just the right saddle height for descending like Gwin or climbing like Sauser. - Patented mechanical locking system with the addition of Cruiser Control Technology. - Cruiser Control technology features added positions in the cruiser control range. - Bonded lightweight aluminum micro-adjustable “alien” style head. - Dual-keyway system eliminates saddle wiggle. - Energized triple-lip wiper prevents contamination. - Durable zero-gap, dual-lip x-ring internal seal ensures long-term durability. - Ships with SRL and grip mounted lever.
Shimano Ultegra R8000 Dual Control Levers
$167.99 - $349.99
Shimano Ultegra R8000 dual control levers. - Greater reach adjust range - Quick and intuitive rear shifting operation with redesigned internal shifting unit - Even lighter front shifting when paired with redesigned FD-R8000 - 2x11-speed - Model Number: ST-R8000 - Series: Ultegra - Shift Cable Casing: OT-SP41 - Shift Cable: Polymer coated - Average Weight: 220 grams
Shimano Ultegra R8060 TT/Triathlon Dual Control Lever
$170.99 - $347.99
Shimano Ultegra TT/Triathlon dual control lever. - Reduced drag through a more aerodynamic design - Eliminated the switch box of ST-6871 to make the design smaller and shorter - Intuitive shifting control - Keep firm when shifting - Single button on each side of the shift lever only works with Synchronized Shift - 2x11-speed - Average Weight: 138 g/pair
Shimano Dura-Ace 9000 Outer Chainring
$344.00
Shimano Dura-Ace 9000 11-Speed Chainrings. - Chainring BCD: 110 Shimano Asymmetric - Color: Silver/Black - Defined Color: Silver - Drivetrain Speeds: 11 - Material: Aluminum - Ring Position/Type: Outer
Shimano Ultegra R8050 Di2/Mechanical Dual Control Levers
$163.99 - $337.99
Shimano R8050 Di2 dual control lever. - More intuitive shifting operation - Updated features and more defined click feeling - Clearer separation between shift buttons support quick and precise shifting while operating with thick gloves - Customizable functionality to match the rider's style - Each switch has the option for multi-shift ON or OFF - E-TUBE PROJECT - Programmable function of ST top button remote switch for third party cycle computer and shifting - More Reach Adjust range - 2x11-speed - Average Weight: 148 grams
Shimano Dura-Ace R9180 TT/Triathalon Hydraulic Disc Brake Dual Control Lever
$334.99
TT/Triathlon Hydraulic Disc Brake Dual Control Lever (2x11-speed). Features - Optimum power transmitted with grip firmly - Switch button integrated inside without hand release - Intuitive shifting control - Single button on each side of the shift lever only works with Synchro Shift - Each switch available with multi-shift on/off - More control and confidence in race condition - Optimally balanced hydraulic brake system for racing - Customizable the function to fit in rider's riding style - E-TUBE project - Clean cockpit area - Integrated E-TUBE cable and internal brake cable routing - New cable junction (EW-RS910/911, EW-JC130) available to integrated with bike frame
Shimano Deore XT M8050-GS Di2 Shadow Plus Rear Derailleur
$319.99
Shimano Deore XT RD-M8050 Di2 Rear Derailleur - Accurate and stable shifting in any condition - Instant response - Customized shift speed within Multi-shift - Powerful shifting - Seamless gear change even under high load - Smart and efficient gear selection with Shimano Synchro Shift - Single lever operation - Rider-programmable shift mapping - Drivetrain Speeds: 11 - Maximum Sprocket: 42T(2x11-speed)/46T(1x11-speed) - Minimum Sprocket: 11T - Front Difference: 10T - Total Capacity: 35T - Average Weight: 320 grams
SRAM RED 11-speed Rear Derailleur
$291.00 - $310.00
It takes a degree of passion for the sport that can’t be faked to fully appreciate SRAM RED. It was created to blur the boundaries between machine and athlete. The SRAM RED rear derailleur was designed with Exact Actuation technology for precise, efficient shifting. Carbon fiber, titanium, and ceramic bearings complete the spec. The result adds to its legacy as the heart of the purest groupset for the pursuit of cycling excellence. - SRAM 11-speed compatible - WiFLi option - Carbon cages, carbon inner links, titanium hardware - Exact Actuation shifting provides fast and accurate shifts - Silent shifting with optimized AeroGlide pulleys, ceramic bearings - Spring-fixed barrel adjuster - Chain pulley cage adds precise chain management - Titanium pinch bolt keeps a low profile while minimizing weight - Speeds: 11 - Material: Carbon cages, Carbon inner links, Aero designed titanium hardware - Weight: 145 grams short cage), 165 grams (mid cage) - Compatibility: SRAM RED & Force Rear Shift-Brake levers, SRAM R2C Aero SL-1190 shifters, - SRAM R2C Aero SL-1150 shifters, SRAM 900 Aero brake levers, SRAM 500 Aero brake levers - Finish: Falcon grey & black anodized - Tech Highlights: AeroGlide Pulleys, Exact Actuation - Largest Cog (teeth): 28 (short cage) 32 (WiFli Medium Cage)
Shimano Saint Crankset
$297.99 - $309.99
Big air, pure speed and total concentration: the DH world in a nutshell. It's a world where line choices are made in the blink of an eye, absolute faith in your gear is a must, and Shimano's Saint Crankset is ready to answer the call every time. Ultra-wide bottom bracket bearing spacing and hollow-forged crank arms are used for maximum rigidity and strength under demanding conditions, and a steel pedal insert adds even more burl. A single chainring keeps things simple and durable up front so you can focus on the ride, and not a dropped chain. See you at the bottom.
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