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Parts and Components

Full Parts and Components Catalog Available from Tread Bike Shop

SRAM Red eTAP Electric Road Kit
$1,764.00
Step up to the next generation in shifting with SRAM's wireless RED eTAP electric road drivetrain kit. Each kit contains: - SRAM RED eTAP shift/brake levers - SRAM RED eTAP wireless front and rear derailleurs - SRAM eTAP batteries - Battery charger - USB stick - Quick-start guide
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
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 R9180 TT/Triathalon Hydraulic Disc Brake Dual Control Lever
$334.99 - $743.99
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
Pro Stealth Evo Stem/Bar Combo - Anatomic
$699.99
- Fully integrated UD Carbon stem-handlebar combination - Integrated Dual Cable Routing - Sizes: 40, 42 and 44cm (C/C) - Extensions: 90-130mm - Angle: -8 degree - Suitable for 1-1/8" forks - Color: UD Carbon - Weight: from 410g
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
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 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.
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 XTR Hollowtech II Trail Crankset
$405.99 - $601.99
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.
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 Boost Crankset
$592.99
- HOLLOWTECH II Crankset (2x11-speed) Trail Ride Specific HOLLOWTECH II crank arm. Cold Forged aluminum for strength and durability. Interchangeable with all of the new XTR Chainrings - Standard Q-factor (168mm) - HOLLOWGLIDE. Hollow gear construction optimized rigidity, lightweight and durability - Durable teeth. Titanium (2x11/3x11), Stainless steel (single) - Wt: 656g (40-30-22T, w/o BB), 630g (34-24T, w/o BB), 583g (30T, w/o BB) - Model Number : FC-M9020-B2 - Series : XTR - Crank Construction : HOLLOWTECH II Technology - Cassette Compatibility : 11 - Crank Arm Length : 170 / 175 - Bottom Bracket : SM-BB93 / SM-BB94-41A - Chain Line : 51.8mm - BB Shell Width : 68 / 73
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
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 XTR Hollowtech II Race Crankset
$405.99 - $577.99
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 STEPS CITY E6000 Rear Carrier Battery
$569.99
- BT-E6000(battery) / SM-BNE60 (battery mount) - Consistent performance, minimally affected by weather and temperature - Long life design, greater than 1,000 charge cycles - BT-E6000 features integrated sense of design with carrier
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.
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.
Shimano Dura-Ace 9170 Di2 11-Speed Dual Control Levers w/Hydraulic Brakes
$448.99
- 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 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 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
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