Parts

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shift/Hydraulic Disc Brake Levers with SJ hose connected - Rear Derailleur & battery - 160mm CLX Rotors - Charger/cord - Quick Start Guide

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shift/Hydraulic Disc Brake Levers - 2 Piece Calipers - Front Derailleur & battery - Rear Derailleur & battery - 160mm CLX Ti 6Bolt Rotors - Charger/cord - Quick Start Guide

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shift/Hydraulic Disc Brake Levers with SJ hose connected - Front Derailleur & battery - Rear Derailleur & battery - 160mm CLX Rotors - Charger/cord - Quick Start Guide

Without wires or cables, SRAM designed a simpler way to shift with the nearly flawless RED eTap, and now, the intuitive simplicity of the eTap system is available with the added performance of hydraulic road disc brakes (HRD). The SRAM RED eTap HRD shift-brake control offers the world’s first wireless drivetrain with SRAM's most advanced HRD platform yet, HydroHC. Simpler shifting, better braking—all in the name of true advancement. - Easy to install on any frame; compatible with all SRAM road 22 speed cranks, cassettes and chains. - Includes two 160mm Centerline two-piece six-bolt rotors In the Box: - Red eTap Front Derailleur w/ Battery - Red eTap Rear Derailleur w/ Battery - Red eTap HRD Right Shifter with Caliper - Red eTap HRD Left Shifter with Caliper - eTap Battery Charger and Power Cord - USB Stick and QuickStart Guide

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shift/Hydraulic Disc Brake Levers with 2 Piece Caliper - Rear Derailleur & battery - 160mm CLX Ti 6B Rotors - Charger/cord - Quick Start Guide

You asked. We listened. eTap is now available for Force. SRAM Force eTap AXS offers the key features of RED eTap AXS—modern gearing, advanced chain management, and easy personalization—in a more affordable package. Exploring new limits has never been easier. SRAM Force eTap AXS—Simply Beyond. - Shifters/Hydraulic Disc Brake - Rear Derailleur & battery - Front Derailleur & battery (if 2x option is selected) - 160 Rotors CLX Ti 6Bolt - Charger/cord & QuickStart Guide

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shifters - Front Derailleur and battery - Rear Derailleur and battery - Charger and cord - Quick Start Guide

XX1 Eagle AXS utilizes the proven backbone of SRAM 1x. With the lightest weight materials and a 500-percent gear range and a more secure and longer wearing X-SYNC2 chainring, it's the pinnacle of performance. XX1 Eagle AXS: Ready for the new generation of XC super bikes. Eagle is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact. Groupset includes: - DUB BOOST Crankset w/ Direct Mount 34T chainring - Rear Derailleur w/ Battery - Shifter w/ Clamp - Rainbow Chain 126 links - XG-1299 Cassette 10-50T - Charger, Cord - Chaingap Gauge

XX1 Eagle AXS utilizes the proven backbone of SRAM 1x. With the lightest weight materials and a 500-percent gear range and a more secure and longer wearing X-SYNC2 chainring, it's the pinnacle of performance. XX1 Eagle AXS: Ready for the new generation of XC super bikes. Eagle is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact. Groupset includes: - DUB Crankset w/ Direct Mount 34T chainring - Rear Derailleur w/ Battery - Shifter w/ Clamp - Rainbow Chain 126 links - XG-1299 Cassette 10-50T - Charger, Cord - Chaingap Gauge

X01 Eagle AXS utilizes the proven backbone of SRAM 1x. With a 500-percent gear range, more secure and longer-wearing X-SYNC2 chainrings, and the resilience of an aluminum cage paired with the connected components of Eagle AXS, X01 Eagle is ready for the new generation of Enduro super bikes. Eagle is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact. Upgrade kit includes: - Crankset DUB BOOST w/ Direct Mount 32T chainring - Rear Derailleur with Battery - Shifter with Clamp - Rainbow Chain 126 links - XG-1295 Cassette 10-50T - Charger/Cord - Chaingap Gauge

X01 Eagle AXS utilizes the proven backbone of SRAM 1x. With a 500-percent gear range, more secure and longer-wearing X-SYNC2 chainrings, and the resilience of an aluminum cage paired with the connected components of Eagle AXS, X01 Eagle is ready for the new generation of Enduro super bikes. Eagle is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact. Upgrade kit includes: - Crankset DUB w Direct Mount 32T chainring - Rear Derailleur with Battery - Shifter with Clamp - Rainbow Chain 126 links - XG-1295 Cassette 10-50T - Charger/Cord - Chaingap Gauge

The 40's GRIP2 damper delivers ultimate performance and control when the going gets rough. Equipped with the Variable Valve Control (VVC) high- and low-speed rebound adjuster, improved compression damping and less friction overall, the 40 is just as comfortable in the bike park as it is racing the World Cup circuit. "Factory" says it all. The best-of-the-best technology we have to offer is available in our Factory Series models with our buttery smooth, and ultra durable Genuine Kashima Coat. These products are World Cup proven. Buttery smooth Kashima's distinctive gold color is backed by its high performance attributes—properties that provide an exceptionally smooth feel and extreme durability. GRIP2 — Next-Generation Sealed Cartridge FIT Damper GRIP2 is our next-evolution sealed cartridge FIT system, our highest performing gravity-focused damper. The new damper shares its roots with the original GRIP architecture but has been seriously enhanced with all-new technology: 4-way adjustability, VVC high-speed rebound circuit, high-performance mid-valve, and overall friction-reducing treatments. EVOL — Air Transfer Port System Our EVOL linear spring curve gives forks and shocks plushness off the top, extra mid-stroke support, and more tunable bottom-out progression, allowing riders to tap into the ideal pairing of front and rear-end feel. FLOAT EVOL Air Spring EVOL technology from rear shocks is integrated into all FOX forks. EVOL increases negative air spring volume, specifically positioned and sized for optimum small bump sensitivity. - FIT GRIP2 damper with 4-way high- and low-speed compression and rebound damping - 27.5" wheel with 20mm Boost thru axle - FLOAT EVOL air spring - Air bleed system ensures consistent fork performance at any altitude - Factory Series models feature Genuine Kashima Coat

More than 20 years ago, BoXXer changed the DH world when it hit the scene. Featuring Charger 2.1 damper for unrivaled control between the tape. Ultra-low friction SKF wiper seals and race-proven Maxima Plush damping fluid all work overtime to reduce friction, noise, and provide lasting fork performance all the way to the finish corral. - Completely re-designed to reduce hand fatigue and fight unwanted friction, the Charger 2.1 damper increases confidence and control over every trail - Charger 2.1 RC2 damper featuring independent high- and low-speed compression adjust - Highly tunable DH-specific DebonAir spring offers a coil-like consistent feel throughout the travel - Ultra-low friction SKF wiper seals provide long-lasting fork performance and improve overall suspension feel - Maxima Plush damping fluid reduces friction and silences damper noise - Ultimate foil graphics package

You asked. We listened. eTap is now available for Force. SRAM Force eTap AXS offers the key features of RED eTap AXS—modern gearing, advanced chain management, and easy personalization—in a more affordable package. Exploring new limits has never been easier. SRAM Force eTap AXS—Simply Beyond. Upgrade kit includes: - Shifters - Front Derailleur and battery - Rear Derailleur and battery - Charger and cord - Quick Start Guide

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - Shifters - Rear Derailleur and battery - Charger and cord - Quick Start Guide

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

FSA’s Road PowerBox Carbon Crankset employs a P2M convertible spider design for multiple chainring options. FSA's hollow carbon arms and BB386EVO spindle mated together produce a very lightweight, extremely versatile power meter crankset available with a double chaining configuration. Software upgrades are available for even more features. - Hollow carbon arms with UD carbon finish - BB386EVO 30mm AL 7050 alloy spindle fits every frame (purchase BB separately) - AL7075 CNC chainrings - AL7075 Torx T-30 alloy chainring bolts - Fits Shimano and SRAM 10-11 speed systems - Spider-based power sensors provide total power output measurement of both legs, with Left & Right leg output analysis available with system upgrade - Bluetooth connectivity available with system upgrade - Battery life is approximately 300-400 hours - Easy-to-replace CR2450 battery

Road riders are going beyond where we’ve ever gone before. We’re going further and faster. And when the road stops, we keep going. One thing hasn’t changed: We want to push those boundaries without any distractions. So we made eTap AXS for today’s riders. The result: an intuitive, high-performance groupset that means you can focus on what’s most important—your ride. Exploring new limits has never been easier. SRAM RED eTap AXS—Simply Beyond. Upgrade kit includes: - 650mm Blips x2 - 650mm Clics x2 - Blip Box - Rear Derailleur and battery - Charger and cord - Quick Start Guide

Saving every dime for your bike park pass? Keep it in the bank, BoXXer Select is built on the same great chassis as BoXXer Ultimate and features the DH-specific DebonAir air spring. Race-proven Maxima Plush fluid and the Charger RC damper offer out-of-the-boXX performance with low-speed compression and rebound adjustment. - Charger RC damper featuring low-speed compression adjust - Highly tunable DH-specific DebonAir spring offers a coil-like consistent feel throughout the travel - Maxima Plush damping fluid reduces friction and silences damper noise

You asked. We listened. eTap is now available for Force. SRAM Force eTap AXS offers the key features of RED eTap AXS—modern gearing, advanced chain management, and easy personalization—in a more affordable package. Exploring new limits has never been easier. SRAM Force eTap AXS—Simply Beyond. Upgrade kit includes: - Shifters - Rear Derailleur and battery - Charger and cord - Quick Start Guide

In certain disciplines, the single-ring drivetrain reigns supreme. Championing simplicity, strength and durability, the SRAM RED 1 AXS power meter meets the demands of triathletes, time trialists and cyclocross racers. The power meter features improved aerodynamics thanks to direct mount aero chainrings with fully integrated power, and the tighter gearing range is perfect for racing and flatter terrains. - Single-ring drivetrain simplifies functionality - 48T and 50T variants have fully integrated power into a direct mount aero chainring - 36-46T variants have spider-based power - Chainrings can be easily changed without requiring recalibration of the power meter - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - DUB bottom bracket adds durability and simplicity - Non-aero chainrings can be installed with a single tool, making gearing changes a breeze - Bottom bracket not included - BB Compatibility: All SRAM Road DUB BBs - BB Spindle Interface: DUB - Chainring material: Aluminum - Crank arm material: Carbon - Power Meter Type: ANT+ and BLE

The SRAM RED AXS power meter breaks with tradition — and breaks through to new levels of performance. SRAM reengineered road gearing: reducing front chainring size and adding more range to the rear cassette. They also maintained a 13-tooth delta on all chainring pairs, ensuring precise shifting for any setup. This results in more useful gearing and better shifting across all configurations. These power meters are also designed with Quarq's premier DZero power measurement technology fully integrated into the crankset. Welcome to the pinnacle of the power meter. - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Integrated power measurement - Power meter is fully integrated into the chainring set for lighter weight - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Improved front shifting performance for crisp and accurate front shifts - Unique chainring shape results in a lighter weight, stiffer, more durable crankset - Integrated chainring design significantly reduces weight - DUB bottom bracket adds durability, simplicity and broad compatibility - Speeds: 12 - BB Compatibility: All SRAM Road DUB BBs - BB Spindle Interface: DUB - Chainring material: Aluminum - Crank arm material: Carbon - Power Meter Type: ANT+ and BLE - Bottom bracket not included

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

Every innovation in Quarq’s next-generation DZero platform is channeled into DFour: 10 years of Quarq advances in power meter technology, plus new features such as dual Bluetooth low energy and ANT+ wireless data transfer, revised circuitry, a new strain gauge design and the new Qalvin BLE app. The DFour91 is designed for Shimano’s Dura-Ace R9100 chainrings. It uses Quarq’s lightweight, sturdy ExogramTM carbon crank arms. GXP and BB30 versions work with every bottom bracket shell, including BBright and BB386EVO. - DFour is designed for Dura-Ace 9000 chainrings and compatible with Ultegra 6800 and 105 5800 chainrings - DFour91 is designed for Dura-Ace R9100 chainrings - Must be paired with a compatible SRAM bottom bracket - 8-bolt power meter owners can upgrade using a DFour or DFour91 power meter spider - Bluetooth low energy technology and ANT+ wireless data transfer - AxCad -- no cadence magnet required - 10K Temperature Compensation - Battery — CR2032, 200-hour battery life, change without tools - OmniCal — swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy — within 1.5%, measuring both legs - Chainrings and bottom bracket sold separately

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.

Introducing the Cane Creek Helm, a 7-way adjustable suspension fork optimized for 140mm to 170mm of travel. Born in the mountains of Western North Carolina, Helm is designed to conquer aggressive trail, enduro racing, and anything in between. By isolating each damping and air spring adjustment, the Helm has the ability to be tuned for all types of terrain and riding styles and gives the rider ultimate control of their suspension set-up. WEIGHT - 2070 grams DAMPING - High Speed Compression, Low Speed Compression, Low Speed Rebound ADJUSTMENTS - 7-way adjustable suspension fork - High speed compression - Low speed compression - Low speed rebound - Air volume adjust (8-position Internal indexed system) - Independent positive air spring - Independent negative air spring - Indexed travel adjust system SPRING - High volume positive and negative air springs STANCHION DIAMETER - 35mm TRAVEL - Positioned at 150mm, 160mm, or 170mm from factory Optimized for 140 - 170mm of travel TRAVEL ADJUSTMENTS - Internal, 10mm Increments (170mm down to 100mm) 2 Travel spacers included AXLE / SPACING / OFFSET - "D-Loc" 15mm thru axle system / 15mm x 110 BOOST spacing / 44mm

The road steepens, but instead of slowing down, you push harder on the pedals and fly up the hill as all of your power turns into speed thanks to your Campagnolo Super Record Ultra-Torque Crankset. It sports a unique, integrated titanium spindle design that joins the two sides of the crankset together via a toothed Hirth joint in the center. And for ultra-smooth pedaling, the crankset comes with ceramic bottom-bracket bearings that fit into outboard cups (sold separately). The aesthetically arresting design provides incredible stiffness, while Campagnolo's unified BCD (145/112mm) allows for all 3 chainring standards. Plus, the Super Record chainrings sport special pins and plating for fast, silent shifts and long life. - Chainrings included: Yes - Drivetrain speeds: 11 - Number of chainrings: Double - Spindle interface type: Campagnolo Ultra-Torque

The award-winning 36 with FIT GRIP2 4-way adjustable damper features patent-pending Variable Valve Control (VVC) high- and low-speed rebound adjuster, improved compression damping, and less friction overall. With all this and the legendary Fox feel, the 36 offers a level of performance and adjustability sought by today's riders. "Factory" says it all. The best-of-the-best technology we have to offer is available in our Factory Series models with our buttery smooth and ultra durable Genuine Kashima Coat. These products are World Cup proven. Buttery smooth Kashima's distinctive gold color is backed by its high performance attributes—properties that provide an exceptionally smooth feel and extreme durability. GRIP2 — Next-Generation Sealed Cartridge FIT Damper GRIP2 is our next-evolution sealed cartridge FIT system, our highest performing gravity-focused damper. The new damper shares its roots with the original GRIP architecture, but has been seriously enhanced with all-new technology: 4-way adjustability, VVC high-speed rebound circuit, high-performance mid-valve, and overall friction-reducing treatments. EVOL — Air Transfer Port System Our EVOL linear spring curve gives forks and shocks plushness off the top, extra mid-stroke support, and more tunable bottom-out progression, allowing riders to tap into the ideal pairing of front and rear-end feel. FLOAT EVOL Air Spring EVOL technology from rear shocks is integrated into all FOX forks. EVOL increases negative air spring volume, specifically positioned and sized for optimum small bump sensitivity.

No mountain bike fork has epitomized success more than SID. More major international race wins than any other fork. An unwavering dedication to lightweight, precision, performance, and speed. A fierce commitment to competition. From its dedicated, 100mm travel-specific chassis, damper and air spring, to its precise steering characteristics, and its every-gram-counts attitude — each element of SID's design is focused on winning. Because whether it's a gold medal on the line or simple bragging rights, SID's sole purpose is success. - Charger 2 Damper - Lockout control with low-speed compression adjuster - Includes Right OneLoc Remote

The crankset is the heart of your bicycle and where you’ll find the SRAM RED Quarq power meter. The sole job of the crankset is to convert the effort from both legs to forward motion. It is the perfect place to measure power. This power meter works for every discipline: Road, triathlon, time trial, and cyclo-cross. The chainrings are replaceable should your bike, discipline, or ability change. - A direct force power meter that measures total power output from both legs with +/-1.5% accuracy - Works for every discipline: Road, triathlon, time trial, and cyclo-cross - No compromises on materials, shifting, wheels, or pedal choice - Proven by pro teams and athletes throughout the world – Cobbled Classics, Giro d’Italia, Tour de France, Vuelta a España, World Championships - Number 1 at the Ironman World Championship for the last three years - Uses a hidden bolt to mount the chainrings – compatible SRAM chainrings ensure the derailment pin lines up behind the crank arm - 10K – programmed with over 10,000 data points to eliminate temperature effects on power measurement - AxCad – A multi-axis accelerometer switches the power meter on and measures cadence, simplifying installation and operation - Breakthrough Materials – Exogram hollow carbon fiber crank arms – the lightest, strongest crank arms SRAM makes – minimize weight and maximize speed [ELSA RS, ELSA R and SRAM RED] - Easy to use (and reuse) – LED indicator and visible ANT+ ID - The replaceable CR2032 battery never leaves you without power - Manual and automatic zeroing make it truly set and forget - Built to Last – IPX7 waterproof rating, 2-year warranty, free firmware updates, and acclaimed international support - Moves with you from bike to bike - With Quarq's free Qalvin app – available for Windows, Mac, iOS and Android – you can set the zero offset, check battery voltage, run diagnostics, and perform firmware updates for free Arm Material: Carbon arms, Machined alloy spider Weight: 778 grams (GXP 172.5mm 53x39 BB not included) * Chainrings and BB sold separately