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.

Shimano Acera FC-M361 cranksets feature sturdy construction, reliable shifting, and replaceable chainrings. - Spindle Interface type: Square Taper JIS

Shimano's new FC-RX810-2 crank balances weight and efficiency for mixed-terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. The 2x11-speed crank is available in a 48-31T, 40T, and 42T chainring combination and 170, 172.5, and 175mm crank arm lengths. - Gravel gear ratios preserve riding rhythm over rough surfaces with wider tires - Optimum gearing for mixed terrains and riding styles - Wide-range double - Gear combinations: 48-31T, 40T, 42T

Shimano's Tiagra Front Chainwheel is sleek, balanced and consistent. The Tiagra 4700 series provides serious entry-level riding performance with trickle-down technology from the top shelf Dura Ace line. - Series: Tiagra 4700 - Crank Construction: 2-piece crank construction - Cassette Compatibility: 10-speed - Chain Compatibility: Series color - Bottom Bracket: BB-RS500 / BB-RS500-PB

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

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 Omega Megaexo Crankset is where fashion meets function, combining sleek styling with robust industrial design elements. Updated 11-speed compatibility puts the latest shifting technology into an attractive price conscious crankset. - Die cast aluminum crank arms - Chromoly chainring bolts - Fits Shimano and SRAM 10-11 speed systems - Integrated MegaExo 19mm BB

The Legacy crank uses a super tough 2-1/2 piece construction, a larger 22mm spindle and square shaped chromoly arms to maximize strength. WeThePeople toughened up areas like the pedal boss with its own investment cast gusset, to beef things up. - Designed for use with a 22mm Mid Bottom Bracket (not included) - Full seamless Japanese 4130 chromoly tubing, liquid post heat-treated - Grind-friendly, square-shape arms - RSD/LSD compatible

The Vuelta Corsa Comp Crankset is lightweight, reliable, and proven on the road. Look good, feel confident, and go fast! - Designed for indexed shifting - Fits square taper 110mm bottom bracket - Cold-forged alloy crank arms - Available in 170 or 175mm

The Vuelta Corsa Pro Crankset is lightweight, reliable, and proven on the road. Look good, feel confident, and go fast! - 130mm BCD steel chainrings - Designed for indexed shifting - Fits square taper 113mm bottom brackets - Cold-forged alloy crank arms - Available in 170 or 175mm

- Forged 7075 aluminum for durability and weight - 3/32" chain compatible - 46T aluminum chainring included - *Use with 107 or 110mm JIS Square Taper BB

The Vuelta Pista Track Crankset is lightweight, reliable, and proven on the track. Look good, feel confident and go fast! - 144mm BCD - 1/2"x3/32" alloy chainring - 46T gearing - Fits square taper, 108mm bottom bracket - Cold-forged alloy crank arms - Available in 165 and 170mm lengths

Back in the day, we drilled holes in our chainrings to make them lighter. The weight savings were minimal, but they sure looked cool. Velo Orange's Drillium Crankset recaptures the look. It's based on their Grand Cru 110 cranks with a very low 150mm Q-factor. And, while it may look like a vintage crank, the Drillium is cold forged in modern high-strength alloy. The 7075 alloy chainrings are highly durable, featuring ramps and pins for fast and smooth shifting with 6-10 speed drivetrains. The crank arms have classically styled reliefs, and the alloy dust caps function as self extractors with the supplied crank bolts. - Spindle interface: square taper JIS - BCD: 110mm - Weight: 645g

With their New Rando crankset, Velo Orange meets the demand for the classic 50.4 BCD crank still sought after in randonneuring and touring circles around the world. New Rando is modeled after classic 50.4 BCD cranks but with modern touches to improve performance. These include ramped and pinned chainrings that are thicker for less flex, stainless steel hardware, and forged 7075 aluminum arms. Get the classic style and versatility you want with the modern performance you've come to expect. - Spindle interface: Square Taper JIS - Weight: 540g

The Descendant 6K DUB crankset delivers consistent performance every time out. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. Optimized 6000 series forged aluminum arms support the X-SYNC 2 chainring to provide complete chain control. Now everyone can benefit from a new measure of durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Optimized 6000 series forged aluminum arms - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately BB Included: No Chainring BCD: SRAM Direct Mount Crank Intended Use: Mountain Number of Chainrings: Single Drivetrain Speeds: 12, 11, 10 Spindle Interface Type: SRAM DUB Chainline/Hub Compatibility: 135/142 MTB Hubs

The Descendant 6K DUB crankset delivers consistent performance every time out. Now featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. Optimized 6000 series forged aluminum arms support the X-SYNC 2 chainring to provide complete chain control. Now everyone can benefit from a new measure of durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Optimized 6000 series forged aluminum arms - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Boost Compatible - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 141/148 Boost Hubs

The Descendant 7K crankset delivers consistent performance every ride. Featuring SRAM's X-SYNC2 tooth profile chainring, the Descendant crankset is engineered for complete chain control. Each tooth's thickness is precisely toleranced and controlled to work seamlessly with SRAM chain's inner and outer links. SRAM DUB technology features a better-engineered bottom bracket and a new spindle design. Together, these allow for a more uniform approach to bottom bracket fitment, better sealing against contamination and forward and backward compatibility. Now everyone can benefit from a new measure of durability. - The Descendant 7K crankset is compatible with the SRAM Eagle drivetrain system - Featuring SRAM’s X-SYNC2 tooth profile - Optimized 7000 series forged aluminum arms - SRAM DUB technology features a uniform approach to bottom bracket fitment, better sealing against contamination and is forward and backward compatible - Direct Mount ring - ISO 4210 compliant - 12-Speed, 56.5mm chainline - DUB bottom bracket sold separately

The svelte strength of carbon fiber with the swagger of heavy metal. The Descendant Carbon DUB crankset uses a proprietary TruVativ carbon construction process, delivering a crankset light enough for XC, yet durable enough for Enduro. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility, and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Carbon construction for lightweight durability - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 141/148 Boost Hubs

The svelte strength of carbon fiber with the swagger of heavy metal. The Descendant Carbon DUB crankset uses a proprietary TruVativ carbon construction process, delivering a crankset light enough for XC, yet durable enough for Enduro. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Carbon construction for lightweight durability - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 135/142 MTB Hubs

TruVativ's Descendant is a downhill bike specific crankset with amazingly strong forged 7050 aluminium arms. At just 822 grams, this remarkably tough package brings ultimate performance to everyone from freeride shuttlers, to slopestyle riders, to hard-charging gravity racers. Plus, the GXP bottom bracket with Gutter Seal Technology keeps out mud and dust.

Whether your target is high speed or big air, an unwavering focus on dependability and style can never be overlooked. Blending the experience of countless DH podiums, big mountain competitions and film sessions, the new Descendant DH crank brings clock-beating weight savings to freeride burliness—at a price that will leave money for the next adventure. Meet your gravity goals—Descendant. - Arm Material: Aluminum - Chainring Material: Aluminum - Available Arm Lengths: 165mm, 170mm - Compatibility: Any 1x drivetrain - Colors: Black - BCD: 94mm - Bottom Bracket: GXP 83mm/PF GXP 104.5/107mm, PF30 83mm - Chainrings: 34T X-SYNC - Interface: 24mm, 30mm - Chainline: 57.0mm

Truvativ's Firex 3.3 is a three-ring crankset for 9-speed drivetrains, perfect for upgrading your bike or replacing an old or damaged crankset. Aluminium chainrings are light and stiff, plus the anodized hard coating gives the rings smooth shifting and added longevity.

The STYLO 6K DUB crankset delivers consistent performance every time out. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. 6000 series forged aluminum arms support the X-SYNC 2 chainring to provide complete chain control. Now everyone can benefit from a new measure of durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - 6003 series forged aluminum arms - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 135/142 MTB Hubs

The STYLO 6K DUB crankset delivers consistent performance every time out. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. 6000-series forged aluminum arms support the X-SYNC 2 chainring to provide complete chain control. Now everyone can benefit from a new measure of durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - 6003 series forged aluminum arms - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Boost Compatible - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 141/148 Boost Hubs

The STYLO Carbon Fat Bike DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility, and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fat bike frame compatible - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 170/177 Hubs

The STYLO Carbon Fat Bike DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility, and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fat bike frame compatible - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 190/197 Hubs

The STYLO Carbon DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the new STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: Sram Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 141/148 Boost Hubs

The STYLO Carbon DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the new STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability - Chainring is designed specifically for Eagle chains and drivetrains - DUB compatible bottom bracket sold separately - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: Sram Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 135/142 MTB Hubs

Surly designed the O.D. crankset to offer frame and tire clearance while maintaining a reasonable q-factor (pedal stance). Maximizing the distance between the chain and the tire is important on fat bikes such as the Pugsley and Moonlander, or if you're running really big tires and rims on some other bike (like our new Krampus, for example). With normal cranks, wide tires on wide rims can rub the chain when in the lowest, or farthest-inboard, gear combinations. Like the MWOD crank, the O.D. crank doesn't just add a longer spindle to move the rings outboard. Rather, it does away with the big ring of a standard triple and moves the middle and granny rings to the outer and middle positions. This effectively moves the rings outboard without moving the arms outboard too. The O.D. is a simple, dedicated version of this idea. Neato! Forged of 7000 series T6 aluminum, the O.D. crank is a 2-piece, with spindle embedded inextricably in the drive side arm. It's a dedicated 2x, although its chainline is outboard a bit compared to standard mountain cranks, and it is 9 and 10 speed compatible. The 132mm, PF41 bottom bracket O.D. crank is what goes on the Ice Cream Truck bikes, so if you've got that setup, that's your crank. Surly also offers 33t and 20t rings separately. These chain rings are designed to shift best in specific combinations….change to a 39/22t, for example, and your shifting will suffer. The bearings on which they spin are also worth mentioning: Surly upgraded the bearings on these and the Mr. Whirly and MWOD cranksets to aftermarket Enduro bearings with double labyrinth seals, meaning they actively shed and stay clean of dust, muck, and grime, even in wet and muddy climates.

- 8-speed Road crankset - Square taper interface - Does not include BB - Bolt pattern: 110 x 5-bolt - Crank length: 170mm