Cranksets

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.

The Tourney TY501 crankset provides crisp, reliable shifting for your triple chainring drivetrain. - Precision indexed shifting - 8/7/6-speed compatible - 3 crank length specification available - Precise chain line control - Light and reliable shifting - Versatile performance - Wide compatibility with multiple components - Quick and precise assembly

- FC-TY501-2 double crankset for 7 and 8 speed drivetrains - Simpler and faster shifting than triple cranks - 46-30 gearing, ideal for gravel, adventure, commuting & light touring - 48.8mm chainline, designed for 135mm QR and 142mm thru-axle frames - Crank bolts included - Requires LL123 square taper bottom bracket

Shimano Altus M311 cranksets provide durability and reliable shifting for triple chainring drivetrains. - Hyperdrive SG-X chainrings - 7/8-speed compatible - Spindle interface type: Square Taper JIS

Kick your mountain biking into gear with the performance and durability of an Alivio MT210 crankset. - High-quality anodized finish - Precise and reliable shifting

- Non-series FC-MT210-2 / MT210-B2 double crankset for 2 x 9 speed drivetrains - Shimano's most affordable, outboard bearing Hollowtech II cranks - Simpler and faster shifting than triple cranks - 22-36 gearing, perfect for trail riding - Chainline: 48.8mm chainline (FC-MT210-2), for 135mm/142mm frames, or 51.8mm (FC-MT210-B2), for Boost 141mm/148mm frames - Aluminum crank arms - Highly durable riveted steel chainrings - Requires SM-BB52 bottom bracket, not included

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

- Material: Aluminum - Chain Compatibility: HG 7-8 speed - Pedal Spindle: 9/16'' - Bottom Bracket: Not included - BB-UN26 or BB-UN55 110mm for double or 113mm for triple - Alloy outer chainring

The Shimano FC-M371 crankset for square bottom brackets features a rigid 2-piece construction and Hyperdrive SG-X chainrings. - Chain guard included - 9-speed

The Shimano Alivio FC-T4010 crankset is an excellent replacement for your 9-speed triple chainring drivetrain. - Chainguard included - For Octalink V2 bottom brackets

Shimano Tourney FC-A073 crankset - 7/8-Speed compatible - SG-X Steel chainrings - Square taper JIS - Fixing bolts not included - Chainguard model

Claris R2000 series cranks are clean and stylish; an ideal option for long touring, town cruising, and daily commuting. - Hyperglide technology ensures smooth and reliable shifting - 4-gear arm crank design - Includes crank arm fixing bolt - 150mm Q-factor

Claris R2000 series cranks are clean and stylish; an ideal option for long touring, town cruising, and daily commuting. - Hyperglide technology ensures smooth and reliable shifting - 4-gear arm crank design - Includes crank arm fixing bolt

This 2-piece crankset with chain guard is perfect for city and commuter bikes. - Chainring: 45T, 42T, 39T - Single or double chainguard integrated design - Chain compatibility: Super Narrow HG for 9-speed, HG 8-speed (1/2 inch x 3/32 inch)

- 2-PIECE CRANKSET for 142 mm or 148 mm O.L.D. frames - DYNAMIC CHAIN ENGAGEMENT+ improves chain engagement and retention - Q-factor 172 mm - Direct mount chainring - Chain Line 52 mm - 1x12-speed

- 2-PIECE CRANKSET for 148 mm O.L.D. frames - DYNAMIC CHAIN ENGAGEMENT+ improves chain engagement and retention - Q-factor 178 mm - Direct mount chainring - Chain Line 55 mm - 1x12-speed

- 2-PIECE CRANKSET for 157 mm O.L.D. frames - DYNAMIC CHAIN ENGAGEMENT+ improves chain engagement and retention - Q-factor 181 mm - Direct mount chainring - Chain Line 56.5 mm - 1x12-speed

- Series: SORA - Crank Construction: 2-piece crank construction - Bottom Bracket: BB-RS500, BB-RS500-PB - Chain Line: 43.5 - 9-speed - Four-arm BCD

Shimano's Deore Crankset features efficiency and fast shifting to let you make the most out of the trails. The smooth shifting rhythm allows you to maintain speed and acceleration over challenging terrain. Hollowtech II technology provides the best balance of stiffness, strength, weight, and rotating performance. Features: - Efficient power transfer - HOLLOWTECH II crank arm with 4-arm construction - Composite chainring - Optimized gear combinations and ratios for trail riding - Close step tooth profile for smooth shifting - Stable shifting performance in any suspension position - Single spike structure for stable shifting - Bottom Bracket compatibility: SM-BB52/BB-MT500-PA - Chain Line: 51,8

Shimano's Deore Crankset features efficiency and fast shifting to let you make the most out of the trails. Its smooth shifting rhythm maintains speed and acceleration over challenging terrain and provides optimized gear combinations and ratios for trail riding. Features: - HOLLOWTECH II Crankset (3x10-speed) - Efficient power transfer - HOLLOWTECH II crank arm with 4-arm construction - Composite chainring - Close step tooth profile for smooth shifting - Bottom Bracket compatibility: SM-BB52/BB-MT500-PA - Chain Line: 50

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

- XT M8130 12 speed crankset - Fits 157mm SuperBoost MTB frames - Hollow forged crank maximizes power transfer while limiting weight - Direct mount chainring type - Q-factor : 181mm - Chainline : 56.5mm

The RS510 crankset features a 4-arm design that's light and stiff, providing high performance on a low budget. - For 11-speed drivetrains - Compatible with frames of O.L.D. 135 mm and 410 mm chainstay length - Affordable and high-end style crankset

The Shimano 105 double crankset balances weight and efficiency without sacrificing stiffness. It offers Rider Tuned performance with numerous gear combinations, and the wider gear pitch increases chain clearance with small gearings and allows for as short as 410mm chain stays. - Hollowtech II construction - 11-speed - 110mm Shimano Asymmetric BCD

An attractive aluminum crank with hollow arms for lightweight, rigidity, and durability The newly designed crank arms offer an optimized balance between lightweight and efficiency. The crank, formed with hollow aluminum technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are SHIMANO 105's unique structural design that achieves both thorough weight reduction and crisp shifting performance. FEATURES - Optimal balance of stiffness, strength, weight and rotational performance - HOLLOWTECH II structure cuts weight yet maintains strength for better power transfer - Crank arm length: 160, 165, 170, 172.5, 175 mm - Gear combination: 50-34T, 52-36T - Q-factor: 148 mm

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 Dura-Ace Left Crank Arm. - Spindle Interface Type: Hollowtech II

Shimano Ultegra R8000 crankset. - Optimized lightweight crank arm design produces excellent power transfer efficiency - Minimized weight without sacrificing stiffness - Hollowtech II - Rider tuned gear performance through various gear combinations - Possible to choose the best choice for ride - Redesigned FC for greater frame compatibility - Wider gear pitch increases clearance between chain and leading teeth to provide compatibility with frames with O.L.D. 135mm and 410mm chain stay length - Model Number : FC-R8000 - Series: Ultegra - Crank Construction: Hollowtech II - Crank Arm Length : 165, 170, 172.5, 175mm - Bottom Bracket : SM-BBR60/SM-BBR60-PB - Chain Line: 43.5 - Average Weight: 690 grams (53-39T), 681 grams (52-36T), 674 grams (50-34T), 668 grams (46-36T)

An integral part of the Shimano Ultegra 12-speed road lineup, the FC-R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements. - Optimal balance of stiffness, strength, weight and rotational performance - Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting - 148mm Q-factor - 44.5mm chainline

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

The Shimano Dura-Ace FC-R9200 crank performs two vital functions; transferring your pedaling effort into the drivetrain and ensuring the fastest, most precise front shifting available. With HOLLOWTECH II crank arms to ensure light weight and Shimano's class-leading chainring designs, the FC-R9200 won't let you down. - Optimal balance of stiffness, strength, weight and rotational performance - HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting - 148mm Q-factor - 44.5mm chainline

SRAM's S600 3.0 Crankset features forged arms for increased strength and reliability paired with smooth shifting chainrings for the best combination of looks, performance and price.

Lightweight, durable, stiff and designed specifically to work with Bosch and Brose mid-ship motors, X1 crankarms are purpose built for the high-torque E-MTB environment.

The SRAM SX Eagle Crankset includes Eagle platform styling and features at an entry-level price point. SX Eagle cranks are compatible with all levels with SRAM Eagle drivetrain systems. - Offers the same chain retention performance as seen in all higher-level Eagle drivetrain cranks - 32T direct mount X-SYNC 2 steel chainring included - Aluminum crank arms - 11/12-speed compatible - Bottom bracket sold separately

The SRAM SX Eagle Crankset includes Eagle platform styling and features at an entry-level price point. SX Eagle cranks are compatible with all levels with SRAM Eagle drivetrain systems. - Offers the same chain retention performance as seen in all higher-level Eagle drivetrain cranks - 32T direct mount X-SYNC 2 steel chainring included - Aluminum crank arms - 11/12-speed compatible - Bottom bracket sold separately

The SRAM NX crankset delivers Eagle styling and performance to the newest addition to the Eagle ecosystem. Designed for SRAM's X-SYNC 2 chainrings, the NX crankset is engineered for complete chain control—each tooth's profile is precisely engineered to work quietly, efficiently, and securely with the Eagle chain's inner and outer links. DUB technology features a better-engineered bottom bracket and a new spindle design, which together allows 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 performance and durability. - 6000 series forged aluminum arms - 52.0mm chainline

The SRAM NX crankset delivers Eagle styling and performance to the newest addition to the Eagle ecosystem. Designed for SRAM's X-SYNC 2 chainrings, the NX crankset is engineered for complete chain control—each tooth's profile is precisely engineered to work quietly, efficiently, and securely with the Eagle chain's inner and outer links. DUB technology features a better-engineered bottom bracket and a new spindle design, which together allows 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 performance and durability. - 6000 series forged aluminum arms - 49.0mm chainline

- Chainrings Included: Yes - Number of Chainrings: Single - Pedal Spindle: 9/16" - Rings: 42-tooth

The SRAM NX crankset delivers Eagle styling and performance to the newest addition to the Eagle ecosystem. Designed for SRAM's X-SYNC 2 chainrings, the NX crankset is engineered for complete chain control—each tooth's profile is precisely engineered to work quietly, efficiently, and securely with the Eagle chain's inner and outer links. DUB technology features a better-engineered bottom bracket and a new spindle design, which together allows 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 performance and durability. - 6000 series forged aluminum arms - 66.5mm chainline

Elegant and secure direct-mount X-SYNC chainrings from the company that originated the 1x drivetrain for the ultimate in consistent chain control over the long haul. - DUB bottom bracket adds durability and simplicity - Wide-chainline crankset to fit the biggest gravel tires - Longer DUB crank spindle accommodates both Road- and MTB-width bottom bracket standards for unmatched cross-compatibility across brands - Compatible with 135mm, 142mm, and BOOST rear spacing - BB not included

Designed to handle whatever you can throw at it. Aluminum crankarms in a wide range of lengths and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter what. A tight and consistent 13-tooth gap between chainrings makes for accurate and dependable shifting. - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Crisp and accurate front shifts - DUB bottom bracket adds durability, simplicity, and virtually universal frame compatibility - BB not included

SRAM's GX 2x10 Crankset w/All Mountain Chainguard delivers consistent performance every time out. Featuring SRAM’s X-GLIDE chainrings, the GX crankset is engineered for 2x10 shifting performance. Flawless shifting means you’ll never again compromise your speed and power in unpredictable off-road terrain. No more missed shifts. X-GLIDE puts you in the right gear, right now. - 6000 series AL - X-GLIDE 2x10 shifting technology • Weight: 799g (GXP, 175mm, 36/22T) • Chainguard included, but not shown

Some riders test their limits more than others. For these riders, the GX Eagle DUB crankset allows them to go all-in, every day they ride. The best aluminum crankset we make, engineered to deliver consistent performance every ride. Featuring our X-SYNC 2 tooth profile chainring for complete chain control, each tooth's thickness is toleranced and controlled to work seamlessly with the chain's inner and outer links. DUB technology's patented spindle design and bottom bracket provide a uniform approach to fitment, better sealing, and forward and backward compatibility. Simply put, the forged aluminum GX Eagle DUB crankset is the no-frills choice of riders who know. - Our best aluminum crankset - Direct mount interface compatible with chainrings across the entire Eagle Ecosystem - Master GX colorway as part of Eagle Colorsystem—pairs with all cassettes and chains, from Black to Gold to Rainbow to HardChrome and all-new Copper

Some riders test their limits more than others. For these riders, the GX Eagle DUB crankset allows them to go all in, every day they ride. The best aluminum crankset we make, engineered to deliver consistent performance every ride. Featuring our X-SYNC 2 tooth profile chainring for complete chain control, each tooth's thickness is toleranced and controlled to work seamlessly with the chain's inner and outer links. DUB technology's patented spindle design and bottom bracket provide a uniform approach to fitment, better sealing, and forward and backward compatibility. Simply put, the forged aluminum GX Eagle DUB crankset is the no-frills choice of riders who know. - Our best aluminum crankset - Direct mount interface compatible with chainrings across the entire Eagle Ecosystem - Master GX colorway as part of Eagle Colorsystem—pairs with all cassettes and chains, from Black to Gold to Rainbow to HardChrome and all-new Copper

The SRAM GX Eagle 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 7000-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 7000-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 - 56.5mm chainline

The X0 Eagle E-MTB crankset is all the durability you expect from X0 optimized for E-MTB. The eye-catching all-aluminum design utilizes a perfectly balanced stiffness-to-weight ratio. The X0 Eagle E-MTB Crankset and X0 Eagle Transmission (T-Type) direct mount chainring delivers premier shifting performance, reliable strength, and optional bolt-on guards to protect your ring in the roughest terrain. - All aluminum construction - Optimized stiffness to weight ratio

The SRAM GX Eagle DUB Fat Bike 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 7000-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 7000-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 - 66.5mm chainline

SRAM's S300 1.1 single-speed Crankset combines their stiff 7075-aluminum chainring with their lightweight 6061-aluminum forged arms. The high-profile teeth are compatible with 9- and 10-speed chains, and the stout spindle efficiently transfers your power. Plus, GXP bottom bracket cups are included.

Forget front derailleurs; SRAM's Rival 1 Crankset brings a game-changing upgrade in performance and reliability to cyclocross, road, and other 700c disciplines. It combines the durability, simplicity, and efficiency SRAM is know for on the road with their 1x mountain technology, X-Sync. - Single-ring drivetrain simplifies functionality - Forged aluminum with detachable spider: 42T and 52T X-Sync tall, square tooth design provides maximum control - Sharp, narrow tooth profile and rounded chamfer edges help manage a deflected chain - Mud-clearing recesses for the inner chain links and rollers - Weight: 799g (24mm spindle, 172.5mm, 42T, no BB)

SRAM's Rival 22 performs on par with more expensive cranksets, but at a bargain value. The crankarms are hollow and forged from 6066 aluminum for maximum strength with minimum weight. Because lightness is nothing without toughness, the Rival crankset proudly boasts SRAM's X Glide R chainrings that are specifically designed for use with the Yaw front derailleur. Durability and reliable shifting are your allies with Rival 22.

The SRAM Force AXS Crank Arm Assembly features carbon crank arms that are ready to pair with any SRAM AXS spider or integrated chainring, with or without power. - 8-bolt interface is compatible with power and non-power AXS spiders and integrated chainrings - Not compatible with SRAM's 3-bolt direct mount interface - Carbon fiber arms with natural carbon finish - Spider and chainrings sold separately - DUB spindle interface - Compatible with all SRAM Road DUB bottom brackets - Number of Chainrings: No Rings, No Spider Included - Crank Intended Use: Road - Pedal Spindle: 9/16" - Spindle Interface Type: SRAM DUB - Chainring BCD: Direct Mount SRAM - BB Included: No

The SRAM GX Eagle DUB Fat Bike 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 7000-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 7000-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 - 76.5mm chainline

The XX Eagle E-MTB Crank takes from its race-winning lineage and is optimized for E-MTB use. Carbon fiber engineered with a foam core to give both incredible strength and maximized stiffness under the high torque environment of E-MTB. Paired with the new XX Eagle Transmission (T-Type) direct mount chainring, performance and design aesthetic blend together to provide our most premium, performance driven crank arm. - Carbon with foam core provides light weight with maximized stiffness

Forget front derailleurs; SRAM's Force 1 Crankset brings a game-changing upgrade in performance and reliability to cyclocross, road, and other 700c disciplines. Force 1 combines the durability, simplicity and efficiency that SRAM is known for with their 1x mountain technology. - Single-ring drivetrain simplifies functionality - SRAM X-Sync: wide-tooth, narrow-tooth chainring technology provides maximum chain control - Chainrings available in 42, 50 (110 BCD), and 52 (130BCD) teeth to conquer every course from sand dunes to gravel-road assaults - Unidirectional carbon crank arm matched to a forged aluminum spider for lightweight and durability - Weight 679g-24mm, 172.5mm, 50T, no BB - Bottom bracket not included

SRAM's Force 22 Crankset uses unidirectional carbon arms with a forged aluminum spider and integrated bottom-bracket axle to ensure top-notch stiffness for awesome power transfer and exceptionally low weights. Experience phenomenal front shifting with SRAM's X Glide R chainrings that start out as 5mm-thick aluminum plates and then precision machined to eliminate all unessential material while retaining extreme stiffness. With so much great technology and 11-speed compatibility, they're a force to be reckoned with.

The SRAM carbon GX Eagle crankset delivers consistent performance every time out. Featuring SRAM's X-SYNC 2 tooth profile chainring, the Carbon GX crankset is engineered for complete chain control. Each tooth's thickness is precisely toleranced and controlled to work seamlessly with the chain's inner and outer links. 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 most advanced aluminum crankset SRAM has ever made, the X0 Eagle T-Type Wide crankset is utterly unique and simply striking. Bringing serious riders the exact sort of legitimate performance X0 stands for, courtesy of a ground-breaking all-aluminum design with a perfectly balanced stiffness to weight ratio. - Unique, ground-breaking design and one of the lightest aluminum cranksets on the market - All-aluminum design provides perfect stiffness to weight ratio - Includes X0 T-Type removable and replaceable 2-Guard aluminum bashguard to protect your chainring when riding rough terrain - 55mm Chainline - 174mm Q-factor - DUB bottom bracket and spacers NOT included

The X0 Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle provides riders with accurate, live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery with robustness in mind. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - Unique, groundbreaking design integrated with one of the lightest aluminum cranksets on the market - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant,integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - BB not included

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant,integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Wide chainline crankset for bikes with up to 700x45c or 27.5x2.1" tire widths (43/30T chainrings only) - BB not included