Cranksets

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

You'll always find the perfect gear with Shimano's Tiagra Crankset. It's crafted from aluminum for low weight and efficient power transfer, while the integrated axle furthers both of those attributes. It shifts positively as well with ramped and pinned SG-X chainrings that boost shifting speed and precision. Options: - Standard Double (52/39) - Compact Double (50/34) - Triple (50/39/30)

•Single speed crankset •Forged alloy crank arms •Square taper interface •Does not include BB •44-tooth chainring •Double chainring guard

Spacers to insure proper chainline and chainring spacing on your bike. • 0.6mm thick • Sold in a bag of 20 spacers

- SO-2995: hex-type steel crank fixing bolt set with integrated plastic dust cap

• 6061-T6 aluminum construction • Adapts 110 or 130 bcd 5-bolt chainrings to fit one-piece or three-piece single bolt cranks • Anodized finish • Made in the U.S.A.

- Track crank, also for use with internal gear hubs such as the Sturmey 3-speed fixed and 2-speed kickback - Forged 6061 aluminum crankarm/spider with square BB taper - Includes CNC machined, black anodized 7075 aluminum chainwheel (46T)

The EC90 SL crank arms utilize the RaceFace CINCH technology which allows for direct mount 1x rings as well as direct mount 2x spiders, providing industry-leading versatility and peloton-leading performance. - Hollow carbon construction paired with highest grade aluminum pedal insert and spindle - Bottom Bracket sold separately - CINCH removable spiders and direct mount rings utilize a 20-tooth ISIS BB tool for removal and installation - CINCH interface with road specific 30mm spindle - Road standard Q-Factor of 149mm; will fit every major road BB standard - Weight: 352g

Revamp the look of your single speed cranks with some new hardware. Origin-8's Single Chainring Bolts give a high polished look to any crankset. The anodized finish comes in multiple colors to highlight your crank and makes it look as good as you do. You can also choose between steel or aluminum bolts. • Set of 5 male/female bolts • Inside measures 4mm when tightened, 7mm total height

The 1x guide is the definitive cross-country chainguide. Used on the World Cup circuit and even in the 2012 London Olympics, the 1x has a proven track record of dependability and performance. The 1x is the perfect guide for riders and racers wanting a lightweight single-ring front drivetrain for cross-country use or riders wishing for more security out of their "narrow/wide" or XX1/X01 setups. Freshly updated for 2015 with the new co-molded "TR" upper guide - lighter and quieter, what's not to love? - Adds security to "narrow/wide" 1x10/11 and XX1/X01 drivetrains - Most models accommodate 26-38t chainrings - Tracked and grooved upper guide / backplate interface increases stiffness and eases installation - New co-molded "TR" upper guide with softer durometer interior for silent guidance - All install and adjustment operations possible with just a single 4mm HEX wrench. - Seat Tube mounted versions use first generation (V1) upper guides - CX model is only compatible with two-ring, road crank chainlines - BB mounted guides are only compatible with traditional, threaded BB systems

- Manufactured from UD Carbon with matte clearcoat - Handmade in Canada - SixC G2 Pedal Insert for increased Rally Factor - Burlier 7050 Spindle - Cinch technology for game-changing compatibility

Shimano's new FC-RX600-10 crankset balances weight and efficiency for mixed-terrain riding. Gearing options cater to the specific demands of gravel riding and to provide tighter gear steps for maintaining pedaling cadence. The 2x10-speed crank is available in a 46-30T chainring combination and 170, 172.5, and 175mm crank arm lengths. - Wider gear range for long tours or unknown terrain - Optimum gearing for mixed terrains and riding styles - Gear combination: 46-30T

Campagnolo's Potenza offers the same race-winning shifting performance as its carbon fiber counterparts seen atop professional riders' bikes. Only slight changes in the material used in its construction differentiates Potenza. Its 4-arm spider features a unified bolt pattern to make changing between compact and standard gearing as easy as changing 8 bolts and two chainrings. This design incorporates an asymmetrically optimized bolt pattern with a spider arm that not only holds the chainring in place by way of the bolt, but also supports the chainring to increase system rigidity. And, the crank arms and spider are hollow for maximum stiffness with minimal weight. - Spindle/BB type: Campagnolo Power Torque - Spindle diameter: 25mm - Weight: 754g

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.

Designed specifically for use with H11 groupsets. Full Carbon crank arms and spider are hollow for maximum stiffness and minimal weight. Utilizes USB ceramic ball bearings. Light weight hard anodized alloy chainrings and alloy chainring bolts. Utilizes Campagnolo's Ultra-Torque crank system. - Ultra-Torque axles couple together in the middle of the BB shell via a Hirth Joint that self centers the crank. This results in a very light weight and stiff system that transfers power to the pedals without power loss - Features Campagnolo X.P.S.S. (eXtreme Performance Shifting System) featuring geometrically optimized chainring teeth. Optimized when mated to a full Campagnolo drivetrain - USB ceramic bearings increase smoothness and decrease rolling resistance, weight and the need for maintenance. USB bearings are 50% smoother than standard Campagnolo bearings - Ultra-Torque system have both drive and non-drive side bearings pre-installed - Double standardized bolt circle diameter allows for use of standard, mid-compact and compact chainrings - Required for use with H11 Ergopower shift levers, the crank spider is shifted outward to adjust for 135 and 142mm hub spacing while maintaining the Q-Factor - Requires use of Ultra-Torque bottom bracket cups

Forged AL6061-T6 alloy spiders for Origin8 Thruster Series modular cranksets - SRAM 3-bolt interface for crank arm mounting - Available in both single and double chainring configurations for MTB, Boost/Fat, and Road/Cross/Gravel applications - BCD: 104mm 4-Bolt - Type: 1x

Crank arm tip protectors for Origin8 Thruster Crank Arm Tip Protectors fit all Thruster Series MTB, Boost, and Fat cranksets. Grab a pair to protect your crank arm tips from abrasions and impacts.

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.

Cold-forged 6061 aluminum 5-arm black anodized crankset. - Includes a Black 37T Ring - 110mm BCD - Bottom bracket: Square Taper Cartridge - BB set bolts and chainring are not included - Use 113mm for Isis BB or 110.5mm BB for square taper - Weights are between 13.7oz / 388g for 130mm to 15.9oz / 451g for the 170mm

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.

Ride anywhere 11-speed rider tuned gearing. The power to choose how and where you ride. Consistent shifting performance and enhanced chain management. Optimal balance of durability and lightweight. High efficient and precise shifting. These cranks are Boost compatible. - Enhanced chain retention. - Better sealing and better rotation. - Model Number : FC-M8000-2 - Series : DEORE XT - Cassette Compatibility : 11 - 4-Arm Chainrings : x - Chainring Sizes : 38-28T, 36-26T, 34-24T - Bolt Circle Diameter : P.C.D. 96/64mm - Crank Arm Length : 170mm/175mm - Chain Line : 51.8mm - BB Shell Width : 68, 73mm

- For Race Face 30mm Cinch System cranks only - Allows switching crank arms between bikes, such as a FatBike and an XC MTB - Use RF-2999 for 8mm to 16mm hex wrench adapter to remove spindle

Whether you're looking to take your training to the next level or you simply want a better way to measure energy expenditure, a power meter is your best bet. And, the Power Cranks Ultegra Upgrade Kit is no exception. With our lightweight power sensors on a Shimano Ultegra crankarm, it's the perfect way to enter the power meter game. The development of Power Cranks began with our Human Performance Team looking at riders in realistic scenarios on the bike. Historically, power meters have been validated by two different methods—one is by measuring the produced torque by applying a static, linear load to a crank arm or chainring, while the second uses a power generating motor to pedal the bike. Well, cycling is neither static nor linear, and humans apply power much differently than a machine. So, we found that neither of these methods answer the "real-world" accuracy question. To get the best test for accuracy, in all types of riding scenarios, we built our own cycling treadmill, the WinMill, to measure power output to a known truth. This new benchmark lets us evaluate accuracy under all riding conditions—seated versus standing, various power and cadence levels, different weights, and carrying various types of gear. This data acquisition process is our gold-standard for testing power meters, and through our testing and external validation from the Locomotion lab in Boulder, Colorado, Power Cranks have been proven to have the highest accuracy in real world scenarios (+/- 1.5%). The Power Cranks are also easy to live with, with class-leading temperature compensation firmware and waterproof enclosures. Calibration is only required during seasonal-type fluctuations in temperature, and the included wrench makes battery swaps a breeze. - -/+ 1.5% real-world accuracy tested on the WinMill and validated by the Locomotion Lab in Boulder, CO. - Works with ANT+ and Bluetooth devices. - Easy set-up and diagnostics with the Specialized Power app (iOS and Android versions available). - Shimano 8000 generation Ultegra left-side power measurement. - Right crank arm and chainring NOT included.

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)

- Chainring bolt sets are available in sets of four or five - Bolts have 5mm hex heads - Inner Length: M8x7.5mm Bolt (x4) / M8x7mm Nut (x4) - Material: Steel - Type: 1x

- Single speed crankset - Forged AL6061-T6 alloy crankarms - Includes 46 tooth alloy 3/32" chainring - 42mm chainline with 103mm JIS BB - BCD: 130mm - Weight: 620g - Does not include JIS square taper BB

When Quarq set out to build their next-generation power meter, they wanted to build the best-performing power meter for every facet of cycling and triathlon, and for riders at every level. Like its Quarq brethren, the new DFour measures power in the heart of the bicycle — the crankset spider, scientifically proven to be the place for the most accurate measurement. With a new measurement circuit, revised strain gauge design, improved accuracy throughout the pedal stroke and software advances built into the Qalvin App, the DFour represents the state of the art in power meter technology. Every innovation in Quarq’s next-generation DZero platform is channeled into the DFour Power Meter Crankset. It embodies 10 years of Quarq technology advances with new features such as dual Bluetooth low energy and ANT+ wireless data transfer, the new Qalvin BLE app and compatibility with BB386EVO bottom brackets. - The DFour power meter is a bolt-on upgrade for Shimano’s 11-speed Dura-Ace 9000, Ultegra 6800 and 105 5800 drivetrains. - Must be paired with a compatible SRAM bottom bracket. - ELSA RS power meter owners can upgrade using the DFour Power Meter Spider. - Free firmware upgrades with the Qalvin app. - Compatible with BB30 bottom bracket. - BB30 versions ship with the spacers and wave washer required for BB386EVO installation.

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