Cranksets

SR Suntour's XCT is a replacement left crank arm for square or diamond taper-oriented cranks that features aluminum alloy construction.

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.

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.

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.

This very light, stiff, and strong carbon crank spider optimizes your power transfer. - Stiff and lightweight. - For use with S-Works carbon road cranks.

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

Low weight, efficiency, and speed: That's what Shimano's Ultegra Crankset brings to every ride. The proprietary four-arm design sheds grams and increases stiffness for more power straight to the road. Computer-designed chainrings with optimally placed ramps and pins are a revolution in front shifting with fast, smooth gear changes that set the standard. A wide range of gearing options and crank lengths offers you the opportunity to find the crank that suits your riding style.

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.

SRAM's GX-1400 2x11 Crankset delivers consistent performance every time out. Featuring SRAM’s X-Glide chain rings, the GX crankset is engineered for 2x11-speed 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. - 11-speed - Open Core and X-Glide technology - CNC machined 7075, two-tone anodized X-Sync chainrings (36/24T) - Weight: 727g (GXP, 175mm)

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

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.

Precision, stiffness and power are yours with SRAM's X0 Crankset. It boasts carbon arms with a forged aluminum spine for mountain-topping stiffness and seriously low weight. Gear changes are just as impressive as the stiffness-to-weight ratio thanks to SRAM's super-stiff X-Glide chainrings that deliver lightning-quick shifting that you'll have to experience to believe. From monster climbing XC races to hard-hitting enduro stages and all the rides in between, SRAM's X0 cranks are your ticket to off-road heaven. - Bottom Bracket sold separately

Precision, stiffness and power are yours with SRAM's X0 Crankset. It boasts carbon arms with a forged aluminum spine for mountain-topping stiffness and seriously low weight. Gear changes are just as impressive as the stiffness-to-weight ratio thanks to SRAM's super-stiff X-glide chainrings that deliver lightning-quick shifting that you'll have to experience to believe. With the weight of a feather and the stiffness of an I-beam, SRAM's X0 cranks are your ticket to off-road heaven. - Bottom bracket sold separately - Bash Guard included on XO 2.2 AM cranks (not pictured)

SRAM's X01 DH X-Sync Crankset is engineered for ultimate downhill performance in the most aggressive terrain. The carbon crank combines stiffness and strength with lightest-in-class weight at under 800 grams. Proven in World Cup and World Championship racing, it’s the crankset made for relentless downhill rides. - X-Sync wide-tooth, narrow-tooth chainring technology provides maximum chain control - High strength aluminum pedal lug - 7075 CNC alloy single ring, 32-tooth- - Compatible with SRAM 1x 7- and 10-speed DH drivetrains - 165mm-long crank arm - Weight: 740g (with bottom bracket)

Built for total chain control, SRAM's X01 X-Sync Crankset is built with carbon arms and forged aluminum spider for maximal stiffness and durability while keeping the weight down. Each tooth’s thickness is CNC-machined to fit better into the chain’s inner and outer links. SRAM's X-Sync Direct Mount chain rings let you tune your gear range to match your terrain, wheel size and riding style. • 32-tooth • Weight: 645g (GXP, 175mm, 32T)

SRAM's X1 1400 Hollow Forged X-Sync Crankset delivers consistent performance every time out. Featuring SRAM’s X-Sync tooth profile, the single-ring specific X1 crankset is engineered for complete chain control. Each tooth’s thickness is CNC machined to work seamlessly with the chain’s inner and outer links. - 6000 series AL - CNC machined 7075, two-tone anodized X-Sync chainring - Bottom bracket configurations: BB30 or GXP - Compatibility option between Boost 148 hub or standard hub - Chainring: 32-tooth - Crank lengths: 175mm, 170mm

SRAM's X9 Crankset is favored by everyone from weekend rippers to marathon riders crossing the Alps. It features a great balance of durability, low weight, and impressive stiffness. SRAM's super-stiff X-Glide chainrings are engineered for fast, predictable shifting no matter what. Light, tough, and sleek, SRAM's X9 cranks are ready to dominate on your next trail ride.

Developed for maximum chain control, SRAM's XX1 X-SYNC Q-Factor Crankset is precisely CNC-machined to support the chain’s inner and outer links perfectly. Plus, the carbon arms and forged aluminum spider make for an incredibly light, stiff crank that delivers every drip of energy to the trail. - BB Included: No - Chainrings Included: Yes - Color: Black - Drivetrain Speeds: 11, 10 - Number of Chainrings: Single - Pedal Spindle: 9/16" - Rings: 32-tooth

Pioneer's Shimano Dura Ace 9000 Power Meter is a revolutionary power meter that attaches stealthily to the left crankarm. The Dura Ace 9000 left crank arm meter allows every rider power-based (also called watt-based) training performance, allowing you to fine-tune your pedaling to find race-winning form without breaking the bank. With advanced technology accurate to +/- 2%, ANT+ transmitting, active temperature compensation, and a mere 22 grams of weight, the Pioneer power meter is perfect for any cyclist. Additionally, installation is fast, simple, and clean with zero wires, magnets, or zip ties. If you find yourself addicted to the data and crave more, upgrade kits that retroactively add drive-side power are available (sold separately).