DZero is Quarq's next-generation power meter platform for those who live to be challenged, pushed, and tested in the toughest scenarios imaginable. Now Quarq has introduced a DZero spider designed to replace the factory spider on Specialized's S-Works carbon crankset. Quarq DZero for Specialized embodies 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 Qalvin BLE app. You also get AxCad accelerometer cadence, the easy-to-replace CR2032 battery, an IPX7 waterproof rating and a 2-year warranty. Features & Benefits: - 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 - Power Balance - OmniCal – swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy – within 1.5%, measuring both legs - Free firmware upgrades with the Qalvin app Essential Details: - Traditional 5-arm spider compatible with Specialized S-Works Carbon Road Crank Arms from 2013-Current. - Available in 130 BCD and 110 BCD. - Replaces the standard spider. - A Specialized lockring tool is required for installation.
$237.99 - $359.99
Shimano's Ultegra Compact Crankset boasts hollow-forged-aluminum arms and a hollow aluminum big ring. These technologies combine for impressive weight savings and superb strength. An integrated bottom bracket axle provides super-efficient power transfer, while chainrings with ramps, pins and notched teeth deliver lightning-quick shifting.
- 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
$54.99 - $59.99
Shimano Acera FC-M361 cranksets feature sturdy construction, reliable shifting, and replaceable chainrings. - Spindle Interface type: Square Taper JIS
$499.00 - $599.99 $599.99 Up to 17% Off
Shimano's Dura-Ace Hollowtech II Crankset has always set the benchmark in strength-to-weight ratios, which is why it's proven itself at the highest echelon of competition. It's made of cold-forged and CNC-machined aluminum and has hollow crankarms and a hollow large chainring. Both chainrings also feature a new tooth design. The result is legendary stiffness for awesome power transfer and precision shifting you'll love. Plus, the Dura-Ace crankset is also lighter than many carbon models.
$241.99 - $242.00
Shimano Dura-Ace Left Crank Arm. - Spindle Interface Type: Hollowtech II
$13.99 - $19.99
• Square taper interface • Only includes left crank
$128.99 - $134.99
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
$279.99 - $349.99
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.
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)
$109.99 - $129.99
- Chainrings Included: Yes - Number of Chainrings: Single - Pedal Spindle: 9/16" - Rings: 42-tooth
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
All-City's lightweight Cross Wizard chainring guard is the perfect addition to a single ring or singlespeed setup. While not a full-on mountain bike ‘bash guard’ these are just the thing to keep your chain on and your teeth intact. Named after the one and only Cross Wizard! (You have to say it like that, with the exclamation at the end.) These are available in 110mm and 130mm bolt circle diameters for all your ‘crossy needs. - Material: CNC machined 6061-T6 aluminum
Replacement crank bolt for WeThePeople's Legacy crank.
Light and strong, these Specialized S-Works carbon road arms, and spider give you the competitive advantage. - Light and strong, these S-Works carbon road arms give you the competitive advantage. - Hollow carbon crank arms offer superior stiffness. - Oversized alloy spindle with Hirth coupling interface. - Fits Specialized road frames with OSBB or PF30 bottom bracket shell. - BB30 compatible. - Compatible with Shimano and SRAM drivetrains. - Finish: Unidirectional carbon fiber - Spider: 110BCD
Promax HF-2 BMX Cranksets are Promax’s top-of-the-line crank offering. Hollow-forged from 6061-T6 aluminum, both crank arms are hollow so they are super stiff, yet lightweight. The crank arms spin on a beefy 24-millimeter spindle permanently fitted into the drive-side arm. The HF-2 is available in anodized red, blue, gold, and black in 170, 175, and 180mm lengths. Now also available in 172.5 and 177.5mm lengths in black only. - Bottom bracket sold separately - Pedal washers included - Meets or exceeds ENBMX standards - Chainline: 43mm - Q-Factor: 167mm - BCD: 104mm - Weight: 29.5 oz.
SRAM Force crank spiders are for repairing your crank or converting it to different gearing. Available in 110mm and 130mm BCDs.
Wolf Tooth's CAMO stands for Chainline and Material Optimization. Available in various chainlines and spider configurations, CAMO spiders allow the use of previously unavailable chainring styles, materials, and chainlines in a lightweight, modular, and customizable package. These spiders are for use with the RaceFace cranksets that have removable Cinch spiders/chainrings and are only compatible with CAMO rings and bolts. Three different chainline options are available. The number and letter refer to the mm offset and direction from the mounting face to the centerline of the teeth: - M8 (minus 8mm - dished toward the frame): For 49mm chainline, used with GXP and long-spindle BB30 cranks. Designed for bikes with 135mm QR, 142mm thru axle, and some 148mm bikes. - M5 (minus 5mm - dished toward the frame): For 52mm chainline (Boost) - P2 (plus 2mm - dished outward away from the frame): For fat bikes that have 190/197 rear spacing but use a 100mm-spindle crank
Many top features are packed into the Centaur crankset. The four-arm design allows for independent bolt circles, offering greater stiffness and structural integrity, and also provides additional versatility, as a single crankset is compatible with both standard compact and semi-compact chainrings. Add these features to the first aluminium crankset with an Ultra-Torque axle and the result is a component that is very similar to the top-of-the range part. - Requires use of Ultra-Torque bottom bracket cups-Double standardized bolt circle diameter allows for use of standard, mid-compact and compact chainrings - 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 - Ultra-Torque system have both drive and non-drive side bearings pre-installed
The design of the four arm carbon fiber cranksets that so well identify the Super Record, Record and Chorus groupsets has also found its way into the fantastic Campagnolo Potenza 11 drivetrain, albeit in an aluminum construction. The Potenza crankset is made with both left and right crank arms in hollow forged aluminum to keep weight to a minimum while maintaining the same performance characteristics of its carbon fiber counterparts. Potenza’s four arm spider design makes for one single crankarm for all chainring options thanks to its unified bolt pattern which allows for all three chainring standards 53/39, 52/36 and 50/34 to be built upon the same crankset. Changing between compact and standard with the Potenza groupset is as easy as changing eight bolts and two chainrings. While the 4-arm bolt pattern offers advantages in terms of practicality, the Campy Tech Lab designed it primarily with performance characteristics in mind. The eight bolt pattern with a spider arm design that not only holds the chainring in place by way of the bolt but also supports the chainring and in doing so, increases system rigidity to the point of surpassing its direct competitors in laboratory tests. -Double standardized bolt circle diameter allows for use of standard, mid-compact and compact chainrings -Power-Torque system have drive-side bearing pre-installed. The non-drive bearing comes pre-installed in the bottom bracket cup -Power-Torque Plus system utilizes a self extracting crank bolt for easy disassembly -Requires use of Power-Torque bottom bracket cups -Features Campagnolo X.P.S.S. (eXtreme Performance Shifting System) featuring geometrically optimized chainring teeth. Optimized when mated to a full Campagnolo drivetrain -Power-Torque system uses a single piece axle fixed to the drive-side crank arm which allows for simplicity and a light weight and rigid axle
$71.99 - $72.00
- Crank Construction : HOLLOWTECH II - Optimum power transfer
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
$999.95 $1,149.99 13% Off
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.
The new Super Record 12x2 Speed crankset: an intense concentration of innovation that results in the greatest possible stiffness and precision in derailing, whilst providing a dedicated aerodynamic “super design." The new carbon fiber Super Record 12x2 Speed crankset has been made lighter on the inside through Campagnolo Hollow Technology, which uses the Ultra-Torque bracket system with a titanium axle to transfer all of the force the athlete applies to the pedal to the drivetrain. The new Super Record 12x2 Speed crankset can be installed on any type of frame, whether or not it is being used with disc brakes because it optimizes the chain line on the frame with a rear hub flange measuring 130, 135 or 142 millimeters, without affecting the Q factor, which remains constant at 145.5 millimeters thanks to the new hand crank design. The use of ceramic Cult bearings leads to obtaining the smooth ride that the Campagnolo brand is known for. The innovative design of the outer chainring ensures faster, quieter derailing owing to the contoured pin. The symmetrical design of the inner chainring teeth allows improved stability with chain crossovers. The double wheel sizing standards (112 and 145 millimeters) combined with the eight fixing screws, optimize weight and stiffness through the increased use of carbon fiber. The varying number of pins for each of the three chainring combinations (34/50, 36/52, 39/53) facilitates upshifting due to the optimized free strokes associated with each combination. The special drains on the inside of the outer chainrings optimize performance when downshifting in dead spots.
$689.99 - $690.00
Triathlon. Time Trial. Cyclocross. Some disciplines are made for 1x. And while SRAM's X-Range 2x set up has integrated much of the simplicity of a 1x system, there are still times when a single ring is best. The SRAM RED 1 crankset offers the most demanding racers the right mix of features—aerodynamics, durability, and simplicity. - Single-ring drivetrain simplifies functionality and reduces weight - 48 and 50t variants feature direct mount aero chainrings for better aerodynamics - Non-aero chainrings can be installed with a single tool, making gearing changes a breeze - 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 - Can be upgraded to a power meter - Version: D1
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
The SRAM RED crankset leverages a pivotal design innovation: smaller chainrings and a wider cassette range. This leads to smoother and faster shifting up front and more useful gearing for today's riders. The new configurations improve cadence and efficiency while also delivering shifts that are crisp, clean and quick-every time. Features - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Improved front shifting performance for crisp and accurate front shifts - Unique chainring design results in a lighter weight, stiffer, more durable crankset - DUB bottom bracket adds durability, simplicity and broad compatibility - Power upgradeable Specifications - Speeds: 12 - BB Compatibility: All SRAM Road DUB BBs, GXP/PF GXP 68mm - Chainring Size: 46/33, 48/35, 50/37 - Crank arm length: 165mm, 167.5mm, 170mm, 172.5mm, 175mm - Chainline: 45.0mm - BB Spindle Interface: 24mm, DUB - Chainring material: Aluminum - Guard: No Guard - Bolt Circle Diameter (BCD): Direct Mount (DM) - Crank arm material: Carbon
$4.99 - $7.99
Used to adjust crank chainline or ensure proper bearing preload when using 30mm spindle cranks. - Inner Diameter: 30mm - Outer Diameter: 41.5mm - Machined engineering-grade Delrin - Sold Individually
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
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