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Parts & Accessories

Quarq DFour Power Meter Spider
$779.00
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 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 Spider represents the state of the art in power meter technology - The DFour Spider is a bolt-on upgrade for Shimano’s 11-speed Dura-Ace 9000, Ultegra 6800 and 105 5800 chainrings. - Bluetooth low energy technology and ANT+ wireless data transfer. - 10K Temperature Compensation. - Battery - CR2032, 200-hour battery life, change without tools. - OmniCal - swap chainrings without affecting accuracy. - IPX7 waterproof rating. - Accuracy within 1.5%
Quarq DZero Power Meter Spider for Specialized
$779.00
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.
SRAM XX1 Eagle Quarq Power Meter Boost 148mm Crank Spider Assembly
$729.00
SRAM's power meter technology is reliable, accurate and easy to use. Now available as a spider by itself as an easy upgrade for existing cranks. The Dzero series offers improved data transfer and frame fit compatibility. - Fits 8-Bolt interface Quarq XX1 Power Meters (8-Bolt used since Aug '14) - Measures power for both legs with +/- 1.5% accuracy - Dual Bluetooth lowenergy and ANT+ wireless data transfer - AxCad system provides no-magnet cadence data - Free firmware updates with the QALVIN APP - Boost 148 compatible
Specialized Power Cranks - Shimano Ultegra Upgrade Kit
$472.45 - $525.00 $525.00 10% Off
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 are 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 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 8000 generation Ultegra left-side power measurement. - Right crankarm and spider NOT included. - Available in 170-175mm crankarm lengths.
Specialized Power Cranks - Shimano Ultegra Upgrade Kit
$525.00
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.
Specialized Power Cranks - Shimano 105 Upgrade Kit
$425.00
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.
MRP Mini G4 Carbon Chain Guide
$224.95
The new G4 picks up where the famous G3 left off — three consecutive appearances in the Dirt 100 issue, as well as countless World Cup and FMB podiums made it the most sought after full-featured guide on the market. Upgrades to the G4 include a new co-molded upper guide that utilizes a softer durometer TPU material on the interior walls and ceiling to silence drivetrain chatter. An improved material formula is utilized in the updated skid — making the best even better. - NEW Full-size, nylon upper guide with co-molded TPU material on the interior walls and ceiling that silences chain contact. - Integrated skid protects chainrings and glides over rocks and obstacles. - Includes standard pulley and G-slide slider block for quiet, dependable operation in muddy and dank conditions. - Compatible with chainlines 50mm and wider (55mm and wider on 83mm BB shells)
Shimano XTR M900 Left Crank Arm
$208.00
Shimano XTR Left Crank Arms - Spindle Interface Type: Hollowtech II
Wheels Manufacturing Inc. BB30/PF30 Multi-Adapter Kit
$200.00
- 8 bikes worth of adapters for Shimano 24mm and SRAM/Truvativ 24/22mm cranks to virtually any BB30 or Pressfit 30 frame, including mountain bikes, 2x10 systems, narrow-shell road bikes, road triples, etc. - 65 piece kit includes 4 each Shimano and SRAM adapter sets, plus extra spacers for chainline adjustment and a puller for removing adapters - Includes: (8) Shimano adapter (24mm ID, Shimano right or left; SRAM right only), (4) SRAM-left adapter (22mm ID, Shimano right or left; SRAM right only), (4) SRAM-right adapter (24mm ID, Shimano right or left; SRAM right only), (12) 0.7mm spacer - right (24mm ID, Shimano right or left; SRAM right only), (4) 1.8mm spacer - right (24mm ID, Shimano right or left; SRAM right only), (4) 2.5mm spacer - right (24mm ID, Shimano right or left; SRAM right only), (8) 1.0mm spacer - left (30mm ID, SRAM), (4) 2.5mm spacer - left (30mm ID, SRAM), (4) 5mm spacer - left (30mm ID, SRAM), (4) 10mm spacer - left (30mm ID, SRAM), (8) wave washer, (1) removal tool for pulling adapter out of BB
FSA BB-386EVO/Press-Fit BB30 Bearing Assembly
$49.99 - $199.99
- 42x30x7mm BB30 cartridge bearings housed in a press-fit, composite sleeve assembly for use with a BB386EVO or BB30 crankset in a BB386EVO or Press-Fit 30 (PF30) frame - Road sets include bearings, shields and a wavy washer - Mountain sets include bearings, shields and a spacer - Choose ceramic or stainless steel options
MRP AMg V2 Carbon
$169.95
The newly redesigned All-Mountain Guide is the love child of two innovative and revered product lines, the 1x and XCg. Perfectly suited to the increasingly popular all-mountain segment, the All-Mountain Guide shares the freshly updated "TR" upper guide with the 1x, and adds MRP's patented integrated skid. The All-Mountain Guide is a great choice for 5-6" travel bikes when used with the latest tensioned rear derailleurs or on its own for shorter-travel trail bikes or hardtails that require bash protection. The contact-free, "upper-only" chain retention means the All-Mountain Guide will be virtually silent and completely drag-free when pedaling. The patented integrated skid will protect your crank and chainring and prevent the chain from ever contacting and potentially damaging your expensive frame. - Perfect for "clutched" 1x10 and 1x11 drivetrains, as well as those using chain-retaining rings (like our Wave Ring) - New nylon integrated skid protects chainrings and glides over rocks and obstacles - 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 - Available in 28-32t and 32-38t sizing - All install and adjustment operations possible with just a single 4mm HEX wrench. - Compatible with chainlines 49mm and wider
MRP Mini G4
$169.95
The new G4 picks up where the famous G3 left off — three consecutive appearances in the Dirt 100 issue, as well as countless World Cup and FMB podiums made it the most sought after full-featured guide on the market. Upgrades to the G4 include a new co-molded upper guide that utilizes a softer durometer TPU material on the interior walls and ceiling to silence drivetrain chatter. An improved material formula is utilized in the updated skid — making the best even better. - NEW Full-size, nylon upper guide with co-molded TPU material on the interior walls and ceiling that silences chain contact. - Integrated skid protects chainrings and glides over rocks and obstacles. - Includes standard pulley and G-slide slider block for quiet, dependable operation in muddy and dank conditions. - Available in "Mini" 32-36t and "Mega" 36-40t sizing - Compatible with chainlines 50mm and wider (55mm and wider on 83mm BB shells)
MRP SXg Alloy
$169.95
With the SXg, MRP delivers a guide without compromise and with no equal. No longer does the desire for protection and both upper and lower retention have to come at the expense of weight, efficiency, or the addition of moving parts - have your cake and eat it too. With the SXg covering all those bases, it’s the first guide in history that’s equally at home on anything from aggressive, short-travel bikes to Armageddon-ready Rampage rigs, and everywhere in-between. It’s a guide that refuses to be pigeon-holed, blurring the lines between typical industry definitions - a little country and a little rock, as they say. But, in this case, it’s a whole lotta rock. High-security chain retention and bulletproof chainring defense in an innovative, lightweight package with zero efficiency loss make the SXg ideal for a wide range of uses. Whippersnapper™ technology provides lower retention without moving parts or friction. The most advanced chainguide on the market, the SXg is the go-to of the top Rampage stuntmen, World Cup downhill pilots, and superhuman enduro tacticians. - Whippersnapper™ lower guide. - Full-size, nylon HD upper guide with co-molding. - Integrated SX skid provides safeguard to the chainring and glides over rocks and obstacles. - Nylon and TPU co-molding in the Whippersnapper™ provides durable protection from external blows and mutes internal contact with the chain. - Swingset™ hardware. - All installation and adjustment operations are possible with just a single 4mm HEX wrench. - Available in 30-34t and 34-38t sizing. - Alloy guides compatible with chainlines 49mm and wider, carbon 50mm and wider. Boost 148 compatible. - ISCG-05 only. - 149g (34-38t Alloy ISCG-05)
Specialized S-Works Carbon Spider
$159.99
This very light, stiff, and strong carbon crank spider optimizes your power transfer. - Stiff and lightweight. - For use with S-Works carbon road cranks.
Easton EC90 SL Spider and Ring Assembly
$149.99
The Easton Spider and Ring assembly features the Cinch Direct Mount System, making a swap between ring configurations a fast and simple procedure. This system also provides a significant weight savings by eliminating the material overlap and extra bolt hardware that is required for a traditional spider with chainring configuration. - EA90 Aluminum
Easton Spider & Ring Assembly
$149.99
Easton spider and ring assemblies for CINCH cranks.
Shimano XTR M9000 Chainring Bolt and Cap Set
$90.00 - $117.00
Shimano Chainring Bolts - For use with M9000 chainrings
Shimano SLX M7000-B1 Boost Crank Arm Set
$100.99
- Pedal Spindle: 9/16" - BB Included: No - Chainring BCD: 96 Shimano Asymmetric - Intended Use: Mountain - Spindle Interface Type: Shimano Hollowtech II - Chainline/Hub Compatibility: 141/148 Boost Hubs
MRP 2x Steel
$94.95
Designed to work seamlessly with the new wave of 2×10 drivetrains, the 2x utilizes MRP's patented integrated skid chainring protection (US Patents RE 42,436 / 8,235,849 Patents Pending) and features a dual pulley tensioning system. Notable on the 2x system is the absence of a crank-mounted bash guard or guide ring, instead it relies on the front derailleur and cutting-edge lower pulley assembly for complete chain retention. The integrated skid protects the chainrings from impacts without the added weight of a full bash ring. The dual pulley tensioning system ensures that the chain is properly tensioned and in the right position, keeping it on the chainring in the roughest conditions. The dual pulleys also reduce drag and noise compared to other designs, ensuring a better riding experience. Finally, the raised top fin profile prevents the chain from dropping to the BB shell. - Removable integrated skid protects chainrings and glides over rocks and obstacles - Dual pulley design provides precise chain engagement while reducing noise and drag - Raised top fin profile prevents the chain from dropping to the BB shell - BB mounted guides are only compatible with traditional, threaded BB systems
Shimano Deore XT M8000 Left Crank Arm
$93.00
Shimano XT Left Crank Arm - Spindle Interface Type: Hollowtech II
Easton EC90 SL Crank Spindle
$89.99
Replacement crank spindle for Easton EC90 SL cranks
Race Face CINCH Spindle Kit 30mm
$79.99 - $89.99
Spindle and hardware kit for Race Face CINCH MTB and fatbike cranks.
Race Face SixC CINCH Spindle Kit
$89.99
For Race Face 30mm Cinch System cranks only. Use RF-2999 for 8mm to 16mm hex wrench adapter to remove spindle. - 30 x 136.5mm is for 120mm spaced BMX hubs and 68/73mm BBs - 30 x 151.5mm is for 150/157mm Hubs
MRP G3 Steel
$89.95
The G3 features MRP's patented integrated skid (US Patents RE 42,436 / 8,235,849 Patents Pending), which protects critical drivetrain components like the crank and chainring from damage and glides over rocks and obstacles. The skid and lower guide are combined into one solid structure. The skid and lower guide also feature our new attachment system, the Swingset. The Swingset system features a pivot at the forward skid mount that allows the skid to swing down for super easy crank and chainring installation. - Integrated skid protects chainrings and glides over rocks and obstacles - Includes standard pulley and new G-slide slider block for quiet, dependable operation in muddy and dank conditions. - Nylon upper guide - Quietring wrap on the upper guide's tail mitigates chain-slap - 34-38t sizing - Stamped steel backplate - All install and adjustment operations possible with just a single 4mm HEX wrench. - 236g (ISCG-05)
Blackspire Einfachx Chain Guide
$64.26 - $82.62
- Simple but effective upper chain guide for 1x9/10sp applications - Captive hardware for easy installation and adjustment - Adjustable for 49.5-50.5mm chainlines - BB, ISCG, ISCG-05, E-type and Direct Mount (Shimano) mounting options - Fits 32-42t rings - 55-65g
MRP 1x V3
$74.95
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. - BB mounted guides are only compatible with traditional, threaded BB systems
Shimano 105 5800 Left Hand Crank Arm
$72.00
- Crank Construction : HOLLOWTECH II - Optimum power transfer
Shimano SLX M7000 Left Crank Arm
$72.00
- Series: SLX - Crank Construction: HOLLOWTECH II Technology
North Shore Billet 1x11 Spider for SRAM Cranks
$70.00
The North Shore Billet 1×11 Spider replaces the removable chain ring spider so that you can run a SRAM XX1 chain ring on Truvativ X0, X01, X1, X9, GX, S2210, and S1400 cranks. There are no mounting holes for the granny ring and the single ring’s position is designed to give a better chain line throughout the entire gear range. The chain ring tabs accept an optional rock ring for All Mountain or Enduro riding.
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