Cranksets

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)

The XX1 Eagle Fat Bike DUB crankset has been re-examined and re-engineered. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility, and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Carbon-tuned lay-up crank design provides extreme stiffness and light weight - 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 - Fat bike frame compatible - BB Included: No - Chainring BCD: SRAM Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 190/197 Hubs

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 provides 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 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

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

Machined aluminum spacers for freehubs. Great for fine tuning freewheel and cassette placement or improving chainline. Also good for bottom bracket spacing with BSA BB cups. - Inner Diameter: 35.0mm - Outer Diameter: 40.7mm - Material: Aluminum - Finish: Polished - Bags of 10

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 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

The STYLO Carbon DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the new STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - 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 - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: Sram Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 135/142 MTB Hubs

The new Gen 3 single-sided Stages Power L meter is built on to a non-drive-side FSA SL-K BB30 crank arm. Tour Proven. Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world’s best product proving ground, then Stages Power is proven as the world’s best power meter. Active Temperature Compensation as standard equipment. Consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings no matter the environmental conditions. Individual meter calibration for the most accurate results. Stages Power meters are calibrated individually to ensure a +/- 1.5% accuracy level. Individual calibration means that you can trust the data produced by our system. Additional features: - ± 1.5 % accuracy in all conditions - Active temperature compensation - Accelerometer based cadence measurement - Wirelessly upgradable firmware - LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset - Updated accelerometer and addition of gyroscope for improved cadence resolution - Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Specifications - Power meter housing: low profile design, with robust door interface - Weight: Only adds 15g to base crank arm - Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter - Power range (Watts): 0 to 5000 - Cadence range (rpm): 10-220 - Water resistance rating: IPX7 In the box - Power Meter - High quality CR2032 coin cell battery - Lifetime access to Stages Link for power meter management and firmware upgrades. - 2 months free access to Stages Link premium training and coaching features. - Product Identification Card with Serial Number and ANT+ I.D. Number. - User Guide

The new Gen 3 single-sided Stages Power L meter is built on to a non-drive-side Stages Carbon crank arm and it compatible with SRAM GXP road drivetrains. Tour Proven. Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world’s best product proving ground, then Stages Power is proven as the world’s best power meter. Active Temperature Compensation as standard equipment. Consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings no matter the environmental conditions. Individual meter calibration for the most accurate results. Stages Power meters are calibrated individually to ensure a +/- 1.5% accuracy level. Individual calibration means that you can trust the data produced by our system. Additional features: - ± 1.5 % accuracy in all conditions - Active temperature compensation - Accelerometer based cadence measurement - Wirelessly upgradable firmware - LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset - Updated accelerometer and addition of gyroscope for improved cadence resolution - Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Specifications - Power meter housing: low profile design, with robust door interface - Weight: Only adds 15g to base crank arm - Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter - Power range (Watts): 0 to 5000 - Cadence range (rpm): 10-220 - Water resistance rating: IPX7 In the box - Power Meter - High quality CR2032 coin cell battery - Lifetime access to Stages Link for power meter management and firmware upgrades. - 2 months free access to Stages Link premium training and coaching features. - Product Identification Card with Serial Number and ANT+ I.D. Number. - User Guide

The STYLO Carbon DUB crankset is for riders who feel most at home when riding endless single track. Built tough, to handle lines through rock gardens and trail, the new STYLO Carbon is strong, stiff and light. Featuring SRAM’s DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. DUB-powered cranksets mean simplicity, compatibility and durability. - SRAM DUB technology creates a lighter, stiffer and stronger crankset - Proprietary carbon layup technology - 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 - Fully compatible with any 1x drivetrain - BB Included: No - Chainring BCD: Sram Direct Mount - Crank Intended Use: Mountain - Number of Chainrings: Single - Drivetrain Speeds: 12, 11, 10 - Spindle Interface Type: SRAM DUB - Chainline/Hub Compatibility: 141/148 Boost Hubs

Sharpened For Speed We designed the new STYLO Carbon crankset for riders who feel most at home when riding endless single track. This is a completely new crankset, employing our proprietary layup technology. Built tough to handle lines through rock gardens and trail, the new STYLO Carbon is strong, stiff, and light. Combined with the new SRAM Eagle direct-mount chainrings, it's a compatible crankset to the Eagle drivetrain. 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. Features: - Proprietary carbon layup technology. - Fully compatible with any 1x drivetrain. - DUB technology features a uniform approach to bottom bracket fitment, better sealing against contamination, and is forward and backward compatible. - Direct-mount ring. - ISO 4210 compliant. See Declaration of Conformity for details. Specifications: - Speeds: 11/12 - BB Compatibility: DUB BSA MTB 100, DUB PF MTB 121, DUB BSA73,DUB PF89.5,DUB PF92,DUB PF30 MTB73,DUB BB30 MTB73, DUB:BSA73, PF89.5, PF92, PF30 MTB73, BB30 MTB73, BSA MTB68SP - Chainring Size: 30, 32, 34 - Crank Arm Length: 170mm, 175mm - Chainline: 49.0mm, 52.0mm, 55.0mm, 66.5mm, 76.5mm - BB Spindle Interface: DUB - Chainring Material: Aluminum - Guard: No Guard - Bolt Circle Diameter (BCD): Direct Mount (DM) - Crank Arm Material: Carbon

- BCD: Direct Mount Shimano - Chainline: 55mm - Crank Arm Length: 170mm - Material: Aluminum - Interface: Hollowtech II - Speed: 11/12 - Crank Spindle Diameter: 24mm - Drivetrain Spacing: SuperBoost+ - Pedals Thread: 9/16''

The Campagnolo Chorus 12-Speed Crankset features lightweight carbon crank arms, and is optimized for Campagnolo's Ultra-Torque crank system. - Utilizes Campagnolo's Ultra-Torque crank system to provide a very lightweight and stiff system that transfers power to the pedals without power loss - Directly molded unidirectional carbon fiber cranks, steel axle, and aluminum chainrings provide exceptional stiffness and optimum power transmission - Symmetrical teeth on the internal chainring allow for fluid and precise transmission, even with extreme cross-chaining - Chainrings are surface-treated for longer life - Q-Factor: 145.5mm - Design is optimized to run multiple chainring combinations - Number of Chainrings: Double - Chainline/Hub Compatibility: 130 Hubs, 135/142 Road Disc Hubs > 415 mm Chainstay - Spindle Interface Type: Campagnolo Ultra-Torque - Chainring BCD: 96 - Pedal Spindle: 9/16" - Crank Intended Use: Road - Drivetrain Speeds: 12 - BB Included: No - Weight: 686

Machined engineering-grade Delrin inserts for adapting bottom brackets to a different type of crankset spindle. - Adapts PF30 and Cannondale BB30-73A bottom brackets for use with SRAM/TruVativ cranksets - Delrin adaptors fit between bearings and crank spindle - BB Shell Width (mm): 68 mm , 73 mm - Spindle Interface Type: TruVativ GXP - BB/Frame Interface: PF30

The new Gen 3 single-sided Stages Power R meter is built on to a drive-side Shimano Ultegra R8000 crank arm and is compatible with all frames that fit Shimano Hollowtech II cranks. Tour Proven. Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world’s best product proving ground, then Stages Power is proven as the world’s best power meter. Active Temperature Compensation as standard equipment. Consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings no matter the environmental conditions. Single drive-side power meter increases frame compatibility or upgrades an existing Stages Power L meter to Stages Power LR. Stages Power R offers increased compatibility with direct mount brakes and frames that lack adequate chainstay clearance, as well as the ability to upgrade existing Stages Power L power meters to Stages Power LR bi-lateral (dual) meter systems. Additional features: - ± 1.5 % accuracy in all conditions - Active temperature compensation - Accelerometer based cadence measurement - Wirelessly upgradable firmware - LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset - Updated accelerometer and addition of gyroscope for improved cadence resolution - Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength Specifications - Power meter housing: low profile design, 2x phillips head screw to access battery compartment - Weight: Only adds 20g to base crankset - Battery Life: 175+ hours (via coin cell: CR2032) - Power range (Watts): 0 to 5000 - Cadence range (rpm): 10-220 - Water resistance rating: IPX7 In the box - Drive-side power meter - High quality CR2032 coin cell battery - Lifetime access to Stages Link for power meter management and firmware upgrades. - 2 months free access to Stages Link premium training and coaching features. - Product Identification Card with Serial Number and ANT+ I.D. Number. - User Guide

The new Record 12x2 Speed crankset: a new hole-free design for the right-hand crank that optimizes aerodynamics. The new carbon fiber Record 12x2 Speed crankset with unidirectional finishing guarantees continuity with the finishing of the entire groupset, whilst maintaining the Ultra-Torque bracket system on the steel axle to ensure perfect transmission of power. The new 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 that remains constant at 145.5 millimeters. 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) enable reducing the weight through greater use of carbon fiber. There are eight fixing screws for increased structural stiffness. 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.

The new Gen 3 Stages Power meter is built onto a Shimano Dura-Ace R9100 crankset. The Stages Power meter is placed on both the drive and non-drive side of the crank in order to independently measure a rider's left and right legs. Tour Proven. Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world’s best product proving ground, then Stages Power is proven as the world’s best power meter. Active Temperature Compensation as standard equipment. Consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings no matter the environmental conditions. ATC is the key reason a rider can trust data from Stages Power in all conditions. Individual meter calibration for the most accurate results. Stages Power meters are calibrated individually to ensure a +/- 1.5% accuracy level. Individual calibration means that you can trust the bi-lateral data produced by our system, as it's a real measurement and not an estimation. Additional features: - +/- 1.5 % accuracy in all conditions - Active temperature compensation - Accelerometer based cadence measurement - Wirelessly upgradable firmware - LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset - Updated accelorometer and addition of gyroscope for improved cadence resolution - Upgraded BLE and ANT+ radios offer a 6x improvement of data transmission strength Specifications - Power meter housing: low profile design, with robust door interface. Tool free battery replacement on the left arm and phillips head - screw access on the drive side - Weight: Only adds 35g to base crankset - Battery Life: 175+ hours (via 2 coin cell: CR2032) - Power range (Watts): 0 to 5000 - Cadence range (rpm): 20-220 - Water resistance rating: IPX7 In the box - Non-drive-side power meter - Drive-side power meter - Shimano chainrings - 2x high quality CR2032 coin cell battery - Lifetime access to Stages Link for power meter management and firmware upgrade. - 2 months free access to Stages Link premium training and coaching features. - Product Identification Card with Serial Number and ANT+ I.D. Number. - User Guide

True competitors are always looking for a performance advantage - a relentless pursuit of equipment that is lighter, stiffer, stronger, and more durable. To create the best drivetrain possible, we re-examined and re-engineered our crankset design. Our all-new XX1 Eagle CARBON TUNED crankset is our lightest, stiffest, and strongest to date. DUB technology enhances this by simplifying the relationship of the spindle to the bottom bracket and redefining the measure of durability. DUB-powered cranksets mean simplicity, compatibility, and durability. - Chainrings not included

The Campagnolo EKAR Crankset is a lightweight and efficient 1x13-speed crank designed for gravel riding and racing. - The 2-piece crank features a strong and durable 630-grade steel alloy crank axle mated to a lightweight carbon fiber spider and unidirectional carbon fiber arm - Must be used with a Campagnolo Pro-Tech bottom bracket - Chainring features a narrow-wide tooth design for efficient drive and maximum chain security - Easy access to external crank bearings - Easily interchangeable alloy rings – no need to disassemble the crankset - Narrow Q-factor – 145.5mm Specifications: - Number of Chainrings: Single - Spindle Interface Type: Campagnolo Ultra-Torque - Chainring BCD: 123 - Pedal Spindle: 9/16" - Drivetrain Speeds: 13

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

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

Shimano, FC-TX801, Crank Arm, 170mm, Square, Black

- 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

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

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

With the conception of our Cane Creek eeWings Titanium crank set we cut no corners, and our CNC-machined preload assembly is no exception. The Cane Creek Crank Preloader is equipped with an aluminum preload ring, an aluminum inner thread ring, and a titanium 2.5mm hex fastening bolt. We are so proud of this piece of jewelry that we decided to design it to fit onto other 30mm crank spindles from SRAM and Raceface, and 28.99mm SRAM Dub Crank spindles. Lose the plastic preload on your crankset, add peace of mind. - 7075 Aluminum thread ring - 7075 Aluminum preload spacer adjuster - Grade 5 Titanium 2.5mm hex fastening bolt - Fits Raceface 30mm spindles, SRAM 30mm spindles, and SRAM 28.99mm DUB spindles

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.

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