SRAM's XX Eagle cranks have already set the standard for high-performance cycling, with numerous World Championship medals, EWS wins, and Olympic gold medals to their name. However, the new XX SL Eagle DUB Crank takes it to the next level. This crank has been engineered with a carbon fiber, hollow core design that is incredibly strong yet ultra-light, making it the lightest ISO-certified crank on the market. The stiffness has also been maximized for optimal performance. When paired with the revolutionary new XX SL Eagle Transmission (T-Type) direct mount chainring, not only does the crank perform like a champion, but it also looks like nothing you've ever seen before, drawing attention with its striking appearance. Ultra-strong, incredibly light hollow-core carbon fiber design Weight optimized, our lightest-ever Never before seen appearance Powermeter ready Details: Model: FC-XX-SL-D1 Chainline: 55.0mm Hub: Boost (148mm), SuperBoost (157mm) Chainring: 34 teeth Material: Aluminum/Carbon Spindle: DUB Weight: N/A SRAM Eagle Transmission features a SRAM MTB WIDE crank with a 55mm chain line while using the Boost 148mm Over-Locknut Dimension hub standard. Eagle Transmission cassettes move outboard by 2.5mm to optimize for this wider, 55mm chain line. For bikes with SuperBoost 157mm hubs, a 55mm chain line crank can be used. For bikes with a 142mm hub spacing, a 52mm crank must be used. SRAM Eagle Transmission AXS Compatibility: The SRAM XX SL Eagle Transmission Crankset is compatible with the following: Frameset: Any frame that fulfills the “UDH Specification” featuring a hanger-less interface can be upgraded. The SRAM UDH Bike Finder lists all UDH bikes that are compatible with Eagle Transmission. Battery: SRAM AXS Battery Bottom Bracket: SRAM DUB "Wide": BSA73 , PF89.5 , PF92 , PF30 MTB73 , BB30 MTB73 , BSA MTB68SP Chain: XX SL , XX , or X0 Eagle Transmission chains Chainring: XX SL , XX , or X0 Eagle Transmission chainring Cassette: XX SL , XX , or X0 Eagle Transmission cassette Controller: AXS POD Controller , AXS Pod Ultimate Controller Crankset: XX SL , XX , or X0 Eagle Transmission cranksets Freehub: SRAM XD compatible freehubs PowerLock: Eagle Transmission PowerLocks only Rear Derailleur: XX SL , XX , or X0 Eagle Transmission rear derailleur SRAM Eagle Transmission is not compatible with previous-generation Eagle components. However, Eagle Transmission T-Type chainrings are backward compatible with Eagle chains, so they can be used on the current Eagle drivetrains. Non-T-Type Eagle chainrings will not work with Eagle Transmission chains.