SRAM X01 Eagle 12 Sp DUB ChainsetThis top-level MTB crankset features carbon fibre arms and an aluminium chainring for the perfect strength to weight ratio. This means that you’ll benefit from its lightweight when climbing and its exceptional strength when descending down the trails. SRAM has also equipped this model with the industry-proven DUB technology, which simplifies the relationship of the spindle to bottom bracket. This makes allows you to enjoy stiffer, simpler and overall better drivetrain performance.- The strongest crank in the entire Eagle ecosystem- Master X01 colourway as part of Eagle Coloursystem - goes with all cassette and chain colour options- Raw aluminium chainring teeth to fresh throughout the entire lifespan of the precision CNC machined direct mount ringStrength is how the X01 Eagle DUB crankset takes capability to places never before reached. It’s the strongest crank in the entire Eagle ecosystem, and it holds this status at a weight that is hard to fathom. Featuring industry-proven and rider-beloved DUB technology to radically simplify the relationship of spindle to bottom bracket, delivering unprecedented simplicity, compatibility and durability. The X01 Eagle DUB Crankset also comes with our Eagle Coloursystem, in the X01 master colourway - to go perfect with all other available cassette and chain colours. With a raw aluminium finish on the X-SYNC 2 chainring teeth - to keep looking fresh throughout its long lifespan.Features: Material: Crank Arm: Carbon; Chainring: Aluminium Use: MTB Speed: 11/12 speed Chainring Size: 32T Crankarm Length: Multiple size options available to select BB Spindle Interface: DUB Guard: No Guard BCD: Direct Mount Chainline: 49.0mm BB Included: No (Compatible bottom brackets: DUB:BSA73, PF89.5, PF92, PF30 MTB73, BB30 MTB73, BSA MTB68SP)Technologies: DUB: The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. SRAM took it a step beyond conventional thinking and made everything simpler-better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance. Carbon Tuned: Strength and stiffness where you need it, lightweight like you want it. Proprietary SRAM carbon lay-up design increases thickness and stiffness at critical stress areas. Tapered, terraced, carbon architecture ensures the greatest weight savings without compromising strength. Eagle: Eagle represents our newest 1x drivetrain technologies. Eagle is a lighter, tougher, quieter, more durable and more precise. Eagle features all-new 1x components, engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. Eagle technology also provides an expanded gear range of 500%, which is equal to 2x11 drivetrains. X-SYNC 2: SRAM X-SYNC 2 Eagle is the next evolution of SRAM X-SYNC technology. The aggressive teeth design provides better chain retention for a smoother, more efficient pedal feel. With a focus on long wear life, the X-SYNC 2 Eagle design reduces friction and the accumulation of mud, grit and grime.Manufacturer Part Numbers:Lunar Oxy 175mm: CW8603008Lunar Oxy 170mm: CW8603009Lunar Polar 175mm: CW8603010Lunar Polar 170mm: CW8603011Buy SRAM Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.