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. SRAM eagle - Represents SRAMs newest 1x drivetrain technologies Lighter, tougher, quieter, more durable and more precise drivetrains All-new 1x components, engineered for even greater durability and performance Significant weight advantage over other drivetrains Expanded, optimum, 500-percent gear range a 20-percent increase over our other 1x Chainring Size: 34 DUB technology delivers the lightest, stiffest, strongest crankset available All-new SRAM CARBON TUNED crank technology provides extreme stiffness and light weight All-new chainring technology is designed specifically for Eagle chains and drivetrains The X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and extraordinary durability Speeds: 11/12 BB Compatibility: BSA 68/73, PF89.5, PF92, PF30 MTB73, BB30 MTB73 Crank arm length: 170mm, 175mm Chain line: 52.0mm BB Spindle Interface: DUB Chainring material: Aluminium Crank arm material: Carbon