Sram: LIGHTER. STIFFER. STRONGER. 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 crank set design. Our all-new XX1 Eagle CARBON TUNED crank set 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 crank sets mean simplicity, compatibility and durability. THINGS TO REMEMBER Eagle represents our newest 1x drivetrain technologies Eagle is a lighter, tougher, quieter, more durable and more precise drivetrains Eagle features all-new 1x components, engineered for even greater durability and performance Eagle has a significant weight advantage over other drivetrains Eagle technology allows an expanded, optimum, 500-percent gear range a 20-percent increase over our other 1xFEATURES AND BENEFITS DUB technology delivers the lightest, stiffest, strongest crank set available All-new SRAM CARBON TUNED crank technology provides extreme stiffness and light weight All-new chaining technology is designed specifically for Eagle chains and drivetrains The X-SYNC 2 chaining provides significantly quieter performance, with better mud clearing and extraordinary durability SPECIFICATIONS Speeds: 11/12BB Compatibility's 68/73,PF89.5,PF92,PF30 MTB73, BB30 MTB73Chainring Size: 34Crank arm length: 170mm, 175mmChain line: 52.0mmBB Spindle Interface: DUB Chain ring material: Aluminium Guard: No Guard Bolt Circle Diameter (BCD): Direct Mount (DM)Crank arm material: Carbon Colour (Crank arm): Black, Gold