Sram Red E1 Dub Aero

We're not ones to rest on our laurels. So when we found ways to make our lightest and stiffest crank even lighter, we went for it. A new process drops further grams from our hollow carbon arms, and to stay on top of current fit trends we've added our first carbon 160mm crankarm length option. Paired with an aerodynamic 1x chainring, this crank is ready to help you smash PRs.Features:- Single-ring drivetrain simplifies functionality and reduces weight- Direct mount aero chainrings for better aerodynamics- X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control- Ultra-light hollow carbon fiber crankarms are 29 g lighter than previous generation- DUB bottom bracket adds durability and simplicity- Can be upgraded to a power meterSpecifications:- Speeds: 12- BB Compatibility: All SRAM Road DUB BBs- Chainring Size: 50T- Crank arm length: 170mm- Chainline: 45.0mm- BB Spindle Interface: DUB- Chainring material: Aluminum- Bolt Circle Diameter (BCD): Direct Mount (DM)- Crank arm material: Carbon