2-speed, DUB, without bottom bracket, 12-speed compatible, hollow carbon crank arms, direct mount aluminum chainring, chainline 45 mm Number of chainrings 2 Type Article Main color black Large chainring 46 T. Small chainring 33 T. Chainline 45.0 mm Crank length 175.00 mm Secondary color gray System compatibility 12-speed Bottom bracket DUB Variation Groupset SRAM continues to innovate; SRAM's lightest and stiffest crank is now even lighter thanks to an optimized hollow carbon crank. The optional power meter is the ultimate tool to take performance to the next level. Professionals can no longer do without it. It is the lightest, stiffest, and most accurate (max +/-1.5% deviation) power meter ever. Crankset manufactured from a single piece X-Range technology for more range and smoother operation 29 grams lighter than the previous version DUB bottom bracket Optional power meter SRAM Article number: 735218 EAN code: 710845898730 Supplier number: 00.6118.683.017 Retail packaging: Yes