2-speed, DUB, bottom bracket not included, 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 48 T. Small chainring 35 T. Chainline 45.0 mm Crank length 170.00 mm Secondary color grey System compatibility 12-speed Bottom bracket DUB Variation Crankset 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 power meter ever (max +/-1.5% deviation). Crankset made from a single piece X-Range technology for more range and smoother progression 29 grams lighter than the previous version DUB bottom bracket Optional power meter Sram Article number: 735211 EAN code: 710845898655 Supplier number: 00.6118.683.009 Retail packaging: Yes