2-speed, DUB, without bottom bracket, 12-speed compatible, hollow carbon crank arms, direct mount aluminum chainring, 45mm chainline Number of chainrings 2 Type Article Main color black Large chainring 48 T. Small chainring 35 T. Chainline 45.0 mm Crank length 160.00 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 (max +/-1.5% deviation) power meter ever.Crankset manufactured from a single pieceX-Range technology for more range and smoother operation29 grams lighter than the previous versionDUB bottom bracketOptional power meterSram Article number: 735209 EAN code: 710845898624 Supplier number: 00.6118.683.006 Retail packaging: Yes