2-speed, DUB, without bottom bracket, 12-speed compatible, hollow carbon crank arms, direct mount aluminum chainring, 45 mm chainline Number of Chainrings 2 Type Article Main Color black Large Chainring 46 T. Small Chainring 33 T. Chainline 45.0 mm Crank Length 165.00 mm Secondary Color grey System Compatibility 12-speed Bottom Bracket DUB Variation Set SRAM continues to innovate; SRAM's lightest and stiffest crank is now even lighter thanks to optimized hollow carbon cranks. The optional power meter is the ultimate tool to take performance to a higher 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 one 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: 735215 EAN Code: 710845898693 Supplier Number: 00.6118.683.013 Retail Packaging: Yes