SRAM Crankset Force D2 DUBMore Range The crank is where all the magic happens on a bike. Your pedaling power is transferred to the rear wheel so you can accelerate forward. With an upgraded crank, more of your pedaling power will go to the rear wheel. The SRAM Crankset Force D2 DUB is built with X-Range gearing technology that gives you more range and a smoother gear progression, so you're always in the right gear. It has a unique chainring shape that results in a lighter weight, stiffer, and more durable crankset. The carbon fiber crankarms are lighter and stiffer compared to aluminum and the DUB bottom bracket interface adds durability and simplicity. Features X-Range gearing technology gives you more range and a smoother gear progression Unique chainring shape results in a lighter weight, stiffer, and more durable crankset Carbon fiber crankarms for light weight and stiffness Can be upgraded to a power meter SPECIFICATIONSSpeeds12-Speed BB Compatibility All SRAM Road DUB BBs Chain Ring46/33T, 48/35T, 50/37TCrank Arm Length165mm, 167. 5mm, 170mm, 172. 5mm, 175mm, 177. 5mm BB Spindle Interface DUBChainring Material Aluminum Bolt Center Diameter (BCD)Direct Mount Crank Arm Material Carbon Fiber Chainline-Bottom Bracket Included No Intended Use Road, Gravel Weight N/A | Sram | Crankset Force D2 Dub D2 Dub 165 Dm 4835(No Bb) | Aluminum