sram crank arm assembly force dub 1Crank arm assembly Force D2 DUB Unicorn Grey 175 mm (BB Chainrings not included) Specifications Arm Length 175 mm Arm Material Carbon Axle DUB Bcd Direct Mount Boost No Brand SRAM Color Unicorn Grey Gearing Without chainring Item Name Force Item Type Crank arm assembly Other Excl. bottom bracket, Spider, Chainrings and right arm Package '1 1 Series Name Force Speed 12 speed