Sram crankset force ax force 50 37z krg dub 172.5mm direct mount

2-speed, DUB, without bottom bracket, unicorn grey 12-speed compatible, carbon crank, direct mount aluminum chainrings, 45 mm chainline Number of Chainrings 2 Crank Length 172.50 mm Primary Color grey Large Chainring 50 inch Small Chainring 37 inch Secondary Color multi-color System Compatibility 12-speed Bottom Bracket DUB Type/kind Article Variation crankset