SRAM RED XPLR E1 170x42 DM DUB NoBB CARBONThe RED XPLR crankset maximizes tire clearance and features our hollow carbon arms paired with the direct mount 1x chainring of your choice Sram X Sync wide tooth, narrow tooth chainring technology provides maximum chain control Non aero direct mount chainrings from 38T to 46T can be swapped with a single tool Single ring drivetrain simplifies functionality and reduces weight Ultra light hollow carbon fiber crankarms DUB bottom bracket adds durability