Engineered to interface with Bosch motor systems, SRAM drivetrain engineers optimized this ring to combat the high-torque, high-wear situations e-bike riders face. The aggressive T-Type tooth design provides better chain retention for a smoother, more efficient pedal feel with a focus on long wear life. T-Type Bosch DU38 Chainring Features AeroGuard Compatible that fulfills EN 15194:2017 standard Backward compatible with other Eagle Technology T-Type Bosch DU38 Chainring Specs Narrow-Wide Design Yes BCD Direct Mount Bosch DU38 Type Eagle Transmission (T-Type) Teeth 36, 38 Material Steel Speed 12-Speeds