SRAM T-Type E-MTB Chainring For Higher Torque E-bikes are wonderful for riding on the trails. However, with higher the high torque from the motor, you'll need special components that won't wear out as quickly. The SRAM T-Type E-MTB Chainring utilizes a T-Type design and is backward compatible with Eagle Technology (X-SYNC II). SRAM drivetrain engineers optimized this ring to combat the high-torque, high-wear situations e-bike riders face. The aggressive tooth design provides better chain retention for a smoother, more efficient pedal feel with a focus on long wear life. The chainring comes in several different variants that depend on the type of crankset you're using. Features Optimized for high-torque and high-wear situations that e-bike riders face Aggressive tooth design that provides better chain retention for a smoother and more efficient pedal feel Backward compatible with Eagle Technology (X-SYNC II)SPECIFICATIONSDrive Train Speed12-Speed Tooth Count34, 36, 38TMaterial Steel Direct Mount Type-Chainline Boost Offset-Intended Use E-MTBWeight155g (34T)Chainline/Chainring Offset Guidelines Rear Spacing135mm / 142mm148mm Boost Super Boost 150mm / 157mm Fat Bike (170mm, 190mm, 200mm)Chainline48 - 50mm51 - 53mm54 - 56mm56mm+Chainring Offset~6mm~3mm~0mm~+2mm | Sram | T-Type Chainring 34T 104 Bcd Steel Black | Aluminum