The SRAM XX Eagle T-Type Ochain Chainring is a chainring built specifically to mate with Ochain's spider design, not a standard direct-mount ring. It pairs with SRAM's T-Type Transmission chains and remains compatible with Eagle X-SYNC II and SRAM DH drivetrains, so a build already running Ochain's pivot system gets a direct upgrade path instead of a workaround. E-MTB-rated construction handles the sustained torque of pedal-assist power on top of standard trail riding. What Our Gearhead(R) Experts Are Saying:"I don't have to source Ochain spacers separately or guess at sizing, since the right ones are already in the box. That's one less trip to the shop before the ride."