The snubber ensures that the Gates belt remains securely in place on the sprocket and prevents it from slipping or skipping. Skipping the belt can damage the inner carbon structure, potentially causing damage to the belt during riding.
Options for either Quick Release Axle or Rear Mech dropout mounting
QR Axle Mounted - CHGTECDQ
Rear Mech Mounted - CHGTECDR
Rear Mech Mounted 28-39T Sprockets - CHGTECDRL