The Absolute Black premium 1X RaceFace direct-mount oval chainring is designed explicitly for the RaceFace CINCH system, which allows the chainring to mount directly to the crank. This model is designed for Shimano chains and is compatible only with XTR CN-M9100, Deore XT CN-M8100, and SLX CN-M7100 Hyperglide+ 12-speed chains, as it features unique tooth thickness and shaping. This model is intended for Boost bikes and can also be used on fat bikes when mounted in reverse. Features: Oval design promotes a smoother and more efficient pedal stroke A 32T ring functions like a 30T at the dead spot and a 34T in the power zone Narrow-wide tooth profile ensures secure chain retention, eliminating the need for a chain guide Fits Race Face cranks with the Cinch mounting system 3mm offset for Boost-spaced frames, 148mm Compatible with Shimano 12-speed CN-M9100, CN-M8100, and CN-M7100 chains Designed in the UK and precision-manufactured in Poland