- Oval shape for greater climbing power and improved rear traction - 7075-T6 aluminum direct mount ring to fit Race Face Cinch system splined cranks - Narrow-wide teeth prevent chain drop, updated tooth profile runs quieter - Compatible with 9-12 speed chains, allowing a 1X set up on most any drivetrain - 52mm chainline for 148mm rear spacing - Installs with a common Park Tool BBT-22
