The Hope Oval Retainer Ring. Our Oval Retainer Chainring has a narrow/wide tooth configuration designed for 1x10 and 1x11 set-ups without the need of a chain guide. Hope Oval Retainer Ring Features 12% Ovality and 113 deg clocking Quieter drivetrain and less drag CNC machined 7075-T6 aluminium provides the perfect blend of lightweight and strength Compatible with 9spd, 10spd and 11spd set-ups The narrow/wide chainring is designed to retain the chain without the need of a chain device More info
