Sram's light, stiff, and durable direct mount chainrings let you pick the exact gearing you want and quickly swap sizes. Sram's X-SYNC technology keeps the chain where you need it to be, too. Features X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control. Laser-etched chainring finish is more durable. X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear. Improved aerodynamics for time trial and triathlon. Specifications Bolt Circle Diameter (BCD): Direct Mount (DM). Speeds: 12. Material (Chainring): Aluminum.
Best Price: £119.95 from Merlin Cycles