SRAM X-Sync Direct Mount Chain Ring Black (Rival) 38TSRAM: FEATURESSRAM X-SYNC wide-tooth narrow-tooth chainring technology provides maximum chain controlLaser-etched chainring finish is more durableX-Range gearing technology gives you more range and a smoother gear progression so you're always in the right gearImproved aerodynamics for time trial and triathlon (48T/50T) SPECIFICATIONSChainring Size: 38T 40T 42T 44T 46T 48T 50TBolt Circle Diameter (BCD): Direct Mount (DM)Speeds: 12Compat - Yaw: N/AMaterial (Chainring): AluminumColor (Chainring): Black Grey
