Designed for DH riding, the TRP CR-M8070 chainring is crafted with high quality CNC machined 7075-T6 aluminum and features Wave Technology for proven chain retention in extreme conditions. CNC machined using 7075-T6 aluminum provides strength and incredible durability Torsionally rigid for exceptional power transfer Wave Technology(TM) offers proven chain retention in the most extremely conditions 6mm offset for boosted DH setups Specifications Chainring BCDDirect Mount CINCHColorSandblasted BlackDefined ColorBlackDirect Mount TypeDirect Mount CINCHDrivetrain Speeds7MaterialAluminumOffset6Ring Position/TypeChain Retaining Single RingRound or OvalRoundTooth Count34