TRP CR-M8070 Boost Direct Mount Chainring - 32t 7-Speed DH CINCH Mount 6mm Offset 7075-T6 Aluminum Sandblasted BLKTRP CR M8070 Boost Direct Mount Chainring 32t 7 Speed DH CINCH Mount 6mm Offset 7075 T6 Aluminum Sandblasted Black. 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 offers