Description
Superior chain retention "Special MTB chainring tooth profile improves chain engagement and retentionDYNAMIC CHAIN ENGAGEMENT+ (dynamic chain engagement)Rigid, lightweight design for aggressive trail riding "Hollow forged crank for maximized power transfer while limiting weightHOLLOWTECH IIFactor Q: 178 mmChain line: 55 mmWeight: 616 g (28 dts), 630 g (30 dts), 628 g (32 dts), 642 g (34 dts), 660 g (36 dts)