shimano sm-crm75 slx m7100/m7130 30t single chainring

Dynamic chain engagement (dce) is used to hold the chain and help prevent chain jump out. This is achieved by using a broader and taller tooth profile in conjunction with a special hooked leading edge and alternate profiled tooth shaping. This provides superior chain retention, lower driving sound, increased durability and drag to a minimum.Features:Durable teeth using a plated steel construction supported by a composite carrier bodyHG 12-speed chain compatibleAvailable in 30t/32t/34t