SHIMANO Unisex’s SMCRM81A4 Bike Parts， Other， One Size

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Shimano sm-crm81 single chaining for XT M8000, 34T

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 hollow gear Construction for optimized rigidity, lightweight and durability durable teeth using a plated steel construction supported by a carbon composite (CFRP) carrier body dyna-sys11 hg-x11 11-speed chain compatible available in 30T/32T/34T.