rear hub clutchOur editors are putting together more complete content — check back in about 20 minutesrear hub clutchrear hub clutch — noun名詞1. A mechanism in a bicycle rear hub that engages when pedaling and freewheels when1.名詞釋義A mechanism in a bicycle rear hub that engages when pedaling and freewheels when coasting.例句The rear hub clutch allows the bike to coast without pedaling.