MTB 7/8/9/10 Speed Freehub Body for Shimano RM30/RM40/RM60 Key benefits Durable steel construction for long lasting performance on mountain bike rides Specifically designed for Shimano RM30 RM40 RM60 hubs for reliable fit and operation Supports 7 speed and 8/9/10 speed configurations for flexible gearing options Easy to install on compatible hubs with clear size specifications for a smooth replacement What this offers Function: Restores smooth shifting and reliable engagement when replacing a worn freehub Compatibility: Fits Shimano RM30 RM40 RM60 hubs exactly as intended Size and performance: Available in 7 speed and 8/9/10 speed configurations to match your cassette Material: steel for strength and durability 23 practical use scenarios Scenario 1: Replacing a worn or damaged freehub on a Shimano RM30 RM40 RM60 wheelset to restore reliable shifting on mountain trails Scenario 2: Upgrading an older RM30 RM40 RM60 hub to support newer 8/9/10speed cassettes for expanded gearing options Scenario 3: Building or maintaining a versatile MTB wheelset that can accommodate different gear ranges without changing hubs Installation notes Designed for compatibility with Shimano RM30 RM40 RM60 hubs Install using the provided size specifications for a straightforward, hassle process