EXCESS EFW-S FREEWHEEL Product Overview The Excess EFW-S Freewheel is a BMX racing freewheel designed for standard threaded hubs. It provides reliable coasting function for single-speed racing applications. Key Features Threaded freewheel design - Screws directly onto threaded freewheel hubs; traditional freewheel mechanism allows coasting when not pedaling Single-speed compatible - Designed for BMX racing drivetrains with one gear ratio Technical Specifications Type: Threaded freewheel Application: BMX racing, single-speed Compatibility and Ideal Use Cases This freewheel is compatible with rear hubs that use threaded freewheel mounting (standard thread pattern). Not compatible with cassette hubs, freehub bodies, or fixed-gear setups. Cassette hubs require cassette cogs, not threaded freewheels. Ideal for riders using traditional threaded freewheel hubs who need a replacement freewheel for racing. Works with standard BMX chains and cogs. The threaded design allows for easy installation and removal with a freewheel removal tool.