- Replacement freehub bodies for Bitex hubs - Equipped with steel cartridge bearings - Mountain (54t) freehub bodies are compatible Bitex MTB hubs, Including BX214R, BX211R, BX211R-E, BX212R, and MTR12 - Road freehub bodies are compatible with all Bitex road hubs, including ABX106R and RAR12 - HG cassette bodies feature Gouge Guard, 3x stainless splines that prevent the cassette from digging into the body - Micro Spline freehub bodies (BI4502/BI4515) will need BI4520 if converting from HG, Campagnolo, or XD/XDR driver bodies