Milwaukee Twins 5-Stud Clutch Hub Assembly For Harley This Milwaukee Twins Big Twin Clutch Hub Assembly replaces the stock 3-Stub assembly. This motorcycle clutch hub assembly was designed to offer more strength that the OEM part. The assembly includes rollers with cage, hub liner which is riveted in place, retainer plate with retainer spring and outer plate with nuts. Features: Replaces stock 3-Stud hub Assembly includes rollers with cage, hub liner which is riveted in place, retainer plate with retainer spring and outer plate with nuts Replaces OEM 37550-41Tb