Big Fix Clutch Hub Bearing

The “Big Fix” kit replaces the original caged roller bearing of the clutch basket on Harley-Davidson four-speed Big Twins (1000, 1200 and 1340 cc, model years 1941 to early 1984). This quadruples the bearing’s load surface. Worn bearing surfaces on the clutch hub and basket are a thing of the past. Using the bearing retainer plate included in the kit and the three snap rings, the bearing play is adjusted — a function originally performed by three conical springs (37574-44) and a steel plate (37576-41). Three different positions are available for adjustment. Thanks to the wider bearing surface, the clutch basket also wobbles less when the clutch is disengaged. Proper bearing play adjustment is only possible with clutch hubs that feature three threaded studs.