Clutch Boss Nut Retainer Yamaha FJ1200 XJ1250
One Genuine Yamaha clutch nut boss retainer for FJ1200 / XJ1250.
We replace this piece with every clutch replacement that we do. If one of the tabs break off, the nut will back off, causing the oil pump to become disengaged from the clutch assembly resulting in oil starvation and a blown engine.
An ounce of prevention is worth a pound of cure