When installing a T.P.P. variable pressure clutch, some 1998→ models 1998-up with 5-bolt derby cover may have clearance problems. This requires removal of the reinforcing ribs on the inside of the derby cover or installation of a special spacer.

When using aftermarket clutches like Barnett Scorpion and Rivera Pro-Clutch with 7/16”-20 adjusters you require this special adjuster screw and locknut.