5/16" Polylock Rocker Arm Nut Set and outstanding performance for muscle

and outstanding performance for muscle car

finned design that adds a unique look to your engine

These Speedmaster brake conversion kits are the first step to modifying the stock hub and spindle on your early Mustang to aftermarket disc brakes

These valve covers are TIG-welded and are manufactured to help eliminate distortion and ensure a perfect fit to help protect your valve covers and rocker arms

5/16" Polylock Rocker Arm Nut Set and outstanding performance for muscleSpeedmaster rocker arm adjusting nuts are high quality polylocks designed for full roller rocker arms. Made from heat treated, premium grade 4140 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. Precision CNC machined threads to ensure optimum seat pressure, flush machined set screws for proper contact on the studs, and, best of all, they don't require any special tools for installation. They're