7/16" Polylock Rocker Arm Nut Set (Suits: Aluminum Rockers) and flame ball-milled finishes

and flame ball-milled finishes

Windsor and Big block applications feature cast construction

Injectors come complete and ready for installation with precision molded o-rings and fine-mesh fuel strainers

Speedmaster rear-end assemblies are the ultimate solution

making it exceptionally lightweight

7/16" Polylock Rocker Arm Nut Set (Suits: Aluminum Rockers) and flame ball-milled finishesSpeedmaster 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