Engine Roller Rocker Arm Set; 1.6 Ratio 3/8 Stud; HD Aluminum ; Fits SB Chevy

Designed for up to 10,000 RPM. This heavy duty design features an oversized body and fulcrum with a triangulated profile for additional rigidity and strength. Accommodates most oversized valve springs. American-made roller bearings are in self-contained bearing-cups for extra low friction wear. Each set includes 16 extruded aluminum roller rockers and 16 poly locks.