SHAFTS ROCKER M8 SET

Designed with strength in mind Over double the strength of factory rocker shafts Custom tooling was created to provide a countersink relief for the bolt/nut head versus machining away the entire end of the shaft per the factory design Gas nitrated and final surface treated Recommended for all M-Eight engines and especially for engines running higher lift camshafts and heavier valve spring pressures Made in the USA Precision ground from 4140HT steel