KIT ROCKER SHAFT/STUD M8

Precision ground from 4140HT steel Made in the USA Recommended for all M-Eight engines and especially for engines running higher lift camshafts and heavier valve spring pressures Gas nitrated and final surface treated 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 Over double the strength of factory rocker shafts Designed with strength in mind