Gorilla Rocker Shafts - Stock Replacment - Twin Cam | Evolution Big Twin | XL

• Procision ground from 4140HT steel, gas nitrided and fianl surface treated
• Over double the strength of factory rocker shafts
• Recommended for all Twin Cam engines and especially for engines running higher lift camshafts and heavier valve spring pressures
• Made in the USA

Manufacturer Part Number: 1235