106-2412 Rocker arm & shaft kit, Kucklehead & KN

This S&S rocker arm and shaft kit is a high-quality stock replacement designed for 1940 to 1947 Knucklehead models and all S&S KN-series engines. Maintaining a stock 1:1 rocker ratio, this set is engineered for precision and durability. It is important to note that S&S rocker arms and shafts are designed to work exclusively as a kit; the arms are not compatible with OEM shafts, and the shafts will not fit stock rocker arms. Sold as a set, this kit provides a complete solution for refreshing your top end with S&S reliability. Because these are specialized components, they ensure proper geometry and performance for your vintage Knuckle-style engine.