90-2249 Cast iron valve guide in/ex. +.060"

This S&S cast iron valve guide is a massive .060-inch oversize, providing plenty of material for a machinist to achieve the perfect fit in heavily worn or modified heads. It is designed as a stock replacement for all S&S SH-series Shovelhead-style and KN-series Knucklehead-style engines, and it also fits late 1979 to 1984 OEM Shovelhead models. Whether you are refreshing a set of S&S SuperStock heads or rebuilding a classic factory top end, these guides offer the durability and heat dissipation characteristics that only high-quality cast iron can provide. Because of the significant oversize, these must be machined to the correct final dimensions for your specific valve stems and head bores.