90-2210 Cast iron valve guide in/ex. STD

This standard size S&S cast iron valve guide is a versatile replacement part for a wide range of Harley-Davidson engines. It fits 1984 to 1999 Evolution Big Twins, 1999 to 2004 Twin Cams, and 1986 to 2003 Sportster models, as well as all S&S V-style and T-style SuperStock cylinder heads. The guide is supplied with an internal diameter of approximately .309 to .310 inches, leaving just enough material for a final hone to achieve the perfect clearance for your valves. It serves as a high-quality alternative to OEM part number 18112-92. Using cast iron ensures excellent wear resistance and compatibility with various valve stem materials in both intake and exhaust positions.