Engine kits include four valves, a complete O.E.M. replacement-style spring kit, steel retainers and keepers, and valve guide seals, where applicable. From Knuckleheads to the latest Twin Cam models, we give you everything you need in one kit. Only one part number to order for a complete cylinder head overhaul. Red 100% Viton valve stem seals are designed to have optimum fitment, allow maximum lift and to give maximum life.

Engine kits include four valves, a complete O.E.M. replacement-style spring kit, steel retainers and keepers, and valve guide seals, where applicable. From Knuckleheads to the latest Twin Cam models, we give you everything you need in one kit. Only one part number to order for a complete cylinder head overhaul. Red 100% Viton valve stem seals are designed to have optimum fitment, allow maximum lift and to give maximum life.