Standard size replacement. Dimensions: 1.615" head dia. x .3095" stem dia. Standard overall length. Severe Duty valves. Proven quality over many years. Manufactured from high temperature stainless alloy to a perfect finish. Manley valves feature swirl polished; performance orientated shapes and durable chrome plated stems. Up to 30% weight reduction over stock components. Manley''s ''Severe Duty'' valves insure a stable valve train; even at high R.P.M.''s. Note: Evo Big Twin intake valves are identical to 99-04 Twin Cam valves. Evo exhaust valves are 1.615"; Twin Cam 1.565" in diameter. Length is identical. 1.615" valves can be installed on stock seats of Twin Cam models; after valve seat machining. Information supplied by Manley Performance Products; Inc.

Standard size replacement with oversized head. Dimensions: 1.65" head dia. x 0.3095" stem dia. Standard overall length. Severe Duty valves. Proven quality over many years. Manufactured from high temperature stainless alloy to a perfect finish. Manley valves feature swirl polished; performance orientated shapes and durable chrome plated stems. Up to 30% weight reduction over stock components. Manley''s ''Severe Duty'' valves insure a stable valve train; even at high R.P.M.''s. Note: Evo Big Twin intake valves are identical to 99-04 Twin Cam valves. Evo exhaust valves are 1.615"; Twin Cam 1.565" in diameter. Length is identical. 1.615" valves can be installed on stock seats of Twin Cam models; after valve seat machining. Information supplied by Manley Performance Products; Inc.

Quality replacement valves; lower priced than the Manley ''Severe Duty'' valves. Still offering a significant improvement over the OEM valve. Stainless steel construction with chrome plated stem and hardened tips. Excellent stock overhaul valve. Race Master valves are manufactured of stainless XH-426 for exhaust and stainless NK-842 for intake and offer great ultimate tensile strength; combining superior quality at a competative price. Okay for stock or racing upto 8000 RPM.