Manley, Severe Duty stainless valves, exhaust. Conversion

86-03 XL883 (NU). For full 883-1200 conversion benefits

Used for 883-1200 conversion. Valve length is same as stock 883 Sportster, valve head diameter is same as stock (larger) 1200cc Sportster models. This improves breathing so you can achieve full benefits from the 883 - 1200 conversion. Dimensions: 1.48" 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.