ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-38 1 2 3 4 5 6 7 8 9 10 11 CONTENTS REFERENCE GENERAL EXHAUST FUEL DRIVE TRAIN ENGINE WHEEL CONTROL FRONT END FRAME ELECTRICAL Valve Kits VALVE KITS FOR SPORTSTER 61003 61007 61008 61009 61002 Description # Pieces Part # Fits 1957/1969 Sportster 4 61002 Fits 1970/1983 Sportster 4 61003 Fits 1986/2003 EVO Sportster 883cc 4 61007 Fits 1988/2003 EVO Sportster 1200cc 4 61008 Fits 2004/2021 EVO Sportster 1200cc 4 61009 1957/1969 Ironhead Sportster Valves Black Diamond™ forgings from 21-4N (EV8) high temp valve steel. 2 Int. 1.825” x 0.3090” x 3.562” / 2 Ex. 1.570” x 0.3384” x 3.512” 1986/2003 883cc Evo Style Sportster Valves Black Diamond™ forgings from 21-4N (EV8) high temp valve steel. 2 Int. 1.585” x 0.310” x 4.550” / 2 Ex. 1.350” x 0.3095” x 4.640” 1970/1983 Ironhead Sportster Valves Black Diamond™ forgings from 21-4N (EV8) high temp valve steel. 2 Int. 1.935” x 0.3090” x 3.620” / 2 Ex. 1.570” x 0.3384” x 3.512” 1988/2003 1200cc Evo Style Sportster Valves Black Diamond™ forgings from 21-4N (EV8) high temp valve steel. 2 Int. 1.715” x 0.310” x 4.480” / 2 Ex. 1.480” x 0.3096” x 4.560” 2004/2021 1200cc Evo Style Sportster Valves Black Diamond™ forgings from 21-4N (EV8) high temp valve steel. 2 Int. 1.805” x 0.2760” x 4.525” / 2 Ex. 1.575” x 0.2755” x 4.610” Valve Descriptions Black Diamond™ Valves - The Black Diamond™ process is a multi-stage heat treat, polishing, and oxiding process that creates a hard smooth surface with an extremely low coefficient of friction that is easy on valve guides. It Improves fatigue strength, corrosion resistance, and leaves a ductile core. Valves are designed using the latest Finite Element Analysis (FEA) software to make sure there is adequate cross sectional area where the greatest stresses occur. Stellite is welded to the tips to resist impact and abrasive wear from rockers. White Diamond™ Valves for M8 - White Diamond™ valve stems are hard chrome plated using a 360° anode to insure uniform hard chrome thickness. Rigorous monitoring of the chrome bath is performed to insure purity, and tight tolerances are held on the surface preparation and surface finish of the valve. Valves are designed using the latest Finite Element Analysis (FEA) software to make sure there is adequate cross sectional area where the greatest stresses occur. The keeper groove and tip areas are induction hardened to prevent wear.
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