Standard size replacement. Dimensions: 1.750" head dia. x 0.3765" stem dia. x 3.670" Overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish. Repl. 18081-36.

Standard size replacement with oversized head. Dimensions: 1.630" head dia. x 0.3384" stem dia. x 3.510" overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish.

Standard size replacement with oversized head. Dimensions: 1.812" head dia. x 0.3760" stem dia. x 3.820" Overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish.

Standard size replacement. Dimensions: 1.350" head dia. x 0.3095" stem dia. x 4.640" overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish.

Standard size replacement. Dimensions: 1.565" head dia. x 0.3101" stem dia. x 4.515" overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish.

Standard size replacement. Dimensions: 1.575" head dia. x 0.2758" stem dia. x 4.610" Overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish.

Inconel with a hard chrome finish. Standard size replacement with oversized head. Dimensions: 1.339" head dia. x 0.2342" stem dia. x 4.055" overall length. KPMI valves are manufactured in the U.S.A. by a dedicated staff and personnel with hands-on experience in stock and high performance. Quality materials and the latest CNC and 3-D computer modelling equipment make sure each and every Kibblewhite Precision Machining valve train component is top of the line. Inconel is a special heat resistant so-called ''Superalloy''. By nature of the material it cannot be black nitrided so it is hard chromed. It has a superior heat resistancy against issues like exhaust valve stem bending; of OEM M8 exhaust valves; without impact. 6mm is thin especially when dealing with extremities as detonation; lean mixtures and poor timing curves. Inconel''s superior heat resistance will maintain its strength longer at higher temperatures; it is therefore used for the thin stems on M8 exhaust valves only.