Engine

KPMI Red Viton® valve stem seals are designed to have optimum fitment, allow for maximum lift, and to give maximum life. KPMI Red valve stem seals are resistant to high temperatures, petroleum products and by-products of combustion. They retain their...

Our bronze rocker bushing material meets the high standards we set for successKPMI® tested and analyzed several bearing-bronze materials for anti friction qualities, hardness, and resistance to deformation under high loadsKPMI® Rocker arm bushings are...

Includes 2 bushings and 1 sealFits '66-83 Shovelhead modelsMade in the USA!

KPMI® Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets proof-stress and maximizes clamping force, look no further. KPMI® “rolls” the threads, heat treats and then...

Kpmi Guide Intake +0.001 Cast Iron Hd Sportster 57-83 20-2321C

Kpmi Guide In / Ex Std. Bronze Hd Evolution 87-99 20-4320

Kpmi Guide Ex Std Cast Iron Hd Sportster 57-83 20-2330C

Kpmi Guide Ex +0.003 Cast Iron Hd Pan 48-65 & Shovel 66-77 20-2033C

Kpmi Guide Ex +0.002 Cast Iron Hd Sportster 57-83 20-2332C

Cylinder alignment dowels are machined from steel and receive a black oxide surface treatmentOEM Cylinder Alignment Dowels are often galled and distorted when removed during a top end jobQuick, clean, easy, and accurate reassembly

KPMI® Compression release valves are state of the artDesigned to reduce “hot start” issues and starter/battery loads5-7 Newton’s of closing force resistance, for high demand applicationsCustom molded knobs ensure a cool touch and easy operationEmbossed...

All KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process improves wear properties, reduces friction, and provides resistance to...