Engine

All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston lifeCast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light...

Convenient one stop shop in a box! Nearly all components required for a complete and professional rebuild.Vertex Piston Kit (standard compression piston, rings, pin and clips)Hot Rods Heavy Duty crank (stock stroke - includes wrist pin bearing for two...

Twin Air is proud to announce our latest product, the Twin Air Radiator Sleeve. This new product is a nylon coated, glass yarn material that fits over the radiator louvers so no dirt, sand, or mud can stick to the radiator, clogging the radiator,...

Twin Air is proud to announce our latest product, the Twin Air Radiator Sleeve. This new product is a nylon coated, glass yarn material that fits over the radiator louvers so no dirt, sand, or mud can stick to the radiator, clogging the radiator,...

CNC machined from billet aluminumReplaces factory automatic/hydraulic tensionerStops out of timing issues and timing chain rattling caused by automatic tensioner failureEliminate timing chain over-tension/premature engine wear caused by hydraulic...

Latest addition to the ProX program is the Steel Intake and Exhaust Valve & Spring Kits. This kit is offered as an alternative where the OEM application uses Titanium valves. ProX has now developed the Steel Intake and Exhaust Valve & Spring Kits,...

PRO-X connecting rod kits are made out of the toughest alloys available todayO.E. specifications and tolerances are meticulously maintainedComes with crankpin, big-end bearing, small-end bearing, and washers

Perfect fit to the stock water pumpImpact resistant PA6 plastic offers optimum protection against rocks and impactsEasy and intuitive installationAll mounting hardware is included.Slim design to minimize interference with the rider’s boots.Resistance to...

Perfect fit to the stock water pumpImpact resistant PA6 plastic offers optimum protection against rocks and impactsEasy and intuitive installationAll mounting hardware is included.Slim design to minimize interference with the rider’s boots.Resistance to...

These materials have proven heat and corrosion resistance properties. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Strict attention is paid to the surface preparation of the...

KPMI® valve springs are wound from Premium Kobe Super-Clean Chrome Silicon Wire. KPMI® valve springs are heat-treated, stress relieved, and shot peened to insure maximum performance and life. Springs are engineered for each specific application using...

We choose to use C630 nickel bronze as a material to make valve guides because of its ideal characteristics for the application. The 5 percent nickel content provides superior resistance to wear, and the 80 percent copper content delivers outstanding...