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...

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...

Manufactured by the leading OEM factoriesMade to exact OEM specifications to offer maximum performance and durabilityComplete bearing and seal kit per application for easy replacementCan be used in combination with all other ProX or OEM crankshaft...

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

Each water pump assembly has been CNC-machined from billet aluminum and is color anodized. The Pro Circuit Water Pump Impeller has been designed to increase the pumping capacity and pressure head to reduce cavitation and increase cooling system...

Direct replacement for the OEM cover and will definitely offer a factory lookCNC-machined from aircraft quality aluminum for strength and durability then anodized for surface hardness and reduced normal wearThis part is a must-have for any KLX110/L rider...

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...

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...

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...

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...