Engine

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

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

3D CAD design for increased flow ratesSub-surface anodized finishLightweight and durableCNC machined 6061-T6 billet aluminumPrecision fit, available for most modelsExceeds all OEM specifications

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...

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...

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...

Colored Silicone hosesColor matched carb hosesColor matched fuel lineColor matched coolant overflow hoseY-hose kits eliminate OEM plastic Y-fitting for increased coolant flow

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...

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...

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...