Engine

Feature Koyo and Nachi precision Japanese crank bearingsThe crankshaft seals feature a carbon/fluorocarbon pad on the seal lip and stainless steel garter springsReduces startup friction enhancing dry start performance and reducing crank pin wear

Kit includes replacement outer seal along with any O-rings, snap rings or lock washers required

Kit includes replacement outer seal along with any O-rings, snap rings or lock washers required

Forged one piece valves for unmatched strengthCVD/CNI coated to reduce heat and frictionManufactured to exacting tolerances from highest grade materialAll valves sold each

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,...

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...

A quick solution to repairing a leaking counter shaft seal in one complete kitIncludes Hot Rods countershaft seal, countershaft bushing, O-rings, and sprocket nut washer (where applicable)Note: Does not include water pump bearing or transmission bearings.

WE RACE ON THE TRACK, NOT THE DYNO! Most camshaft designs are developed only on a dyno. Good camshaft designs not only increase power, they also improve throttle response. However, more power and better throttle response is a difficult design problem...

The Dirt Tricks Timing Chain Tensioner resolves issues with a slack timing chain on the new 4-stroke motors. The 2008 and newer four-strokes use a timing chain tensioning device intended to develop its force using the engine oil pressure hydraulically...

RAISES COMPRESSION FOR BETTER LOW END POWERGRAPHITE GASKETS FEATURE A STEEL CORE, LAMINATED ON BOTH SIDES WITH FLEXIBLE GRAPHITEFIBER GASKETS DESIGNED FOR MAXIMUM SEAL, FLEXIBILITY AND TORQUE RETENTIONO-RING GASKETS MEET OR EXCEED OEM SPECIFICATIONS