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

CNC machined engine plugsReplaces stock plugs to give a factory bike lookLaser printed ZETA logo

CNC machined front sprocket cover.Designed to keep mud out of the front sprocket areaMade of A7009-T6 aluminum.

CNC machined from 6061 T-6 aluminumReplaces the stock plastic plugSealing O-ring includedLaser Engraved WC logoMade in the USA

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

Includes inner clutch cover gasket, water pump cover gasket and all bearings, seals and washers required to rebuild water pumpMechanical seal included!Meets or exceeds OEM quality

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...

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...

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...

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...

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,...