Engine

Race proven worldwideImproves heat dissipationStronger than stockPrecision machined from billet T-6 aircraft quality aluminum to aerospace tolerances

Race proven worldwideImproves heat dissipationStronger than stockPrecision machined from billet T-6 aircraft quality aluminum to aerospace tolerances

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

2-Piece Cast Aluminum ConstructionOil Filter Access for Hassle Free Filter ChangesIncreased Coolant Flow at all RPM RangesPatented Nautilus Style Impeller for Hydrodynamic Efficiency

Cast from the highest quality aluminumSeals perfectly to keep out dirt and moistureCovers come with gasketsHolds clutch cable more securely (Yamaha YZ models)Give your bike the factory "WORKS" lookCover gaskets may be used with stock or factory covers

Cast from the highest quality aluminumCovers come with the gasketsSeals perfectly to keep out dirt and moistureGives your bike the factory “WORKS” look

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

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

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