Engine

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...

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...

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

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

BBR Hd Valve Springs 411-Hcf-1504

Athena Power Valve Yam S410485303018

Athena Cylinder Head 44.5Mm Kaw S410250308001

Patented fork seal features a balanced 3 lip design that evenly distributes the pressure reducing operating temperature, wear and frictionCustom Elastomer Fork Seals have been tested to outlast OEM fork seals. Extends typical seal life by 3 to 5 times...

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

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