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This comprehensive KIBBLEWHITE top end rebuild kit is designed to restore and enhance the performance of Yamaha WR450F and YZ450F models. The kit includes high-quality pistons, piston rings, piston pins, gaskets, valves, and valve springs, providing all essential components for a complete top-end service. The pistons are fully machined from 2618 aluminum alloy, offering durability and strength, with a performance skirt coating to reduce friction and wear. The lightweight racing valve spring kit features titanium valve spring retainers, dual springs, and H.T. steel base washers, making it suitable for high-performance camshaft applications. All necessary gaskets, seals, and O-rings are included, ensuring a seamless installation. The pistons, rings, valves, and pin clips are engineered to work as a system, providing compatibility and optimal performance. Please note that this kit is not compatible with OEM components, emphasizing its performance-oriented design for racing and high-performance use.
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