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Upgrade your Harley Davidson Big Twin engine with the KB Performance Piston Kit, part number KB263.060. Crafted from high-strength T-5 heat-treated 390 hypereutectic aluminum alloy, these pistons are engineered for durability and optimal performance. The precision diamond-machined pistons are held to strict tolerances of less than half a thousandth of an inch, ensuring a tight fit that enhances ring seal and reduces piston rock. This tight fit not only extends piston and ring life but also contributes to more efficient combustion and power output. Each kit includes two pistons, pins, spiral-lock pin clips, and Hastings moly rings, providing everything needed for a complete installation. Replacement rings and pin lock rings are available separately for ongoing maintenance or upgrades. KB pistons can be installed tighter than standard pistons, which results in less piston movement and a more effective seal, helping your engine run smoother and more reliably. Due to the thermal conductivity and design of KB pistons, special attention must be paid to the top ring end gap during installation. Proper ring gap ensures optimal performance and longevity, so be sure to follow the included instructions carefully. Designed for a 9.0:1 compression ratio, this kit is ideal for riders seeking improved power and efficiency while maintaining engine reliability. Whether rebuilding or customizing your Harley Big Twin, the KB Performance Piston Kit offers proven quality and performance to meet demanding motorcycle applications.
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