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The KB Performance Piston Kit, part number KB272.010, is engineered for high-performance motorcycle applications, specifically designed for XL883 to 1200 engine conversions. Crafted from a high-strength, T-5 heat-treated 390 hypereutectic aluminum alloy, this piston kit offers exceptional durability and thermal resistance for demanding riding conditions. The advanced material composition provides a tighter fit, resulting in improved piston and ring longevity, ensuring reliable performance over time. Each piston is diamond-machined to strict tolerances, with a weight difference of less than one gram and precision within half a thousandth of an inch, guaranteeing smooth operation and minimal vibration. The kit includes two pistons, pins, spiral-lock pin clips, and Hastings moly rings (rings sold separately), making it a comprehensive upgrade for your engine. Thanks to KB pistons' ability to be installed tighter than conventional options, users benefit from reduced piston rock and enhanced ring seal, translating to better compression and power output. Proper installation, including correct piston clearance and ring end gap, is critical for optimal performance; detailed instructions are included to guide the process. Due to the unique thermal conductivity and design of KB pistons, special attention should be paid to the top ring end gap during installation to prevent potential issues. This piston kit is an ideal choice for enthusiasts seeking increased horsepower, durability, and efficiency in their motorcycle engine rebuilds or upgrades.
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