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The KB Performance Piston Kit, part number KB426C.STD, is engineered for high-performance applications on 88 inch Twin Cam engines. Crafted from high-strength, T-5 heat-treated 390 hypereutectic aluminum alloy, these pistons provide a durable, lightweight solution designed to withstand the rigors of aggressive riding. The precision-machined surface ensures a tight fit, promoting longer piston and ring life while reducing piston rock for improved ring seal and engine efficiency. Each piston is held to strict manufacturing tolerances, with weight variations less than one gram and dimensional precision within half a thousandth of an inch, ensuring optimal balance and performance.
This kit includes two pistons, pins, spiral-lock pin clips, and Hastings moly rings (replacement rings sold separately). The design allows for tighter installation than typical pistons, which enhances ring sealing and overall engine compression. Due to the heat conductivity and specific design features of KB pistons, particular attention must be paid to the top ring end gap during installation; detailed instructions are provided to ensure correct ring installation and optimal performance. Proper piston clearance and ring gap are critical for preventing engine damage and achieving the desired power output.
Designed for easy installation and reliable performance, these pistons are ideal for enthusiasts seeking to maximize their engine's potential. The combination of advanced materials and precise manufacturing makes the KB Performance Piston Kit a suitable upgrade for high-performance Twin Cam engines, providing improved durability, efficiency, and power output in demanding riding conditions. Always follow the manufacturer's guidelines for installation and ring gap adjustments to ensure the best results and longevity of your engine components.
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