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Upgrade your Twin Cam engine with the Revolution Performance LLC RP201-135W 131-inch aluminum cylinder kit, featuring aerospace-grade construction for exceptional durability and performance. The all-aluminum cylinders are electroplated with nickel-silicon-carbide (NSC), which significantly reduces friction, resulting in increased horsepower, lower engine temperatures, and a longer lifespan for your engine components. This comprehensive kit includes a pair of NSC-coated cylinders, custom-forged pistons with high-tension rings specifically designed for NSC cylinders, and a head/base gasket set, providing everything needed for a reliable upgrade. Made in the USA, these cylinders are engineered to enhance your engine’s efficiency and power output. Please note that installation will require case boring, which is not recommended on OEM cases from 1995 and earlier, and some kits may need a 4.625-inch stroke crank as specified. The lightweight design and high-quality materials ensure a performance boost suitable for demanding riding conditions and custom builds alike.
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