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Upgrade your Harley-Davidson Evolution Big Twin with the REVOLUTION PERFORMANCE LLC RP201-210W Monster Big Bore Cylinder Kit, designed for optimal performance and durability. Crafted from aerospace-grade all-aluminum with nickel-silicon-carbide (NSC) electroplated bores, these cylinders eliminate the need for sleeving, allowing for larger bore sizes that deliver increased horsepower and engine efficiency. The NSC plating reduces friction, resulting in lower operating temperatures and a longer lifespan for your engine components. This kit includes a pair of all-aluminum, NSC-coated bore cylinders, custom forged pistons with high-tension rings tailored for NSC cylinders, wrist pins, circlips, and a head/base gasket set, providing everything needed for a comprehensive upgrade. Made in the USA, these cylinders are engineered for high performance and reliability, although they require case boring—something not recommended on OEM cases from 1995 or earlier—and may necessitate a 4-5/8 inch stroke crankshaft for optimal fit and function. For enhanced durability, upgraded cylinder studs and head bolts are recommended to withstand increased power outputs. Replacement gasket sets and piston kits are available separately for ongoing maintenance and customization, making this kit a versatile choice for serious performance enthusiasts seeking a significant upgrade to their Harley-Davidson Evolution Big Twin engine.
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US Dollars
