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Upgrade your Harley Davidson Evolution Big Twin engine with the Revolution Performance LLC Monster Big Bore Cylinder Kit, designed specifically for 1984 to 1999 models. Crafted from aerospace-grade all-aluminum, these cylinders feature nickel-silicon-carbide (NSC) electroplated bores, which eliminate the need for sleeving and allow for larger bore sizes. The NSC plating reduces friction, resulting in increased horsepower, lower engine temperatures, and a longer engine lifespan. This comprehensive 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 a complete upgrade for your engine.
Manufactured in the USA, these cylinders require case boring, which is not recommended for OEM cases from 1995 or earlier, and some installations may necessitate a 4-5/8-inch stroke crank. To ensure reliability and performance, upgraded cylinder studs and head bolts are recommended. The kit is compatible with various engine configurations, and replacement gasket sets and piston kits are available separately for future maintenance or upgrades.
Designed for enthusiasts seeking increased power and durability, the Revolution Performance LLC Monster Big Bore Cylinder Kit offers a significant boost over stock components. Its high-quality construction and precision engineering make it an ideal choice for performance rebuilds and custom applications. Whether you're restoring a vintage Harley or building a high-performance engine, this kit provides the robust foundation needed for reliable and powerful operation.
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