Engine

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Stock-height long-block replacement for Evolution engines. Includes performance heads, pistons, valve springs and a 508 camshaft. EFI compatible; fuel/ignition sold separately.
Durable Bolt-In Valve Stem with metal bottom and rubber seal for optimal performance.
High-quality replacement parts for valve stem kits to ensure optimal motorcycle performance.
High-quality replacement parts for valve stem kits to ensure optimal motorcycle performance.
Carbureted V80 assembled engine that fits stock '84–'99 Evolution Big Twin frames; upgraded S&S carburetor, cam, heads, and single-fire ignition.
Bolt-on performance kit with bolt-in cams and premium tappets. Easy installation with no machining or rebalancing. Uses stock heads, pushrods, and fuel system.
Complete bolt-on big-bore kit that raises displacement without case machining. Includes cylinders, forged pistons, upgraded oil pump/cam plate, valvetrain hardware, and all gaskets and bearings for installation.