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The S&S CYCLE V124 Long Block Engine is designed for 1984-1999 Evolution Big Twin models and custom chassis setups from 1970 to 1999 with an alternator-style primary. This high-performance engine features specially machined cylinder heads that allow the use of stock-length manifolds, making it compatible with your existing carburetor after re-jetting. It is engineered for easy installation into stock or aftermarket EFI systems, carburetors, or air cleaners, providing versatile upgrade options for your motorcycle. The crank and case are machined to accommodate a crank position sensor, ensuring seamless integration with modern electronic ignition systems. The package includes S&S cylinder heads, valve springs, forged rocker arms, a 640 camshaft, a three-piece flywheel assembly, and a 1.671-inch diameter crankpin with 0.927-inch wristpins, delivering robust performance and durability. Equipped with a high-volume, high-pressure oil pump and electric compression releases, this engine ensures reliable operation and efficient lubrication under demanding conditions. The forged pistons and precision-machined components contribute to enhanced power output and longevity. Manufactured in the USA, the V124 Long Block Engine offers a strong foundation for high-performance builds, but it will require a performance ignition and carburetor to maximize its capabilities. The striking chrome or wrinkle black finish adds a custom aesthetic to your motorcycle, making it a perfect upgrade for riders seeking both style and performance.
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