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The S&S CYCLE 106-5859 camshaft kit is engineered for optimal performance and ease of starting in Harley-Davidson Big Twin models from 1999 to 2006, excluding the '06 Dyna. Featuring a unique compression release mechanism, this camshaft allows for effortless engine startups by temporarily reducing crank compression during ignition. Once the engine reaches higher RPMs, the centrifugally actuated compression release lobe retracts automatically, restoring full compression and ensuring smooth, uninterrupted performance without sacrificing power or efficiency. This design makes it an ideal choice for riders seeking reliable starting performance combined with strong low-end torque and horsepower. The camshaft is optimized for models with softail and dyna configurations but can be adapted for use in any Big Twin engine. It delivers peak torque between 1,500 and 5,000 RPM, making it particularly effective for street riding and cruising applications. The kit includes all necessary components for installation, such as camshafts, gear cover gasket, bearings, retaining ring, O-ring, thread lock, and detailed instructions. Crafted in the USA, this bolt-in upgrade provides a straightforward installation process for experienced technicians. Proper clearance checks, including coil bind, valve-to-valve, and valve-to-piston, are essential prior to installation to ensure optimal operation. Please note that this camshaft is not suitable for models equipped with OEM compression releases or those with compression ratios of 10.0:1 or higher, to prevent potential mechanical interference or performance issues. Designed to improve low-end torque and overall engine responsiveness, the S&S CYCLE Easy Start camshaft kit offers a reliable upgrade for Harley-Davidson enthusiasts seeking a balance of power and ease of starting in their Big Twin motorcycle.
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