Maximum Power, Effortless Start: S&S Cycle 585 Easy Start Cam Kit for Harley Twin Cam (2006–2017)

The S&S Cycle 585 Easy Start Cam Kit represents the zenith of high-performance, bolt-in camshaft upgrades for the later-model Harley-Davidson Twin Cam engines (2006–2017). This is not a mild upgrade; the 585 cam is engineered to deliver maximum power, excelling in both high-flow and big bore applications (like the S&S 106″, 110″, or 124″ kits), while solving the common issue of high-compression engines struggling to crank over.

The inclusion of the patented Easy Start compression release feature makes the S&S 585 the premier choice for riders seeking an aggressive, race-ready power profile without sacrificing the convenience of push-button starting.
Aggressive Performance with Ultimate Convenience

The S&S 585 grind is a high-lift, high-duration cam designed to fully utilize the potential of modified cylinder heads and increased displacement. Its power delivery is focused on the mid-to-high RPM range, making it ideal for performance-minded riders and heavy bikes.
The Easy Start Advantage

The patented S&S Twin Cam Easy Start Cams solve the issue inherent in high-performance engines. When you significantly increase the compression ratio (necessary for maximum power), the starter motor often struggles to turn the engine over, leading to grinding, battery strain, and eventual failure.

The Easy Start system works automatically:

Release: A centrifugal mechanism built into the cam lobe holds the exhaust valve open slightly during cranking, relieving approximately 50% of the cylinder pressure.

Crank: This allows the stock starter to turn the engine over easily, even with extremely high static compression.

Run: Once the engine fires, the centrifugal weight retracts, allowing the cam to function normally with full compression.

This ingenious technology provides the perfect blend of maximum compression for performance and effortless starts, making the S&S 585 Easy Start Cam Kit a must-have for any serious High Compression Twin Cam Camshaft build.
Installation and Supporting Modifications

The S&S 585 Cam is technically bolt-in for the 2006-2017 hydraulic tensioner models in terms of fitting the cam chest, but its high lift requires careful attention to the valvetrain.
Valvetrain Requirements

Due to the aggressive 0.585″ lift, heavy-duty valve springs are highly recommended, and often mandatory (especially if the heads have not been machined or if performance heads are used) to prevent valve float at high RPMs. Pushrod replacement with adjustable units is also necessary to correctly set the required lifter preload.

This Product Fits

Harley Davidson
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Softail Rocker FXCW 2008, 2009, 2010, 2011
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