S&S CYCLE Cam with Plate - 551 Series - Easy Start 330-0542

Stock cam systems on Harley-Davidson engines are vulnerable to chain stretch, timing degradation, and premature wear—especially under high-RPM riding conditions. The S&S Cycle 551 Series Easy Start replaces the entire valve train with precision-engineered, U.S.-made components that deliver measurable gains in lift and timing optimization. This bolt-in upgrade eliminates guesswork and delivers the reliability expected from a market-leading performance brand.

Installation is straightforward with S&S Quickee pushrods, allowing you to complete the swap without removing rocker covers. Whether you choose the gear-drive or chain-drive configuration, you're investing in a proven system that addresses the weak points of stock Harley powerplants.

• Bolt-in installation
• Higher valve lift
• Optimized cam timing
• S&S Quickee pushrods included
• Replaces stock cams, chain tensioners, tappets
• Premium U.S.-made components
• Hydraulic cam chain tensioners (chain-drive)
• Gear-drive option available
• No rocker cover removal needed
• MPN: 330-0542