Description
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
