S&S Cycle 551-1585 High Performance Chain Drive Camshaft Kit for Harley Twin Cam

The S&S Cycle 551-1585 is a high-performance chain drive camshaft kit engineered to deliver substantial torque improvements for Harley-Davidson Twin Cam engines. This bolt-in camshaft features 0.551-inch valve lift and is specifically designed for 96 to 106 cubic inch displacement engines with compression ratios between 9:1 and 9.9:1.

Key Features:

• 0.551-inch lift camshaft optimized for low-end and midrange torque delivery
• Strongest performance from idle to 4000 RPM range, ideal for touring applications
• Bolt-in design for stock or mildly modified touring motorcycles
• Chain drive configuration maintains stock drivetrain compatibility
• Complete kit includes camshafts, gaskets, bearings, and installation instructions
• Designed for engines with 96-106 CID and 9:1 to 9.9:1 compression ratios
• Compatible with stock valve springs in most applications

This camshaft kit dramatically improves throttle response and low-to-midrange power without sacrificing reliability or requiring extensive engine modifications. The 551 series cam is an excellent choice for riders seeking better acceleration and pulling power for two-up riding or heavy touring bikes. Note that 551 cams are not recommended for engines with compression ratios of 10:1 or higher.