S&S CYCLE 551 Easy Start Camshaft Kit — 551 Series, chain – 06-16 Dyna, 03, 07-16 Touring, 07-15 CVO, 10-16 Trike, 07-16 Softail

Make starting effortless without sacrificing performance. The 551 Easy Start Camshaft Kit reduces crank compression momentarily for easier cranking; once the engine fires and rpm rises, the compression-release lobe retracts centrifugally so the engine runs with full compression and no loss in power. 🏍️

Designed to work especially well on 88"/96"/103" to 106" Touring bikes fitted with slip-on mufflers and compression ratios from 9.0:1 to 9.9:1, this bolt-in kit greatly improves low-end and midrange torque and is strongest from idle to 4,000 rpm.

• Simple bolt-in installation for stock or mildly modified Touring models.
• Delivers noticeable improvement to starting effort and rideability in the most commonly used rpm range.
• Includes camshafts, gearcover gasket, bearings, retaining ring, o-ring, thread lock and instructions.
• Made in the USA.

Important: Not recommended for compression ratios of 10.0:1 or greater. Installer must check coil bind, valve-to-valve clearance and valve-to-piston clearance. Not for models with OEM compression releases. Can be used with stock pushrods, lifters, and springs unless noted.