Verify use before ordering. This item does not list street-use, OHV, emissions, homologation, or closed-course status in the available product details. It may be intended for closed-course competition, off-road/OHV, or non-highway use only. Please check applicable rules before purchase and installation.
S&S CYCLE 551 Easy Start Camshaft Kit
S&S CYCLE 551 Easy Start Camshaft Kit by S&S CYCLE is a engine parts listing built for riders searching by exact product name, fitment, style, and part number.
Key Features
- Allows for easy start by initially reducing crank compression, but once the engine starts and rpm increases, the compression release lobe is centrifugally retracted and the engine runs normally, with full compression, and without any loss in performance
- Optimized for 88"/96"/103" to 106" Touring bike with slip-on mufflers and 9.0:1 to 9.0:9 compression with stock starter
- Bolt-in for stock or mildly modified Touring models
- Greatly improves low-end and midrange torque
- Strongest from idle to 4000 rpm
- Includes camshafts, gearcover gasket, bearings, retaining ring, o-ring, threat lock and instructions
- Made in the USA
- 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).
Part Numbers
0925-0521, 106-5293, 0925-0443, 106-4947, 0925-0453, 106-5442, 0925-0448, 106-5737
Available Styles
Camshaft Kit / Easy Start / 551 Chain Drive / Big Twin '99-'06; Camshaft Kit / Easy Start / 551 Chain Drive / Twin Cam '07-'17; Camshaft Kit / Easy Start / 551 Gear Drive / Big Twin '99-'06; Camshaft Kit / Easy Start / 551 Gear Drive / Twin Cam '07-'17
Available options: 4