Start any engine regardless of displacement or compression ratio with a stock starter. The new Easy Start Cams from S&S Cycle make hard starting obsolete for 1999-up big twins. Available in chain drive and gear drive versions. Don’t get caught “dead” without them! More Proven Performance from S&S Cycle, Inc., the leader in V-Twin high performance parts since 1958.

Features:
• Start any engine with a stock starter
• Save your starter and battery!
• Reliable – tested for 10,000 starts and didn’t even run the battery down!
• Automatic – no buttons to push

THREE MOST POPULAR GRINDS
A bolt-in cam for all RPM ranges. Something for everyone.

S&S set out to develop a new group of bolt in cams for 2007-up big twins. The three design targets were low end torque for touring, peak horsepower and a cam that would offer the best possible combination between torque and horsepower. The 551 emerged as the touring cam and the 583 is a great over all cam. The proven 585 posted the best results for peak horsepower.

Here's How it Works:

ONE
Each of the two exhaust cam lobes are equipped with a spring loaded compression release lobe on the “heal” of the cam at the point where the valve would normally be fully closed.

TWO
The lobe holds the exhaust valve open slightly at cranking speed. This releases some of the compression, making the engine much easier to crank.

THREE
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. This allows a stock starter and battery to start nearly any engine.

Reduces cranking compression – easier on starting system!