S&S Cycle 551CE Easy Start Chain Drive Camshaft Kit - 106-4947

Convert your Twin Cam to a gear drive
Kit includes cams, gears both inner and outer, gaskets,
bearings, bolts and heavy-duty bearing plate
How it works: Each of the 2 exhaust cam lobes are equipped with a spring loaded compression release lobe on the heel of the cam at the point where the valve would normally be fully closed. The lobe holds the exhaust valve open slightly at cranking speed. This releases some of the compression, making the engine much easier to crank. 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.
Start any engine with a stock starter
Save your starter and battery
Reliable-tested for 10,000 starts and didnt even run the battery down
Automatic - no buttons to push
Available in chain and gear drive versions
Optimized for 2007-up 96 to 106 CID touring bike with slip-on mufflers and 9.0 to 10:1 compression.
Best bolt-in cam available for dressers.
Pulls hard from idle to 4000 rpm.
Intake Opening (degrees): 17
Intake Closing (degrees): 19
Exhaust Opening (degrees): 41
Exhaust Closing (degrees): 17
Intake Duration (degrees): 215
Exhaust Duration (degrees): 237
Intake Lift (in): .550
Exhaust Lift (in): .550
Intake Lift at TDC (in): .178
Exhaust Lift at TDC (in): .170