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 Designed for 88in. to 95in. engines with compression ratios between 9:1 and 10:1 Intake Opening (degrees): 20 Intake Closing (degrees): 40 Exhaust Opening (degrees): 55 Exhaust Closing (degrees): 20 Intake Duration (degrees): 240 Exhaust Duration (degrees): 255 Valve Lift (in): .570 Intake Lift at TDC (in): .187 Exhaust Lift at TDC (in): .179
*Images in the listing are for reference only. Actual product may vary.
*Tinted shield sold separately for all Full-Face helmets unless otherwise noted.
- Brand: S&S Cycle
- 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
- Designed for 88in. to 95in. engines with compression ratios between 9:1 and 10:1
- Intake Opening (degrees): 20
- Intake Closing (degrees): 40
Exhaust Opening (degrees): 55
Exhaust Closing (degrees): 20
Intake Duration (degrees): 240
Exhaust Duration (degrees): 255
Valve Lift (in): .570
Intake Lift at TDC (in): .187
Exhaust Lift at TDC (in): .179