S&S 640 Easy Start Cam Kit For Harley Twin Cam
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  • S&S 640 Easy Start Cam Kit For Harley Twin Cam - Chain Drive Cams

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$427.95 - $857.95
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Video Reviews (2)

S&S 640 Easy Start Cam Kit For Harley Twin Cam Videos

S&S Cycle 640 EZ Easy Start Cam Kit For Harley Twin Cam

If you've put together a hot bike - or if reliability is paramount - an S&S Easy Start Cam Kit should be on your list. Don't bother fooling with compression releases or massive-output batteries and super-high-buck starters. S&S designed the Easy Start cams with performance in mind, but then revamped the design to give you great power on a cam that starts easier than a dirtbike. At the center of the cam lives a centrifugally retracted, spring loaded compression release lobe milled into the heel of each exhaust lobe. At cranking speeds, the lobe bumps the exhaust valve open slightly during the compression stroke, making the engine much easier to turn over. Once the engine fires and reaches 800 RPM, the lobe swings out of the tappet roller path, allowing the engine to run normally and with full compression. Ain't technology great?

Features:

  • Start any engine regardless of displacement or compression ratio with a stock starter
  • Save your starter and battery; tested for 10,000 starts without running battery down
  • Allows for easy start by initially reducing cranking 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
  • Made in the USA

640 Cam Info:

  • Designed for 95" or larger engines with compression ratios from 10.5:1-11.5:1
  • Used in S&S T124 engines
  • You're "on the cam" from 3000 RPM-6000 RPM
  • Comparable to Screamin' Eagle 264 cams or Andrews 59H
  • High-lift valve springs required for all applications
  • Intake open/close 25°/60°
  • Exhaust open/close 65°/25°
  • Intake duration 265°
  • Exhaust duration 270°
  • Lift .640"
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