640GE Gear Drive Easy Start Camshaft Kit. Fits Dyna 2006 & Twin Cam 2007-2017

Features & Benefits:-

* Eliminates Timing Chain Lash – Improves Valve Timing Accuracy.

* No Tensioner Shoes to wear Out or Fail.

* Reduces Drag on engine - adds Horsepower.

* Reliable Easy Starts on any engine using stock starter.

* Save your starter and battery, automatic no buttons to push.

* Designed for 95ci & Larger Engines with 10.5 to 11.5 Compression & Ported Heads.

* Amazing Horse Power & Torque across the rpm range, best results 3000-6000.

* Not a Bolt-in, High lift springs & Clearance checks by a qualified Technician are required.

* Used in S&S 124ci Twin Cam Engines.

Tech Tips:-

* Twin Cam 2012up engines feature Automatic Compression Release (ACR) as standard equipment, S&S EZ Start cams will work but the factory ACR’s must be disconnected.

* Check Crankshaft run-out using Jim's Tool # JM-785.

* S&S Crankshafts are available where run-out exceeds Specification.

Proudly Made in the USA by S& S Cycle!