S&S Cycle 640CE Easy Start Chain Drive Kit for Harley-Davidson Big Twins 99-06 Models (except Dyna 2006 Models)

Description for S&S Cycle 640CE Easy Start Chain Drive Camshaft Kit

• Easy Start Cams from S&S Cycle make hard starting obsolete for 1999-16 Twin Cams.
• Chain drive version
• 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
• Camshafts that exceed the limits of the stock valve springs require the use of special high lift springs. Most S&S cams have higher lift than stock and are designed to take advantage of the extra flow of ported stock heads or S&S Super Stock heads. Due to the high lift of these cams, S&S adjustable pushrods are recommended.
• To get the best performance from a performance cam installation, a high flow intake and exhaust system is also recommended.
• Quick installation and Easy Start Cams allow stock starter to start any engine.
• 1999-2004 stock springs will handle camshafts with lift up to 0.510". If a camshaft with higher lift is installed, high performance valve springs capable of handling a greater lift must be used.
• 2005-up stock valve springs will handle camshafts with lift up to 0.585". If a camshaft with higher lift is installed, high performance valve springs capable of handling a greater lift must be used. Cams with over 0.585" of lift will cause interference between the valve spring top collar and the valve seal with stock cylinder heads.
• Installation of S&S chain drive cams requires special tools. Attempting the cam change operation without these tools will be difficult. Damage can result which will not be covered under warranty.
• S&S Cycle chain drive cams are compatible with the stock splined chain sprocket used in 2000-06 Twin Cam 88 engines, but may be used in 1999 engines if the Harley-Davidson 2000-06 splined rear cam sprocket and appropriate 2000-06 sprocket spacer are used.
• For lifts over.510" S&S strongly recommends that the stock chain drive cam be upgraded to the S&S Cycle gear drive or to the H-D part number 25284-08. This kit upgrades the problematic spring loaded chain tensioners to more reliable hydraulic tensioners, and also upgrades the oil pump
• 640 Camshafts are used in S&S Cycle T124 engines, this cam makes horsepower! Intended for engines of 95 CID or more w/ compression ratios between 10.5:1 and 11.5:1. 3000-6000 rpm.