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S&S Cycle Easy Start Camshaft, 640 Gear Drive for Twin Cam 1999-2006, 106-4840
Regular price $995.95 USD
Camshaft - Easy Start - 640 Gear Drive - Twin Cam '99-'06 (except '06 Dyna) Professional installation is required. Before assembly, the...
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Camshaft - Easy Start - 640 Gear Drive - Twin Cam '99-'06 (except '06 Dyna)
Professional installation is required. Before assembly, the installer must verify coil-bind clearance, valve-to-valve clearance, and valve-to-piston clearance for the specific engine combination. High-lift valve springs and adjustable pushrods are required for proper installation and operation. This camshaft is not intended for models equipped with original-equipment compression releases. Confirm engine specifications, model-year compatibility, and supporting valvetrain components before purchase.
Features:
- Easy-start design reduces crank compression during initial engine cranking.
- Centrifugal compression-release lobe retracts as rpm increases for full compression during operation.
- 640 gear-drive camshaft profile delivers strong performance from 3,000 rpm to 6,000 rpm.
- Intended for 95, 96, 103, and 110 cubic-inch engines with compression ratios between 10.5:1 and 11.5:1.
- Compatible with Twin Cam applications from 1999 through 2006, except 2006 Dyna models.
- Requires high-lift valve springs and adjustable pushrods.
- Installer must check coil-bind, valve-to-valve, and valve-to-piston clearance.
- Not compatible with models using original-equipment compression releases.
- Made in the USA.
