- Cam kit includes inner gears as well as an outer cam drive gear kit
- Fits 1999-2006 Harley-Davidson® big twin (except '06 HD® Dyna®)
- These cams are not bolt in and will need special valve springs
Upgrade your Harley Davidson big twin engine with the S&S Cycle 99-06 BT Easy Start 640GE Gear Drive Camshaft Kit, part number 106-4840. Designed for engines of 95 cubic inches or larger with compression ratios between 10.5:1 and 11.5:1, this kit significantly enhances valve timing precision by eliminating timing chain lash. The result is improved engine performance, more accurate timing, and easier starting, even with stock starters. The kit includes both inner gears and an outer cam drive gear, ensuring comprehensive compatibility and reliable installation. It is specifically engineered for models from 1999 to 2006, excluding the 2006 Dyna, fitting a wide range of Harley Davidson big twin models such as Fat Boy, Night Train, Softail Deuce, and Heritage Softail Classic. This camshaft kit is not a bolt-in upgrade and requires the use of special valve springs for proper installation and operation. Proper tuning and installation are essential to achieve optimal performance and reliability. With its precision engineering and robust components, this gear drive camshaft kit offers a significant upgrade for serious Harley enthusiasts seeking enhanced performance and smoother operation. Whether you're restoring a vintage model or upgrading a daily rider, the S&S Cycle 640GE kit provides a high-quality solution designed to meet demanding performance standards and ensure long-lasting durability in your powersports engine.
Features:
- Improves valve timing accuracy by eliminating timing chain lash
- Includes inner gears and outer cam drive gear kit for comprehensive installation
- Designed for Harley Davidson big twin engines 95+ cubic inches with high compression ratios
- Fits 1999-2006 Harley Davidson big twin models (excluding 2006 Dyna)
- Requires special valve springs; not a bolt-in upgrade
