330-0438 Easy Start gear drive 635HO camshaft kit (IOG)

This S&S Easy Start gear drive 635HO camshaft kit is the ultimate solution for high-performance 1999 to 2006 Twin Cam engines, excluding 2006 Dyna models. With a massive .635-inch valve lift, these cams are built for serious power. The Easy Start technology uses a centrifugal compression release lobe to bleed off cranking pressure, allowing even big-inch engines to fire up effortlessly using a stock starter and battery. This complete kit includes inner and outer drive gears, bearings, and gaskets. Because these are gear-driven, they eliminate the factory chain tensioner issues and improve timing accuracy. Note that these are not bolt-in and will require clearancing and high-lift valve springs, and they are not compatible with kickstart models or S&S 79cc heads.