288131 Chain drive cam shaft set TWA31S/.510"

For riders who have bumped up their compression, the Andrews TWA31S chain drive cam set is engineered to perform. These cams feature a .510-inch lift and are optimized for 95-inch motors with a compression ratio between 9.8:1 and 10.2:1. They offer a power band ranging from 2,400 to 5,600 RPM, providing a significant performance increase over stock. The design includes a lower TDC lift to make installation straightforward, and they are compatible with stock valve springs. This set is sold as a set and fits 1999 to 2006 Twin Cam A and B motors, excluding the 2006 Dyna. Just like other early chain-drive cams, 1999 models will need a splined driven gear, while later models can reuse the factory 34-tooth gear.