
We use only AV&V valve spring kits designed to complement AV&V valves. The kits include springs, retainers, and 10-degree locks. The spring diameter has been designed to reduce issues of spring to rocker box clearance.

Products / Spring KitsAll sets include 4 springs, upper/lower collars & kepers
Fits Twin-Cam, Evo and Sportster application utilizing a cam with up to .650 -inch of lift. $120.00
Fits Twin-Cam, Evo and Sportster application utilizing a cam with up to .650 -inch of lift. These are manufactured with a beehive design for added spring to rocker box clearance. $150.00
Fits Shovelhead applications utilizing a cam with up to .500-inch of lift. $120.00