24valve competition roller springs-07-s-009HD24vs-XR

These springs are for aggressive roller profiles. They are 107# @1.38 and coil bind at .780". They work well with aggressive roller profiles up to .395" lift. When running over .370" lift cams please pay special attention to installed height and coil bind. Do not run these springs with a performance flat tappet cam. Nose pressures are too excessive.