Primary springs control engagement and shift RPM.. Fine calibrate your primary clutch with Venom springs, manufactured from high tensile wire to exacting tolerances.. Force Lbs. @ 2.70in. - 1.70in..
*Free to the contiguous United States consisting of the 48 adjoining U.S. states plus Washington, D.C., on the continent of North America. Free is not available to non-contiguous states of Alaska and Hawaii, US Protectorates, or APO, FPO or DPO locations. Photos are for reference only. Actual product may differ from the item shown in photograph.