RACE TECH Progressively Wound Shock Spring Gray P20 Spring Rate 454 lbs/in SRSP 6326P20

Race Tech’s answer to the linkless PDS system, Easy fix for the problem of rear suspension being too harsh and too easy to bottom, Progressive spring gives more resistance to bottoming and supplies a plusher ride, Made from chrome silicon spring steel, shot-peened, heat-treated and preset to prevent sacking, The rates get stiffer as the numbers go higher.