When building a flexible suspension it is important to have plenty of shock travel. Stock length shocks simply won't travel far enough to keep up with our flexible springs. We recommend shocks with 12"-14" of travel. Our tall hoops will accommodate 14" Bilstein Shocks and require the inner fender to be cut and shocks installed with the top above the inner fender.. Our Medium Hoops will accommodate 12" shocks without cutting the inner fenders. Weld on installation. Unpainted finish.