The Progressive Model 412 shock absorbers, fully covered, double-wall construction and 6-level shock absorbers. Special cam adjustment system, which allows you to easily adjust the preload, heat-treated and resistantly chromed plunger, durable oil seals and evaporative resistant oil. Including bushings sup. and inf. Sold in pairs. Note: When installing shock absorbers shorter than stocks, it is necessary to check the fender/rubber space during the suspension function.