Bilstein 24-021548 36mm Monotube Shock Absorber The B12 Bilstein Tuned Suspension (BTS) kit is a highperformance system that includes four coil springs with aspecially-tuned spring rate and Bilstein's monotube gas pressureshocks or struts featuring valving specific to your vehicle. TheB12 system provides a lower stance and more stable ride for betterroad handling and control. This is the most economical way tovastly improve your car's performance AND appearance. (yellowpaint, steel body)Bilstein Heavy Duty Shocks fit most vehicles including full-sizesedans, SUVs and trucks. Bilstein Heavy Duty Shocks provideimproved handling and stability without sacrificing ride comfort.Bilstein Heavy Duty Shocks offer super damping ability that makesthem ideal for heavy hauling and occasional off-road use, whilemaintaining exceptional street ride.