Bilstein SNS2 Series shock absorbers feature a steel smooth body design utilizing the 46mm monotube technology (piston and piston band sold separately) designed for motorsports applications. These shock absorbers feature a steel body cap and a Schrader valve or fill plug. They are upgradeable to adjustable shafts and can be converted to a coilover (kit sold separately). SNS2 Series shock absorbers are ideal for racers whose sanctioning rules require an all steel construction with rebuild capability.