Bilstein SNS2 Series (BV) shock absorbers feature an all-steel smooth body construction, 46mm piston and a base valve assembly. These shock absorbers include a steel body with external nitrogen fill valve and can be converted to a coilover application (kit sold separately). SNS2 Series (BV) shock absorbers are ideal for racers competing within sanctioning rules require all-steel body construction who are looking for rebuildable dampers with extra tuning options through base valve technology.