All R129 rear. Bilstein gas pressure shock absorbers are arguably the highest quality shock absorber and also the chosen brand for not only Mercedes, Porsche, but are found on vehicles from AMG,Lorinser,Brabus,Carlsson to name a few. Restore ride quality using the B4 gas pressure shock absorber. We have priced these for each piece including Vat but excluding carriage as would always recommend changing them in axle pairs. Carriage adds £12 to UK mainland addresses excluding Highlands and Islands. Original Bilstein no. B36-1316