[C-STR307]Adjustable Krypton gas pressurized dampers by Spax forrearof Mini. All shock absorbers are not created equal, the Spax brand is often considered the top of the heap. Spax dampers are gas filled for much longer life and unlike standard oil filled shocks, they are consistent in light to heavy use. The screwdriver adjust feature not only allows you to tailor them to your specific likes, but the ease of adjustment encourages you to change them as often as needed. Closed length 261.25mm. open length 385.25mmm All are sold individually but it is highly recommended that they are fitted in axle pairs