Bilstein's B6 Air Suspension Struts are uprated replacements for vehicles with air springs. Combining an OE spec air spring with an uprated B6 damper unit these are a performance upgrade for selected vehicles supplied from the factory with air suspension.OE spec air springUprated monotube damperSportier handling upgrade for vehicles with air suspension2 year warranty for added peace of mindBilstein's B6 Air Spring Struts combine an air spring designed to perform to the same specification as the original unit, with an uprated B6 damper unit. This combination means you don't lose any of the flexibility of the original system, whilst enjoying sportier uprated handling.Modern air suspension systems use sophisticated electronics to continually vary the rate of the air springs, to enable the vehicles suspension to quickly adapt to changing road conditions. Any replacement spring must be able to match the performance of the original to avoid compromising the handling. Bilstein have combined a