The CCK coilover Conversion kit allows you to utilise the superior damping of your H&R strut while converting to a full air system. This is done by removing the springs and fitting the bag over coil which seals directly to the damper on the strut. You can either use original top mounts or select the option to keep or add adjustable camber top mounts. This means you can enjoy the ride quality of the H&R strut, have the height adjustability of air but also get the ultimate drop due the shortened H&R strut design. (lowering depends of H&R deep version you have). We can offer a range of air management systems to accompany this product. Please contact us for availability and compatibility with your car suspension.