Fitting time is around 2 hours. If your X5 also has front air suspension we can offer advice on converting the front to coil springs as well. This complete kit consits of. 2x OE spec coil springs (Heavy duty springs are also available at no extra charge, ideal if you do a lot of towing). 2x genuine BMW Upper Spring Pads.2x genuine BMW Lower Spring Pads. 1x detailed fitting guide with full colour pictures. With regards to the SELFLEVEL SUSP. This will permanently remove the error message from the dash. IF YOU ARE LOCAL TO GLASGOW I CAN ALSO SWITCH OFF THE ERROR MESSAGE FREE OF CHARGE WHEN PURCHASING A COIL SPRING CONVERSION KIT. The item "BMW X5 E53 Rear Suspension Air Bag to Coil Spring Conversion Kit 2000-2006" is in sale since Monday, January 2, 2017. This item is in the category "Vehicle Parts & Accessories\Car Parts\Suspension & Steering\Coil Springs". The seller is "conversionsmart" and is located in Glasgow. This item can be shipped worldwide.