Gaz Shocks BMW E21 75-83 GHA Coilover Kit. This kit features on car damping adjustment and the shortened body and stroke length allow a 25-65mm lowering ride height adjustment via threaded platforms. The kit is supplied with springs, where a coilover is unable to be installed a separate damper and rear coil spring with a variable spring platform is used instead to obtain ride height adjustment. Price for full kit. Image for illustartion purposes only. Current lead time is 4-6 weeks from order. NOTE: Original equipment donor units are required by the factory in order to make this kit. Contact us for shipping info, shipping of donor units to factory not included in the online price.