Öhlins provides cancellation kits for cars originally equipped with electronically adjustable shock absorbers. Using a cancellation kit from Öhlins prevents error messages from appearing on your display after switching shock absorbers on the car. Features: Avoids error messages when changing the shock absorber from OE. The factory ECU works in conjunction with this cancellation kit and all functions of the car remain. Can also be used for other manufacturers of after market suspensions separately. The kit comes with mounting instruction and one kit contains parts for both front and rear.