Price per piece.
The suspension arms of an Acadiane and Ami8 are very popular amongst offroad-drivers. But the connection point of the tie rods is placed differently than on a 2CV. Without mounting / replacing a knife edge adapter the supsension will get too soft, Acadiane and Ami8 had stronger / bigger springs. So if you mount Acadiane suspension arms to a 2CV with original supension units, the supension will become weak and when braking, the car will ‘dive’. By mounting this knife edge, you can enjoy the original suspension comfort of your 2CV again.