Grayston coil spring assisters for coil springs with a gap between coils of 39mm to 51mm. These heavy duty rubber assisters/rasiers are typically inserted between the coils of your rear coil springs, usually on a towing vehicle. They help assist and or raise the spring by physically limiting the amount of compression that will occur when a heavy load is placed in the vehicle or on a towbar and when accelerating and braking etc. Supplied Individually.
