The Grayston Spring Assisters give springs a helping hand when lugging loads. Designed as a temporary help for rear springs when carrying heavier loads than normal or when towing, they are progressive in operation and provide extra support to keep vehicles more level and stop wheels catching arches. They have been designed to be fitted by the normal DIY motorist and can just take a few minutes without any need for special tools – simply jack up the car, fit in between the spring gaps and carefully lower back to the ground. Choose the correct size to fit the spring gap (measured in the middle of the spring when vehicle is jacked up). This GE13 model suits a 18 to 25mm gap. Supplied individually.