Airlift 50203 Universal Single RideControl Replacement Air Spring Kit. Replacement air spring for select RideControl kits Includes one (1) replacement sleeve air spring Brackets not included. Replacement air spring for select RideControl kits. Includes one (1) replacement sleeve air spring. Not a full air spring kit. No brackets or installation hardware included. Weight: 2.0 lbs. Height: 4.88 in. Width: 4.25 in. Length: 10.25 in.