Hellwig 6017 Big Wig Air Sway Bar Hellwig "big wig" air suspension is newest addition to the Hellwig line-up of tow and haul products Offering better handling and control under heavily loaded conditions these kits increase stability and control, reduce bottoming, and provide the ability to level the heaviest loads from left to right and front to rear Featuring an air spring with superior ride quality, this unit softens typical loaded ride conditions by transferring load from the vehicles leaf spring to the Hellwig air spring Hellwig air springs offer longer suspension travel, ease of adjustment, simple installation and years of heavy duty load control