The Lippert Equa-Flex rubberized equalizer helps give you a smoother, more comfortable ride when you're towing your RV. This kit dramatically reduces fore-to-aft trailer movement, otherwise known as chucking, and it helps eliminate trailer and cargo damage caused by road shock and vibration. Designed for tandem axle trailers with double-eye leaf springs, this patented trailer equalizer delivers a ride as smooth as torsion axles at a fraction of the cost. This kit comes with (2) Equa-Flex sub-units with pre-installed bronze bushings. The Equa-Flex is available for weight capacities ranging from 3,500 to 5,200 lbs.