SuperSprings Air Suspension Helper Spring Kit for Trailer SumoSprings; Trailer Axle; For Use w/5000-8500 Ibs. GAWR; For Spring-Under Axle Configuration; Incl. Line Relocation Bracket - Part #TSS-106-47

Reduces And Absorbs Vibration,Improves Overall Driver Control And Ride Comfort,Will Not Leak Or Rupture,Never Load Any Vehicle Beyond The Manufacturers GVWR,Increases safety,Maintenance-Free,Compress Up To 80 Pct. Of Original Height w/Full Memory Rebound,Reduces overall cost of ownership,Progressive Spring Rate With Superior Damping Properties,1800 Lb Capacity At 50% Compression,Made from patented micro-cellular urethane,Sold As A Pair [Left And Right]