SuperSprings SSR-106-47-1 SumoSpringsAir Helper Spring SumoSprings SumoSprings; Maxim Kit; Capacity 4600 lbs. At 50 Percent Compression; Do Not Exceed GVWR; Heavy Duty; No Drill Required; SPECIFICATIONS: Max Load: 3600 lbs. FEATURES: Sold as a pair left and right Requires no maintenance; Proudly made in the U. S. A. Enhances Load Carrying Ability 4600 Pounds Capacity At 50 Percent Compression Reduces And Stabilizes Sway Improves Overall Driver Control And Ride Comfort Compress Up To 80