SuperSprings SSR-184-40-1 SumoSprings Fits 05-21 F53 MotorhomeAir Helper Spring SumoSprings SumoSprings; Maxim Kit; Capacity 3000 lbs. At 50 Percent Compression; Do Not Exceed GVWR; SPECIFICATIONS: Max Load: 3000 lbs. FEATURES: Sold as a pair left and right Requires no maintenance; Proudly made in the U. S. A. Enhances Load Carrying Ability 3000 Pounds Capacity At 50 Percent Compression Reduces And Stabilizes Sway Improves Overall Driver Control And Ride Comfort Compress Up To 80 Pct Original Height With Full