SuperSprings SSF-501-40 SumoSprings Fits 07-09 MotorhomeAir Helper Spring SumoSprings SumoSprings; Solo Kits Are Replacements To Factory Bump Stops; Capacity 1000 lbs. At 50 Percent Compression; Do Not Exceed GVWR; No Drill Required; SPECIFICATIONS: Max Load: 1400 lbs. FEATURES: Sold as a pair left and right Requires no maintenance; Proudly made in the U. S. A. Enhances Load Carrying Ability 1000 Pounds Capacity At 50 Pct Compression Reduces And Stabilizes Sway Improves Overall Driver Control And Ride