Air Lift Company's LoadLifter 5000 Ultimate Plus air spring suspension line features high quality upgraded components for the elite tower and hauler. The exclusive upgrades include stainless steel mounting hardware, roll plates and braided air line. With the added protection that stainless steel provides, users can be assured that their air springs are protected from sharp edges and road debris. Air Lift also added military-grade AN fittings that simply thread together for a metal to metal seal, no air line cutting required. The LoadLifter 5000 Ultimate Plus kits feature double-bellow air springs with an Air Lift-exclusive internal jounce bumper, built to provide superior load-leveling capabilities with full adjustability and improved ride quality. The air springs are built like a tire, with durable 2-ply fabric and ultra-strong nylon composite end caps, which are light and corrosion-resistant. The internal jounce bumper is added to absorb shock and protect large loads, and is completely maintenance-free, allowing for the air springs to run safely at zero air pressure in emergency situations.