Equip your vehicle to be Ready for the Road Ahead™ with enhanced performance and reliability, with the Jost Fifth Wheel Major Air Release Rebuild Kit. This repair kit returns your fifth wheel components to their original working condition, so they can properly function with heavy loads, rugged conditions, and high-tension situations. Crafted with durable materials to resist damage from everyday wear and tear. FleetPride is your First Click in Heavy Duty®.