Awesome Service – See Our Ratings. Touring Tech Rear Air Bag Tow Assist Kit. Touring Tech towing assist kit includes (2) 2500lb air springs with brackets, corrosion proof push to connect fittings, hardware, ΒΌ’ DOT approved air line and Schrader fill/release valve. Simple installation with no drilling or modifications necessary. Provides up to 5000lbs of leveling capacity.