Suspension Self-Leveling Unit If you have loads to tow, suspension self-leveling units keep your vehicle at the right ride height. Your Jeep performs better when the ride is comfortable and handles high load capacity well, without sacrificing one for the other. Check out 4WD.com for this and other towing options for your Jeep. Besides an air compressor, consider Smittybilt air tanks for storing compressed air that’s ready for immediate use when you need more speed or torque. You’ll also need air compressor manifold kits, which work with air compressors to regulate air flow.