We were able to get our hands on one of the first sets of ARB's new Heavy Duty Air Line kits for use on both of Jane's axles. They consist of stout rubber hose that threads into the bulkhead fitting coming off the axle housing. The hose is about four feet long so you can mount it along a frame rail, out of harm's way. A bracket is supplied for this use. From the end of the hose to the compressor ARB's standard blue tubing is used.