I purchased a 4" elbow and cap and a stick of SDR35 pipe. I was able to turn 90 degrees to the rear and extend it by four feet. SDR35 pipe is a thin walled drain, waste, vent (DWV) pipe. Similar to what the existing hose tube is made of, and matches the outside diameter. Also, you must purchase 4" DWV fittings. The DMV elbow will have a long smooth sweep. Don't just purchase a 4" pvc fitting. I'll take some pics tonight. Works great.
Brian, Mary, kids, beagle - Moose, and mutt - Maggie.
2012 Greyhawk 31FS
2013 Ford Explorer Toad