THEY FORGOT TO TORQUE MY AXLE NUT, AND I ALMOST CRASHED!!!On Tues. 9/12/17 I had the Service Dept. at Sun Country Powersports (Farmington, NM) mount new tires onto my 2016 Honda CRF250L motorcycle. I decided to take a motorcycle ride up ~ 28 miles to my north up Hwy 511 from Navaho Lake. The road was very bumpy and curvy, and is surrounded by deep canyons and tall cliffs. I kept my speeds around 40 mph. SUDDENLY, at the ~ 19 mile mark (just before the Ute Reservation sign) I felt a violent side-to-side wobble of the back wheel. I immediately applied my brakes and pulled safely off the road. When I examined the rear wheel, I was SHOCKED to see: 1) that my rear axle was sticking out ~ 3 inches on the left side of the wheel, 2) the axle-nut on the right side was completely missing, 3) the remaining axle on the right side appeared to only have ~ 1/4 inch of contact remaining on the right side support (swing arm). In addition, 4) the chain had several inches of up and down play, 5) the rear tire (where the tire-rubber meets the left side of the rim) appeared frayed, and 6) the rear wheel was severely out of alignment. I immediately took numerous pictures with both my phone and camera, and I sent many home to my family and friends.The dealership picked me up and and fter completing their work, they called me back so that I could personally check the torque numbers on both the front and rear axles, and they assured me that everything was inspected for damage (i.e., the axle, wheel, spokes, rim, tire, front sprocket, wheel sprocket, etc.) and that everything was in perfect condition.I wrote a letter to the owner of Sun Country to let him know how close I came to being killed or severely injured. The owner wrote me and stated that the Service Department is putting procedures in place to track torque specs on every job, and include a statement on the Service Ticket reminding customers to check axle nuts after tire service.