The Motojackrack on my X5 works well for dirtbikes. Used one for 5 years. We took a CRF450 and a Boston Whaler 13ft (2 inch ball mount on the motojackrack) 900 miles from NC to Northern MI twice. The bike weight is 230lbs. The boat 575lbs with 50lbs tongue weight. I would be concerned about putting 450 lb motorcycle on my truck for any distance unless it was a full sized rig and rated for 500 lbs minimum. Get three friends to stand on the ball first and see what your springs can handle. Remember the bike is back another 12-15 inches so there is a leverage effect too. A great idea if your vehicle is up to the task.