Look everyone knows that a Class IV hitch (which is what the factory hitch is) is only good for 1000LBs tongue and 10,000lbs trailer WITH a Weight Distributing Hitch set-up, other wise you are limited to 800lbs tongue and 8,000 trailer. This is just how the people that rate hitches classify them. You can step up to a class V hitch (I have one) and then you would be able to pull 12,000lbs of trailer and have 1,200lbs of tongue weight WITH a weight distributing hitch set-up, other wise it would be 1000lbs tongue and 10,000lbs trailer. After that there is a 2-1/2" receiver hitch available (the standard factory hitch is 2") and they are advertised as 15,ooolbs trailer and 1,500lbs tongue, but I do believe they must be welded to the frame to get the maximum weight allowance.