What size is the receiver? Although the Ford spec may be higher from purely a GCWR rating, the final stage manufacturer (motorhome builder) has the last say on final hitch rating. But, the receiver size is step #1 to determine the max capacity of the hitch itself. Then, after the hitch size, it will be the allowed Rear Gross Axle Rating AND the GCWR of the finished unit. And, yes, motorhome builders tend to be conservative with ratings.
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