2017 F150 4x4 has no top towed speed limit per the manual. You don't mention what you are towing WITH however. Also, braking ability is extremely important. Your F150 needs to be equipped with some type of braking system to be towed safely at ANY speed. Brake Buddy, Air Force One, or whatever. Enjoy!
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Scot & Laura Kellersberger, U.S. Army (ret)
Newmar 4 wheel drive Dutch Star 3891, SOLD
Now RV'ing on the water in a Trawler!
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