The dealership people in the United Arab Emirates say it will, but there are so many F-150 owners around the world who are freely modifying their trucks. (The did not give me the warranty book when I bought the truck)
ANY modifications to the vehicle that are NOT authorized by the manufacturer WILL void the manufacturer's warranty. There MAY be so many F-150 owners around the world who are freely modifying their trucks but MOST of them are smart enough to wait until AFTER the warranty has expired.
Exhaust system probably won't as long as the catalytic converter(s) aren't touched. A lift kit probably will.
UAE isn't the United states, so I couldn't tell you there. In the USA, we have a law passed to protect consumers. Here, simply installing aftermarket parts doesn't void any warranty. To void the warranty, the dealer would need to provide proof that the modification directly caused a failure. So if your engine blows, they can't blame the suspension installation for it.
