I don’t think any 1/2-ton is designed for a 500 lb winch bumper. I’d think you would want to be careful about the weight of the bumper you choose, but even a Westin bumper with full brush guard and screens is supposed to be 257 lbs according to Westin. Add a winch and subtract the weight of the OEM bumper being removed and it should be around 300-350 lbs, depending on winch model and synthetic vs wire rope. Adding the weight of a full bumper to a 1/2-ton, I think the weight savings of synthetic winch line becomes more critical.
The Westin tray and winch I added to my F150 weighs about 130 lbs, and the truck handles it fine.
The Westin tray and winch I added to my F150 weighs about 130 lbs, and the truck handles it fine.