The short answer is yes, but it depends on the size of the 4 wheeler and the size of the truck bed.
The first consideration is the weight capacity of your truck. If you plan to transport your 4 wheeler in a truck bed, make sure that your vehicle can handle the weight of your 4 wheeler.
This will ensure that you are not overloading your vehicle, which can be dangerous and cause damage to both the truck and the 4 wheeler.
Next, measure the length, width and height of your 4 wheeler to determine if it will fit in a standard truck bed. The length should be no more than 6 feet, which is typically enough to fit most ATVs or UTVs. The width should be no more than five feet wide and the height should be no more than four feet tall.
Finally, consider any accessories you may need for transporting your 4 wheeler in a truck bed. You may need straps or tie-downs to secure it in place, as well as ramps for loading and unloading. You may also need extra padding or blankets to protect it from scratches or dents during transport.
In conclusion, a 4 wheeler can fit in a truck bed with some considerations including weight capacity, size restrictions and any accessories needed for loading/unloading safely. By taking these into account beforehand, you can ensure that your vehicle is safe while transporting your 4 wheeler.