What is a back rack on a 4 wheeler ?

Question

what is a back rack on a 4 wheeler and what is it used for?

Answer 1

It's the metal frame that sits behind the seat. Mainly used to haul stuff; however, you can find specially made back racks that are also storage containers. There are a few available on e-bay (use "ATV" rather than "4 wheeler" in your search).  

Answer 2

it is just this rack that you are able to put like bags or equipment on it and tie them down so when you 4 wheel you have stuff with you. For example of what i have done is put picnic stuff on it and went to the top of a hill and had lunch. but i bet you can use it more than just picnic stuff.