As far as performance ATV parts are concerned, well they must not be bought second hand. . You might have seen cars moving about with different colors of doors and bumper.
The only reason why you would end up selling a performance part is because it is about to be worn out. This could result in giving birth to some other problem regarding your vehicle. The problem with these parts is that they still do not provide proper performance. The over all cost of second hand bumpers along with paint job is lesser than a new bumper.Purchasing wrong or second hand transport vehicles parts would greatly affect the performance of your ATV in a negative way. There is nothing wrong with purchasing second hand parts as long as these are body parts or other accessories. This is important as the part might not fit in your ATV. A dealer would take such thrown away parts and fix them up. This is a lot better than wasting money over brand new bumpers.
If you are looking for brand new parts, well the internet would provide with a wide variety of them. Later they would apply a simple paint job on them and get the desired look. Make sure that the parts come along with a returnable warranty.
This is rather a good decision. Mostly dealers would obtain these parts from vehicles which are in scrap yard. Over the internet you would easily find parts which fit in your budget. Now you can imagine why it is not wise to purchase second hand performance ATV parts. Mostly people dont bother with it; they simply throw away such parts. Well these people purchase second hand body parts for their cars