The point of using weaker (softer) materials is that they will deform and absorb energy so the important parts don't get damaged. Think of a car shell. Wheels, bumpers, engine, pannels all of that will become damaged and fall off in order to prevent damage to the inner structure. Same thing is with rear grab. You don't want a really tough one because the force will transfer forward and break or damage the next weakest thing which is probably sub frame or bolts that are holding it. Hit it enough times and you'll end up with a banana raptor. Just my opinion.
Thank you so much for this. I do realize this and am designing some custom bolts that hold the grab bar on that will break instead of the grab bar or subframe. What do you think? replacing these bolts would be way cheaper then buying a whole new grab bar.
I am designing a stainless/aluminum grab bar that should hold up much better than any grab bar I have ever tested on a quad. If there is anyone interested in buying one you should post it here. They are super strong and I have never broken one yet through various amounts of testing. They are extremely strong! If you are interested and are willing to help me out I can start up a website selling these bad boys. I will try to get pictures up soon!