If i buy a Z is the frame going to bend or break.

 

Good question. You may want to do some searches on here as there have been some posts about that. Although there are many people who haven't had problems.

 

If you ride it hard enough any frame will bend or brake

 

I highly doubt it. You have to slam those frames pretty hard in order to bend or tweak them. Just don't run into any trees!

 

unless you plan on taking on some massive motorcross tabletops or playing chicken with a redwood, most frames hold up ok.

That said, many people who have made significant mods to thier z's and ride some larger jumps have had some problems with the frame busting up around the front shock towers and a few other problems. All of the z's made in the second half of the production year have reinforced axles, so that problem seems to have been solved.

bottom line, if you are into mx or big air, you might need to look into reinforcement.

 

I have never seen a frame that did not break if rode hard enough.

 

I dont think the frame will bend any easier than a 400ex or Raptor would.