Giant STP, I got the bike a few months ago. I weigh less then 160 and I don't ride real hard. small jumps, manuals, etc.
I broke the first derailer today, while hopping a curb. I figured the few months of jumping caused the thing to weaken, went to the Giant dealer, paid 15 bucks for a new one and then did a few manuals, hopped a curb, jumped a curb cut and broke the new one. WTF?