Nothing really, to be honest i thing there a waste of money for the few grams you save and iv seen people that dont exactly go big or land heavy break them? Also the only people i can see benefitting from them are world riders where grams do count. Plus i seem to remember a while back u dissing them either on here or on the facebook page cos of the snappege reason so its weird u would get a set knowing this? i know people are running sets they have had a while but i do think they are very hit and miss and you could get a good set or a shit set thats weak. my opinion anyway and i no that opinions are like arseholes. everyone has one and everyone elses stinks haha!