hi farnk, i've got an atomik 250 and my mate has one as well. change the air filter box to a pod filter or something better than whats on it now, take the chain adjusters out and replace the bolt thread that the nuts adjust on, change them to thicker thread. you will have to drill the red thingy that the bolts go into to suit the new bolts, these will bend and strip if not replaced,also put 4 nuts on instead of two each side. change your handlebars (does'nt have to be straight away and if your using your battery it will probably leak mine does and a lot of other poeple's as well but i'm not to sure on what to do about that yet. let me know if you have any probs