This little this is pretty wicked. Not only does it rip me around but I've had some of my friends get on it that are over 300# and it hauls still. Put some good oil in it and get that nasty green Chinese transfer oil out. I put a fmf full exhaust along with having to re jet and just got a amr stage 3 rev box and it almost feels like my big bike. I have it mounted on a xtreme 110 frame and I'm gonna get a new 50 cal rearend for it and ill start racing this one. Maby winter project next year will b a new carb, head, and cams. But sick little engine though. U do need to tinker with it to open it up to its full potential.