no they have some power my freeind has a mx setup one with a 352 big bore it hauls with the 450's on the track.ivv seen him get holoshots on the 400ex and z400's
i hate the way the plastics are, they look so stupid rounded off like that. imo yamaha has the best looking atv's. when it comes to performance im not sure, but def. looks
ohh sh*t you know what im going to do ...you know how its missing the piston head ....ill just buy a bb kit off ebay ..it comes with the head and piston for like 300 ...and then ill just find wheels