Look over the frame very close before you purchase it. Tony karts are an excellent chassis, but are notorious for breaking off the front seat tabs, the rear seat mounts and breaking in front of the bearing hangar behind the motor mount. We have had over a dozen OTK karts the last several years, I currently have 2 of them that I run in Tag Masters class. Of the dozen or so , 2/3rds of them have broken in one or more places, several of them after only a handful of races. They are extremely flexible, which is why they drive so well, but that flexibility comes with compromises.