>>77969The body and engine, yes.
Obviously there's no wheels on it. The track does rob a bit of power from the engine, as does being at 10,000 feet elevation. These KX450F's were about as small a bike as i'd put this kit on. The 570 'Berg handled it a lot better.
One of the weird things to get used to was not having to put a foot down when you stop. The track and ski are wide enough that it'll keep the bike upright at a standstill.