My best Buddy had one of these, the modern version. He chipped it up, stubbied the zorst and a few other things.
It went like a stung cat - even handled OK. He perfected this little stunt where he'd jam on the front brake and drive the locked front wheel with the rear. Then he realised (with out injury) how much grief he could come to if he continued, and chose to stop that stunt. But grunt - pheeeweee. With me on the back he'd lift it up in third without clutching it. He's mildly insane on a bike.
