piston blows through bike and hits arm

repost??? http://videos.streetfire.net/video/9E14343A-3078-43E8-9C84-17158E9FA6AD.htm

Yes repost but from a very long long long time
and its weird what happen with him ? how did it blow and Why

It's not a piston; the engine backfired and blew the air cleaner box off and up into his arm. If that were a piston his arm would have been cut clean off.

still looks like it hurt.

It's not a piston; the engine backfired and blew the air cleaner box off and up into his arm. If that were a piston his arm would have been cut clean off.ook well it said it was a piston in the description. so thats what i went with. still for even just a aircleaner that shit looked bad. :)