They are the hight technology. The prototypes are Line 1280's with rockets on the back. They will allow the rider to go to ridiculous speed. They also give you huge for when you need to pull out a huge trick for a comp. They are accompanied with silencers for the engine.This is also brough to you by the man who invented soul plates for ski's. I am by the way a snowboarder and trying to test rocket power on alpine sports.