I am almost SURE they were KTM's. LC4's I think. For the big jumping part they were 2 strokes then on the road they were thumpers. When the movie comes out on video I am going to find out for sure!
Im with Lee.The ones on the road to me looked like xr400's, but the one jumping sure wasn't.The seat and everything reminded me of a 2-stroke.Cr250 maybe????:think