Last one to post in this thread wins!

No I remember 340 cc 440 cc there might have been a 500 can’t remember. The 600cc and over came after they upgraded the suspension from plank to something with coil over struts and trailing arms. Much better. As the tech. in the suspension got better so did the power 1200 cc is the norm. Now as is 100 mph.
Just another way to kill yourself at that speed.