Pro BIKES
Keith Johnson rode under a "works bike" rule which allows manufacturers to ride a bike for 1 year before going into production. Doug Henry done the same on the YZF 400 before Yamaha produced them. I tried to run a National on my Cannondale and was turned away from Tech. inspection. I had to borrow a bike for the weekend. The 4-stroke nationals are a different story though. They had a few fast guys riding them there, there is even rumors that Robbie Reynard rode one a couple of times.