I asked this question else where and this thread appears to have given me the answer. I asked if the speedbrain bikes used a cush drive...the photos in this thread seem to indicate they did not. It has been my understanding that cush drive was always a given for rally bikes, or is this only on the larger capacities?
How many of the 450s of other makes ran cush drives...any?
I also heard somewhere that Verhoven's 450 had a 6 speed box, he was clocked with the highest speed on the last stage. Any insights here would be useful.