The purpose of this hybrid prototype is, to create an outstanding 2-Stroke supermotard, uniting a supermotard with a pure GP 2-Stroke engine.
So, we picked up our Honda CRM 50 chassis whose weight is equivalent to a 125cc trail like Honda CRM 125 or Yamaha DT 125R, with an approached weight of 100 kg, and assembled the Yamaha DTR 125 engine .
The only Yamaha DTR 125 parts in the engine are the crankcase, the crankshaft and the cylinder. The Yamaha TZR 125 parts later installed are the gearbox sprockets.

Now we pass to the study of the Honda CRR (TZR 125 gear box), from which we can take many conclusions about the performances and losses between gears in a percentual way.
So, we now give the graphic relative to the Jumps/Losses Between Gears (%) for the Honda CRR:

As we can see through the Graph "Jumps Between Gears (%) Honda CRR", that the gearbox is very nice for top speed, the first gears are somehow long, then the 3 last ones are very short. As we can comprove by the Graph, the Jump/Loss between 5th and 6th gear is 9.10%, a good value for this kind of engine tuning, as we know in street bikes/GP bikes, the gearboxes are very close ratio to prevent breakings between gears.