[Racer x]

Thanks ,that is interesting. And it shows how well the 250 ninja is designed.

Kawasake was interested in a learner bike. And wanted to improve ride ability for new riders by increasing bottom end torque while meeting stringent emmitions.

I think they did a great job at that. Unfortunately the did so by decreasing volume and increasing velocity of the air fuel ratio.
Small valves and a converter make the top end power much lower that it could be if they intended to build a race bike.
All these numbers are for a low compression engine with street fuel.

These bikes have potential. As we can see.

Speaking of which. Let's see some pictures.