250's not bad at all for sub 65mph work but a 450 if it's only a small weight penalty would make the RX3 shine bright amongst a larger group of riders. With a 450 you should get excellent performance to 85mph or so which means lower RPM's and a comfortable cruise on the highway which would eliminate the only weakness the RX3 has. I'm positive a 450cc similar design wouldn't weigh much more than the current 250cc.
The ADV world has been drooling for a 450cc bike for a long time now.
|