By: news (offline) Wednesday, 04 September 2013 @ 10:45 AM ICT
The Honda CB300R as they sell it in Brazil is only 0.5 horsepower stronger than the current Honda CBR250R. Also as said it's a completely different engine with air-cooling.
I not think that Honda will use the Honda CB300R as basis for upgrading the CBR250R. The possible new Honda CBR300R will likely replace the Brazilian made CB300R in some territories (like the Arabic Emirates) as Honda now-a-day like to rely on global models to reduce cost.