I am a great fan of RX series. Recently I bought a RX 135 4 speed. I wanted to upgrade the transmission to 5 speed. is it possible? I mean is there are any side effects on engine or overall performance of the bike? also I would like to know whether upgrading to 5 speed gear helps in better mileage?
I would really appreciate your feedback on 5 transmission and to keep better performance of engine. Thanks :)