ok firstly its a trail bike not a trials bike theres a big difference.these rx 50s use a motori minarelli am6 engine and they are very good.the let down of the engine is the pathetic carb they fit to them and the asthmatic exhaust system.so get a decent carb for it look on ve-uk website they will list a carb for it thats got a bigger venturi,also an arrow exhaust will help it if you also want to increase the top speed you need to buy a new front sprocket i would suggest a 2 tooth bigger front sprocket once you have upgraded the carb and pipe.
adam bike doctor, August 2010
