hi i have a vxr 200 and it has a flat spot at 55/60 mph i have put a new cdi unit on it, a new coil pack ,a new inline filter, a new fuel tap and had the carb stripped and clean a couple of times, i have drained the tank and re-filled it with fresh petrol, it does have an after market exhaust (scorpion i think)but i believe the jets are the right ones for the exhaust ..... please help it driving me insane lol

dominic mckay, June 2010

the scorpion pipe is CRAP for this bike they run like crap should have stuck to leo vinci 4 road, you NEED bigger jet, what make of carb is on it and ill tell you what size to get and where fromm

m, June 2010

so what size is the standard main st and what main jet have you got in it to compensate for the free flowing exhaust pipe.

adam bike doctor, June 2010