Hellow,

My TZR does around 150kmph. I need to get bit more. So anyone can help how I can get that?

I mean any modification to the engin or current system?? (Like fit another coil pack or something)

please help.....

thanks..

First off its good form to post an intro.

Second. Your complaining that a 90mph 125 isnt good enough.......struth.

Hi Cynic, - Many thanks.....

have heard that YZ coil pack suits to TZR as well & can make a good acesalaration.

anyone has any idea about that??

thanks...........

you must go and make a new member post..

go here..

http://yamahaclub.com/forums/forum/48-new-members/

make a hello post..

done a small introduction......

You won't get more than 90 on a TZR 125.

If you do not want to do modification of the engine, you can made modification on chain transfer system. If you add smaller sprocket at the rear (one or two teethhs smaller) , you are changing the power transfer ratio, and you can achieve higher speed. But engine torque and acceleration will be (slightly) decreased. Also chain need to be modificated, if you added smaller sprocket, current chain will be very long (remove some pitch is a solution).

If you add bigger sprocket at the rear, motorcycle will have smaller top speed, but torque and acceleration are going to be encreased.