Please help

[Randy11023]

I know you have some topics on this. I just wanted to know what is good setup? I have a 2003 yz125 I been though 1 year of racing. I have a PC pipe and the stock silencer on it. I been running the stock gearing 13/49 but this year I was going to try the 13/50 see if it help me get the power out of courners. I also read that changing the stock power valve spring to the 2000 spring will fix the died spot in mid range. (heard that from pro circuit) I am change the top-end again to a another fresh wiesco top-end. Any other tips?

Thanks alot

Randy

 

[XRpredator]

moved. hope you'll find more response in here.

 

[marcusgunby]

sounds like a very good plan to me-let us know how it works.

 

[ukracer]

Instead of changing the pv spring for a 2000 model i believe you can get shim/washer to add to existing pv governor to do the same job. These are available from pro circuit as i bought one but never fitted it. Not sure which option is better or cheaper for you but thought might be of some help.