1995 YZ125 Powerband isn't as long as it used to be.

Check the compression. Sounds like there is a lot of bypassed gas.

wot do you mean by remove the powerband ? You can adjust it to come in sooner or later as required but its designed this way , get familiar in keeping the revs up above powerband and dont be scared ! P...

keep your foot clear of the shift lever. It cannot shifton its own because the gear train is under a load and more so when the power band kicks in.

HI MATE ON THE CARB THERE 2 SCREW ONE FOR IDLE AND ONE FOR MIXTURE THE MIXTURE SCREW WILL BE THE SMALLEST UNSCREW A 1/4 OF TURNS ALSO TRY CHANGING THE PLUG OK

plug

You can experiment with different expansion chambers. The cone shape of the chamber bounces a sonic shock wave back to the exhaust port. The wave forms a pressure "wall" at the port to "seal" the exhaust port so intake gasses don't escape. Change the wall timing and you change the powerband. This is the expensive way and with no guarantees. The bike may already have the best possible chamber.

I suggest you go a different route. Just go up about four teeth on the rear sprocket or down one tooth on the front sprocket. This will mean the bike will have a lower top speed but more torque and earlier powerband relative to mph speed. Bottom line is you will come out of the hole quicker with higher revs and reach the powerband sooner. The loss of top speed is overcome by the speed out of the corners. Generally, more time is spent in first, second and third than the brief moments spent in fifth or sixth.

Please consider a top rating for this solution. Thanks!

go to bike bandit for all parts.