Question about Yamaha DT 125 R Motorcycles

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I have a dtr 125 its bogging out before the powervalve has chance to kickin it revs fine in neutral but when i ride it i have to change gears quick and will only do about 45mph

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I have the same problem. i have recently bought a 1998 dtr, but when we had a closer look at the engin, it wasnt worth keeping. so managed to get a 2006 engin. i fitted this. but the bike seems reallys slow. I then opend the powervalve. but the bike boggs out just as i get in to the power band. i was told to re jett the bike to a 260. so will be getting that done soon. will tell you what it goes like mate.

Posted on Sep 03, 2009

  • gibson822
    gibson822 Sep 05, 2009

    Re jetted the bike today. running sweet, power band in every gear.


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Rebuild the power valve. Baring that, move the clip on the jet needle down one notch.

i have a dtr 125 its bogging out before the - bfa4ea0.png

Posted on Jul 28, 2009


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