DR250 - Under-powered?
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  1. #1

    DR250 - Under-powered?

    I just bought a s/h imported Suzuki DR250S (I'm in the UK and this
    is a Jap import). It's in great condition and all appears to be OK
    except a couple of things. Whilst the bike seems to run fine, it
    does seem a little under-powered to me, but I'm new to this so I'm
    not sure. On the flat (road) I can hardly get the bike over
    60mph...surely it should go somewhat faster than that. Now, to be
    fair, I do weigh in at 220 pounds, so this will of course have some
    effect...but 60mph...it's got to be better than that?

    One other thing, when I dethrottle, the revs do not always die off
    properly - I've checked the throttle cable and this is returning
    correctly, so I assume it's something to do with the carb. I'm not a
    mechanic but keen to learn, so bear with me if the answer is obvious.

    Any answers/suggestions (and don't say 'lose weight'!!)would be
    greatly appreciated.

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  3. #2
    Where Am I ?
    Central IL


    It sounds like the carb could use alittle tuning. I ride a 1990 DR250 and the max speed is about 70mph. The 250 is not a real powerful bike to begin with. There are mods you can do to increase power, like air box mode, jetting change and hi-performance muffler.
    DR250S All stock

  4. #3
    Have it re-jetted.

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  6. #4
    I own a DR250s 86´ and with my 70kg it reaches the 125km/h (78mph).

    There are some questions I have, because there is´t much to find abut this bike in the internet.

    My bike´s power is reduced to 17Hp. How? Carb, exhaust?

    The Power of the "open" Dr 250S?

    Does any one know some good informative sites about this bike?

    thank you.

  7. #5
    evs is offline
    Here's an airbox modification for the DR350
    I'm gonna do it to my '92 DR250s (jap import with upsidedown forks and silly height control)
    They've also got a mod for the stock exhaust.. which entails replacing the stock baffle with a wider one.. you gotta love cheap tweaks eh!

  8. #6
    rex is offline
    I aslo have a DR250SH 1990 with dual hight control just purchased it have you any info on how it works it has air valve at back what preasure the front forks don't seam to adjust hight the same as the back it is in good condition only got 4000km jap import to NZ

  9. #7
    Seat Tester
    Try this site:

    They have good hints for mods. Followed the ones for my wife's DRZ125L and my son's TTR90E. I just did a search with keywords '250' and 'mod' which brought up that list. Hope it helps.
    2004 RM250
    2004 DRZ125L
    2006 TTR-90E
    2004 JR50
    1993 RM250
    1990 KDX200

  10. #8
    My Bike(s)
    1990 suzuki dr250s
    i have a 1990 dr250s and i can cruise at about 85mph my top is about 98mph. the dr250s is fster than the dr250 because the dr250 was meant for a dirtbike and the dr250s as an enduro. so there is a sprocket size difference. the dr250 is alot bigger, the bigger the sprocket the better the take off but the lower the top speed. my revs dont die off all the way all the time either, they drop to approx. 5000rpm. then just bump the throttle and it will drop the rest of the way. i weigh 190 so your 220 isnt the problem. it could just need a good carb cleaning and check your air filter.


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