Long term KLX250S review

Discussion in 'Thumpers' started by bmwhd, Dec 2, 2005.

  1. Greeves TFS

    Greeves TFS Old Trials Rider

    Joined:
    Jun 23, 2006
    Oddometer:
    8
    Location:
    Houston
    Just got one! Now waiting for the breakin to be done. So much lighter than my old DR-350!:rayof
  2. yater

    yater Long timer

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    Oct 10, 2004
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    Texas
    I have lots of miles on dr350s. How about a comparison?
  3. Greeves TFS

    Greeves TFS Old Trials Rider

    Joined:
    Jun 23, 2006
    Oddometer:
    8
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    Houston
    One thing that I really like is that I can actually stand up on it. My 94 DR was pretty wide and just didn't feel right standing up. I loved my old DR and not knocking it just it seems like night and day concerning the weight. I hope to get a few miles on it before I head for the woods.
  4. backwoods

    backwoods Field & Stream

    Joined:
    Jun 24, 2006
    Oddometer:
    16
    Location:
    Maine
    Can anyone tell me if someone posted they had done all the mods but kept the stock exhaust and drilled it out with 1/2" bit. I don't care about the Muzzy being louder and lighter, I only want the performance enhancement. Is it a combination of light, louder and performance, or is the performance of the Muzzy the biggest reason. I would save $400 if the stock system is about the same perfromance drilled out.

    Backwoods
  5. tipstall

    tipstall Been here awhile

    Joined:
    Oct 25, 2005
    Oddometer:
    221
    Location:
    Crystal Lake, IL
    I have done all the mods except pop for the Muzzy. I need to do it as the bike needs a little more. The mods helped the low end alot. I'm hoping the Muzzy will help the mid/top end.
  6. a16tony

    a16tony Been here awhile

    Joined:
    Feb 26, 2005
    Oddometer:
    557
    Location:
    Everett, WA.
    128 jet
    high flow snorkle
    stock needle, lifted with two washers, and drilled slide
    drilled stock pipe
    stock crankcase vent
    stock emission crap
    14/48 gear set
    Acerbis 300 tank.

    My bike runs fantastic. It will sustain 85mph(indicated)@ 9500rpm in most cases, and still gets 50-60mpg hiway and 46mpg single tracking.
    When I drilled my exhaust I had to change the 125 to 128 jet, FYI. Does this help?
  7. backwoods

    backwoods Field & Stream

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    Jun 24, 2006
    Oddometer:
    16
    Location:
    Maine
    That's great news a16tony. Did you try the #125 jet?
    I will be doing the exact same mods and hopefully will see a noticable diffrence. It looks like I'll have to order the #128 jet now.

    I need to thank a pile of people on this forum for all their info & pics. The pics are priceless for someone like me who isn't a mechanic type. A couple of people I talked to have been qouted as saying the KLX250s is almost undriveable as stock.

    backwoods
  8. nobrakes

    nobrakes Long timer

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    Jan 19, 2006
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    North Carolina
    Folks here were quite helpful to me when I was stumbling around in the dark on this also.

    I didn't really find that to be the case. I guess it comes down to what you were used to before. This is my first bike in about 15 or 20 years and before that I rode < 100cc trail bikes of various types. Even stock, this bike was quite a huge step up from those days. :D So you can see where I was quite pleased at first. I guess since maybe it looks so much like a hopped up dirt bike folks are expecting KX250F performance. It's surely not that! But it is not unrideable either - at least I didn't think so. I had a blast on my KLX even before making a single mod.

    But soon you get used to the way things feel and start looking to improve - it's only natural. I was hearing about what a difference a few simple mods made, so I thought, what the heck, I can afford the $40 of parts required to rejet, snorkel, and the free drilling stuff. But I'll admit that I was quite happy before doing any of that. But once you start, beware - it is addictive. After those first mods worked out so well and the novelty began to wear off a bit, the Muzzy starting looking pretty darn nice. And then that was even better, and life was good. But then the 300cc upgrade started whispering to me from the silvery mist of my dreams. Who could refuse whispers from dreamy mist? I succombed. So what's next? Pumper carb? Maybe. Overbore the 300cc to even larger displacement? Perhaps. Perhaps. I've decided I'm going to try not to think about it too much, because once I start thinking about it, it starts calling me and before long I _must_ have it and my every waking thought centers around that next upgrade until I am fully consumed and immersed and the only way out is to upgrade!

    That's the great thing about bike ownership - you get to make it uniquely suit your style and needs and on your own terms and time frame. Do as much or as little as you want, when you want to do it. Even if it does become an all consuming obsession :evil
  9. bmwhd

    bmwhd God Bless Texas

    Joined:
    Dec 15, 2003
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    1,476
    Location:
    Texas
    I found the addition of the Muzzy on top of the other mods is what put the bike over the top for me in terms of enjoyment. It just looks, sounds, and performs so fine now I'm not even tempted by the 300cc kit at present.
  10. MaverickAus

    MaverickAus Long timer

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    Dec 25, 2005
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    that statement about the KLX being almost undrivable stock is the biggest load of :topes I have ever heard and I'm getting sick of it. The bloody bike is fine for WHAT IT IS DESIGNED FOR !!!!!!
    Fine if you wanna make it go better etc etc thats great go ahead, but as it is the KLX is fine by me.

    Rant off

    P.S. backwoods I'm not having a go at you just those who tell people this pile of :topes
  11. backwoods

    backwoods Field & Stream

    Joined:
    Jun 24, 2006
    Oddometer:
    16
    Location:
    Maine
    Appreciate the replies. I owned 3 new HD's in the last 5 years with all the mods and I need an adjustment period. I bought the KLX250s because l like the look and it meets my purpose, to ride with my son on his 90cc. I need a little more power and know the mods will fill my need. I'll let everyone know how I make out when all the parts arrive. I won't be installing them myself.

    backwoods
  12. KLX X 2

    KLX X 2 Randy

    Joined:
    Apr 14, 2006
    Oddometer:
    17
    Location:
    Cambridge Ontario Canada
    Here is a shot of my KLX with the new signels and tail light. I now have removed the " fender extender ". I think the bike now have more of a MX look.

    Randy
  13. Nobiman

    Nobiman Orange... the color of insanity.

    Joined:
    Apr 20, 2005
    Oddometer:
    732
    Location:
    La la land... republik of Kalifornia.
    Hey Randy, Randy here. I gotta say that is one slick little mod you've done there, me likey:clap . How 'bout posting the brand, part # and the place of purchase of the above mentioned tail light just in case someone might want to copy you (not me of course:lol3 ).

    Nice work dude!

    Randy
  14. KLX X 2

    KLX X 2 Randy

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    Apr 14, 2006
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    Location:
    Cambridge Ontario Canada
  15. tremor38

    tremor38 Long timer

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    Japan
    Question for anyone who has installed the KDX200 high flow snorkle: Does the induction noise increase appreciably?


    Thanks.
  16. MaverickAus

    MaverickAus Long timer

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    Nice work Randy that looks good
  17. Crusher

    Crusher n00b

    Joined:
    Jan 27, 2006
    Oddometer:
    1
    Question;

    I just recently sold my BMW F650GS (first bike, had it for 4 years) and purchased a new KLX250S. Found out I was pregnant at about the same time. Hence: I've only been out on my shiny green beast a few times. But I've noticed that even after about an hour ride in the summer heat the rad fan has never once come on. On my BMW the fan was always quick to come on in this kind of heat. I don't pretend to be the least bit mechanically inclined, but have any of you noticed this? And would you consider it normal or odd?

    Would appreciate some feedback, thanks.
    Crusher
  18. tremor38

    tremor38 Long timer

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    Mine doesn't come on very often at all compared to other bikes I have owned. I don't know what you meant by "this kind of heat," but I ran my bike for a couple of hours in 28C temp the other day and the fan very rarely came on but turned off within about 30 seconds. It never seems to stay on any longer than that, so maybe this bike just has a very efficient cooling system. If you think about it, there's not much to cool off.
  19. nobrakes

    nobrakes Long timer

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    The only time mine generally comes on is when I'm going slow and working the engine pretty hard, like bushwhacking where there's no trail, and the going is slow and arduous. As long as there's air flow over the radiators, my fan never runs.
  20. dirt king

    dirt king Luke AFB Arizona

    Joined:
    Jun 1, 2006
    Oddometer:
    21
    Location:
    Googyear AZ 85338
    Hey has any one mest around with putting a bigger gear on the front or a smaller gear on the rear. 16 in the front or a 38 in the rear for low rpm's haven't heard of anywhere to by gears for the rear only the front. I bought a 13 tooth for the front and went from 60mph at 6000rpms to 6800rpms at 60. has anyone noticed that when the spedo is at 65 you are only going 60. These rpms seem too high 6800 at 60mph for long riding trips (200 miles or more) seems that if one could gear it right around 4000rpms at 65mph that would be ideal for crusing on flat ground on the hwy/freeway. tho this will be very gutless on the trail and would not work at all you would have to switch out the gear but that is very simple. Do I need to change my gears or are these rpms ok for that kind of long trip journeys

    THANKS any help would be great:dunno