Long term KLX250S review

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

  1. TNC

    TNC Candyass Camper

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    I have an '06 KLX250 with a 300 cylinder, but we're talking fairly close stuff here. I have a Dynojet kit, as I feel the stock needle just has a bad performance profile. I have all the airbox mods with a full Muzzy exhaust. I think you'll find most any bike down on power when you start hitting the really high passes like Imogene...over 13K...and others, but good jetting at home usually works quite well with our CV carb setup...unless perhaps you're coming from sea level.

    Your pilot sounds a little rich to me. When I had the full Muzzy with all the airbox mods and DJ kit, I was running the OEM 35 pilot. When I went to the 300 cylinder I installed a 38, and it was too rich. I went back to the 35, and it was perfect. A Kouba air/fuel idle mixture screw helps a lot when you go to CO, because I find the idle to be affected the most when approaching the tops of the passes. I'm running a DJ main jet that is 128, but that jet doesn't exactly match the Keihin equivalent. Honestly, I think it's worth the money to get the DJ kit if for nothing else but the needle. Throttle response and the point on the needle for cruising is just better all around IMO. I still get great mileage too. I live at 1700' here in Texas, and I have never changed the jetting for CO on this KLX or my KLR600/650's with CV carbs in over 30 years of going there. If your jetting is clean and crisp at home in Ark, I think you should be fine. The down on power feel will occur regardless, but it should run cleanly. I think you can safely go to a 35 pilot for sure and maybe turn in the mixture screw when you get there.
  2. redpillar

    redpillar Been here awhile

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    I agree with Thad, My bike has the 351 kit ... I leaned the bike recently from a 38 pilot and a 142 keihn (132 DJ) to the stock 35 pilot and a 138 Keihn (128 DJ) I also installed the KLX 300 emulsion tube and I am getting about 18.5 km to a litre of fuel which works out to about 46 mpg, not that great, and the tail pipe is still pretty sooty. The bike has tons of power but I think I can lean it out another main jet size. I am at sea level but do most of my riding for the last few years at 5000 to 10000 ft.
  3. Dan888

    Dan888 Been here awhile

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    Bill let me start by saying that I have been inside my carb 2-3 times, I am no expert. :D but these are my experiences.

    This is my signature line over on KawasakiFourum.com - 2007 KLX, 351cc FMF Q4, N1tc needle clip on 2nd notch, Keihn #40 pilot, Keihn#135 main, idle jet 2.5 turns out, slide drilled, snorkel removed, No-toil hi-flofilter. This set up has worked very well for me from here in IL 750' to the top of Rocky Mountain Natl park 11,796' in Colorado. It may be a touch rich as I get a bit of soot on the pipe. I have thought about going down to the 35 pilot, but between being lazy and not wanting to mess with something that is running good, i haven't done anything yet. The bigger jets you mentioned may hurt you out there at elevation.

    The first time I took the KLX out to CO. years ago it was bone stock. I bought some smaller jets before our trip, and messed around with the different jets when i got there since the bike didnt want to start. I'm no jetting expert, and I had trouble getting anything to work untill I put it all back to stock and simply removed the airbox lid. It still did bog some at full throttle after that but was fine every where else, so i left it alone.
    Where are you guys riding? I'll be out there too, up by Rocky Mt Natl park. Just ordered my Latitude 40 map (thanks TNC)

    Dan


    Rollins Pass
    [​IMG]

    [​IMG]
  4. wswartzwel

    wswartzwel Unsafe at any speed

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    Thanks for the replies! Dan. we are going to the Top of the rockies BMW rally in paonia
    trailering across OK. the riding new mexico and CO.
  5. Dreamship

    Dreamship n00b

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    I'm looking to buy a dual sport but dang it, I am so short I don't know if I can touch the ground on anything. I am about 5'2" unless I've shrunk with my old age! lol....I was thinking of the KLX250, or can someone recommend a better bike size wise?
  6. BillMoore

    BillMoore Been here awhile

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    I have a KLX250S, and am 5'7" with a 30" inseam. At stock height, I could just touch my toes down. Mine has been lowered 1.5" (lowering links and a bar riser so the forks could be pushed up about 1.25" to match, then the rear spring adjusted to compensate for the resulting saggyness). Now I can flat foot both feet at the same time, but just barely, not much weight on my heels. I consider it perfect for me as it is now.

    My wife is 5'5", and rides a Honda CRF230L. Bone stock it is 2" lower than my lowered KLX. When I sit on it, my knees are actually bent with both feet flat. And there is a lowering kit available for it, that will drop it another 2", but if you go that route, your ground clearance will be pretty bad.

    Another factor is your weight... I'm a whopping 140 lbs, and see guys my height claiming the stock height KLX works just fine for them. But at my weight, when I sat on the bike at stock height, the seat didn't even sag half an inch, and the suspension felt as hard as a rock. Lowering the bike softened the suspension a little too much, but that was fixed by adjusting the rear spring sag (which also caused me to lose about 1/4" of what I had gained by lowering), and now the sag when I sit on the bike is about right.
  7. 250senuf

    250senuf Long timer

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    Take a look at the Kawasaki Sherpa, Yamaha XT 225, Yam TW200.
    There is a thread on this forum somewhere re bikes for short riders. I'll try to find it and post the link.
  8. Dreamship

    Dreamship n00b

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    Thanks for the info!
  9. Dreamship

    Dreamship n00b

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    I will definitely check these out!
  10. rickypanecatyl

    rickypanecatyl SE Asia adventure tours

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    The tallest of the KLX250 family is the 06/07 enduro. My wife at 5'5" can't really get a tip toe on the ground but is close.
    The 09 and newer models are about 1 1/2' shorter.
    You'll lose another 1 1/2" if you get the D-trecker (17" "super motard" wheels); you can put some semi off road tires on those but not too aggressive.

    The shortest KLX I can think of would be one of the new bodies (09 and later), with 17" wheels, 2" kouba lowering links, forks thru the triple clamps and seat cut down an inch or so. That would be slightly lower than a Honda CRF230L.
    I'd probably go with the Honda though as what I just described is playing with the geometry quite a bit. Besides the Honda has a shorter wheelbase and you can get away with less ground clearance with shorter wheel base.

    The 230 also has loads of torque off idle which is great for beginers. It even beats the KLX250 and the WR250 torque wise just off idle.
    The KTM 350 freeride is almost as short as a Honda 230 + it's nearly 50 lbs lighter than a KLX250 making it even easier to handle. There just coming out in Malaysia though (meaning probably another 2 years in the US :lol3) and are a chunk more expensive, + going off just the maintenance schedule it doesn't look like they'll be in the same league reliability wise.
    Honda also just released the CRF250L which is a bit shorter than the KLX though heavier...
  11. EMSrdr

    EMSrdr n00b

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    I purchased a KLX 250 last year that was already lowered and had the seat cut.. I am 5'2 as well and am still tippy toed on it.. I am having a ball riding it but a bit tricker off road on tough terrain. I have laid her down a few times and when we are going over real rocky places where I have only holes to put my feet into if I need help I push it or my BF takes it for me. I have riden on road bikes for 10 years but getting used to off road is so different. I would not change this bike for anything. this forum is great for help and great advice. each ride I take its easier and easier more confident also. I just need to get the stand cut down so she doesnt stand straight up parked. I am hoping to be able to use a flat foot on it but I am not finding where one is made for it. Mind you I am still learning a more aggressive form of riding that I have been used to but I am hooked!!! And I am 50 years old trying a new sport!!! I also just purchased a new versys where I am tippy toed on it, but this is a bigger bike and have lowered it and will be modifying this seat.. but I dont see myself taking this one out where I take the klx250..
  12. Prophex

    Prophex Adventurer

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    1. What is the best offroad (but still street legal) tire for this bike ? And which is the best 'bang for the buck' ?
    2. The stock front sprocket is 13T and rear is 42T. 42 is devidable by 13 and equals 3. Some people told me this is bad for wear on both chain and sprockets. Is this correct ? Are you better of with for example a 44T on the rear giving 44/13 = 3,384615384615385.. ? So that way all the links will run over all of the teeth.
  13. 250senuf

    250senuf Long timer

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    The selection of tires in Europe is different than North America. You can get some we never see. Tire threads and oil threads never end. There is no one "best" tire, it all depends on the conditions it's used in.
    Stock gearing on mine was 14/42. Run the gearing that works best for what you are doing with the bike. I put a 13 CS on mine to "tune" it toward off road.
  14. markk53

    markk53 jack of all trades...

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    When it comes to best bang for the buck dual sport tires I am on board with the Duro Median HF903/904 at about $120 for the pair. I've run them over the past ten years and 30,000 miles on my KLX650. They stick as good as Avons on the pavement, but get really good traction in dirt. If they do the right size rear tire for the 250 I'd recommend them highly. One of the best parts is that they are cheap enough that you don't feel particularly bad replacing both at the same time and doing so before they're totally bald. The tread has an interesting web design between the knobs running from side to side. It cuts down on the knob flex when cornering, but the tread depth is still there across the tread, making it sort of a paddle effect.

    Again, I know there will be those who disagree and that's fine. I just know this has been a fantastic tire set for me, getting traction wherever I've gone with friends running other tires (some being rather costly), so I haven't bothered trying anything else.

    I wouldn't get too shook up about the chain thing, you might gain an exta hundred miles or something. I've never read or seen anyone having problems with the even tooth count thing. It is more theoretical than real. I'm thinking you will trash the chain out due to dirt and crud long before any tooth count contact comes into play.

    When it comes to gearing though, the trick is to be as versatile as possible.

    I'd recommend getting a good street gearing using the biggest front sprocket you can get, maybe 17 or 16, which ever is biggest possible, then size up a decent size rear sprocket. Using a 17/51 or 16/48 gives just a shade higher gearing than stock, which is good for road use, maybe even go to a 17/48 or 16/45. The idea being you can run a road gear then swap the front sprocket out for a 14 or 13 to have some serious lower gearing for some actual back country or off road riding. I used to swap out front sprockets on my old MB5 and Bultaco Sherpa T. One tooth made some serious differences.

    As for the whole tooth count thing, don't sweat it.
  15. IDRIDR

    IDRIDR Take me to the River

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    Never heard of a stock 13 CS on the KLX250 '06 to current. All 14 that I know of. see gearingcommander.com for your 13/42 wear issue, which is correct I believe, but will it make a noticeable wear difference on this bike? I don't think significantly so.
  16. wswartzwel

    wswartzwel Unsafe at any speed

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    Are there any mechanical issues that I should be aware of on a 2006 KLX250S with 6600 miles on it?
    My son and I were planning to trailer our bikes to Colorado, but he says he wants to ride out there and back... 1,100 miles each way. His bike is in good shape, uses no oil, but I wonder what kind of longevity those little engines generally have. I know he revs it pretty good to keep up with my KTM on the highway running 75 mph. Should I tell him we are going to trailer? Or go with the adventure ride. Probably will take highway from Arkansas, across Oklahoma to New Mexico, then mix in forest and gravel roads through New Mexico and Colorado.
  17. TNC

    TNC Candyass Camper

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    Ouch! Well, people are really different, but man I'd rather take a beating with a hot motorcycle chain than ride a KLX250 across that stretch of country. I think the bike can handle it, frankly, but I'd have different gearing for the long stretch there and back. Then you'd need to change it back for off roading in CO for sure. Man, I'd talk him out of that if you can. The bike will probably survive fine if geared within reason for the highway, but it will still be wrung out quite hard if you're going to do 75mph. It's just not the bike for that kind of travel...at least not anything close to really enjoyable. Where will your travel gear be for a trip like this? There's one thing in and of itself when it comes to doing a trip like that...gear, clothes, etc. It's hard to beat when you have your vehicle loaded with enough stuff to make the trip more enjoyable. Plus, you know you'll burn a lot good tire rubber on that much highway mileage for no good reason other than to say you did it. I go to CO every year also, but I trailer there in my van. I camp out of the van and can be totally self-sufficient for days at a time. That's harder to do off the bike...especially a small one. You may find your options much greater if you haul your stuff up there with the trailer deal. But hey...it's y'alls trip. Have fun which ever way you go.
  18. 250senuf

    250senuf Long timer

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    Has he done many highway miles with it? Day after day? 1,100 is quite a haul, he might be wishing you'd trailered part way there. I say save the little pony's legs for the fun stuff. You've got the trailer set-up: use it.
    Just some guy's 2 cents.
  19. djchan

    djchan Long timer

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    By the time he gets there - the last thing he'll want to do is ride that damn thing. Save it and enjoy some good conversation in the car.
  20. wswartzwel

    wswartzwel Unsafe at any speed

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    Ok... Let me re state the question. :D How many miles are the KLX250 engines good for before things start breaking inside the engine? Any high mileage guys out there.