1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    WR = 2st Enduro & CR = 2st Cross

All 2st Carb replacement between Mikuni TMX and Keihin PWK

Discussion in '2 Stroke' started by MattR, Feb 23, 2010.

  1. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    I've noticed a few discussions about swapping the Mikuni TMX for a Keihin PWK carb. I tried some searches but did not find answers to the following questions:

    1) Does the Keihin PWK Air Striker 38mm carb fit correctly with the existing OEM air boot and reed valve manifold? Any fitment issues that require custom spacers, modifications, etc.?

    2) Any issues with mounting a PWK 36mm carb instead?

    Thanks!
  2. kx3089 Husqvarna
    AA Class

    Location:
    western pa
    Husqvarna Motorcycle:
    wr250
    direct replacement on 08 wr 250.Absolutely no fitment issues.I used a 1999 cr 250(HONDA)throttle cable,although I don't think it's absolutely necessary.
  3. kzoo Husqvarna
    AA Class

    Location:
    Michigan
    Husqvarna Motorcycle:
    WR 295
    Not on my WR250, put one on this winter. Still waiting to ride the bike with it though.
  4. ohmygewd Husqvarna
    Pro Class

    Location:
    Melbourne, Australia
    Husqvarna Motorcycle:
    13'Berg FE350, 96'WR360, 01 WR250
    Other Motorcycles:
    Aprilia RSV1000
    I have a 38mm PWK AS on my Wr360 and have had no issues. I must add that l'm bias with Keihins cos thats what l'm use to but it has transferred the bike and jets, needles and slides are more common.
    My last 360 has a TMX on it and l found that harder to tune than the Keihin but that maybe because of my knowledge of keihins.
    Issues:
    Had to use a throttle cable from a KTM300.
    Boots all fit.
    Using a 36mm instead of 38mm, the only issue is the 2mm restriction which will effect your boot.
  5. NWRider Husqvarna
    AA Class

    the 36mm, 38mm, and 39 all have the same outside dimensions.
  6. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    Thanks for the info guys!

    How many are using the PWK on the CR/WR 125's?
    Same consensus as the bigger bikes. :excuseme:
  7. NWRider Husqvarna
    AA Class

    I have a 36mm on my WR125. It was a big improvement.
  8. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    I just fitted a PWK 38 with JD jetting on my 09 WR125. Works great. Still sorting jetting a little but a lot less temperamental than the Mikuni and runs better off the bottom, better starting, smoother response. We will be selling these kits at Motosportz soon with info for the 125 and 250. It's good stuff. :thumbsup:
  9. nimiz1 Husqvarna
    AA Class

    Location:
    IL
    thanks but what to put in my 2009 wr125 the 36tmx or the 38tmx?
  10. nimiz1 Husqvarna
    AA Class

    Location:
    IL
    sorry i ment the PWK not TMX.
  11. highdez1981430cr Husqvarna
    AA Class

    Location:
    Yucca Valley,Ca.
    Hey Matt,

    You sould go to JDjetting.com

    Order the Keihin 38mm air striker, it comes jetted for your bike and comes with J.D.`s custom needles that are not GAY.

    Then order the power now plus (front and back inserts) and you will be TOTALLY AMAZED!

    USING THE SCARYFAST.COM INSERTS WILL GIVE YOU A .78MM SMALLER BORE SIZE GIVING YOU THE BEST OF BOTH WORLDS, KILLER LOW END AND EYE BLEEDING TOP.
    You will think that you put a 144cc kit in it.:cheers:

    Let me know how it works for you, and the carb with jetting kit is only $239 Bangin deal:thumbsup:
    Shalom
  12. nimiz1 Husqvarna
    AA Class

    Location:
    IL
    i do have a 144 EG kit on it.
  13. highdez1981430cr Husqvarna
    AA Class

    Location:
    Yucca Valley,Ca.
    Then it`s really going to rock!

    Got your PM Nimiz,
    Just tell J.D. what year,make and motor size and he will custom design a jetting kit just for you.
    All for just $239 with new carb
  14. rancher1 Husqvarna
    Pro Class

    Location:
    WA
    motosportz has them for 234 !!!
  15. motosportz mike CH Sponsor

    Location:
    Washington state
    Rancher you are correct we have the JD jetted carbs in stock and Kelly has added them to the website for easy ordering, and you save 5$.:cheers:
  16. WoodsChick Administrator

    Location:
    Oakland, CA Miramonte, CA
    Husqvarna Motorcycle:
    3 Terras, 2 `07 SM610s, `09 WB165,
    Other Motorcycles:
    KTM, GasGas, Suzuki, Honda
    Aaand you support a very passionate CafeHusky sponsor :thumbsup:



    WoodsChick
  17. highdez1981430cr Husqvarna
    AA Class

    Location:
    Yucca Valley,Ca.
    Ya, but you dont get J.D. personally providing you with the proper jets for your application.

    I.E. i have a 430cc husky vs a Husky144cc

    That $5 is the price of one main and you will be supporting a guy who has made his lifes work jetting carbs.

    Sorry woods
    Tochchey (spelling):thumbsup:
  18. motosportz mike CH Sponsor

    Location:
    Washington state
    Actually we can get the carbs from JD spec'd to whatever you like and they still come with a spare JD needle and a few alternate jets. We buy our carbs from JD he is still making money on them as well. Just thought you would like to know.
  19. highdez1981430cr Husqvarna
    AA Class

    Location:
    Yucca Valley,Ca.
    Good job Mike!

    J.D. is the man
  20. PC. Husqvarna
    AA Class

    Location:
    Beaverton, OR
    Husqvarna Motorcycle:
    CR165 & CR144
    Other Motorcycles:
    KTM500
    I finally got around to installing the PWK 38 on my 300 last night. Bolts right on, but the stock throttle cable is a little too long. I'll have to route it outside the number plate and hope it takes up the slack. Other than that it fits perfect.

    178mj, 45pj and whatever needle it came with(its a new carb from a 2000 CR250) #2 slot. Fires right up, idles perfect and feels more crisp and willing to rev vs. the TMX it replaces. Will have a full ride report after this weekend.