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Technical Zone

Need Information on a Specific Part? Post Here!
1.3k Topics 11.2k Posts

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  • Suspension Related
    95 748
    95 Topics
    748 Posts
    L
    Hey i recently bought a dt125x and I need to replace the fork seals but can't find any information about the real size, many forums and sites have different mesurements so I figured the easiest would be to ask here

  • Exhaust Related
    60 550
    60 Topics
    550 Posts
    CalumC
    [image: 020dvoy.jpg]

  • Framework Related
    82 589
    82 Topics
    589 Posts
    CalumC
    Cheers @HOTSHOT-III

  • Wheel Related
    79 726
    79 Topics
    726 Posts
    mbmO8M
    Thanks so much, I managed to figure it out but Now I'm dealing with my own front brake problems haha

  • Electric Related
    250 2k
    250 Topics
    2k Posts
    C
    I have tried another CDI still no luck. No servo cycle and no spark. I have tried three different stators and same result. Because the replacement bits I .trying are second hand I have now way of knowing if they are ok. Is there a way to work through the bots one by one. For example can I connect the servo to the battery somehow to see if it works? I can turn it by hand so it's not seized. I don't understand why servo and coil not working. Please help.

  • Brake Related
    66 441
    66 Topics
    441 Posts
    CalumC
    Well are you sure it's beyond repair? I mean it has to be pretty bad for that to be the case?

  • Engine Related
    532 5k
    532 Topics
    5k Posts
    mbmO8M
    I’ve tried another cap ( an old one that came with the bike as the bike came with 2 boxes of parts) and it seams to be worse so I think that shows both caps are bad and the og one wasn’t as bad Thank you very much
  • G

    Tacho reading 1500 when engine not running

    3
    0 Votes
    3 Posts
    514 Views
    G
    Hi, okay, thanks @declan - may try and get it open , knowing there will be a backup plan!
  • B

    Dt 125re No power.

    4
    0 Votes
    4 Posts
    541 Views
    declanD
    @Baileyboy2008 well like Calum pointed out there’s no such thing as pinning your valve half way if the valve is have way closed you will get zero power above 6k open her all the way and then see what it does
  • DartyD

    The Library

    dt125r dt200wr wr200
    5
    5 Votes
    5 Posts
    959 Views
    NottsbikerN
    Yes very rare now and you have to hunt high and low to find anything at sensible prices I'm afraid
  • D

    Dtr 125 pressurizing problem!

    9
    0 Votes
    9 Posts
    954 Views
    CalumC
    Pressure Cap! I wouldn't believe it but I have seen it a few times. Always start off with something cheap and look at the more expensive items later.
  • Ryan FR

    Bike lacks power

    27
    0 Votes
    27 Posts
    3k Views
    CalumC
    @Oisin You tried searching? https://dt125r.co.uk/topic/578/derestricting-guide
  • B

    Still no spark on my DT125RE

    9
    0 Votes
    9 Posts
    730 Views
    CalumC
    Measure across the pick up sensor. Make sure that you are getting current to trigger the CDI. You will want to follow that pulse from the pickup to the CDI. From the CDI you will see it go to the primary coil. From there it should go to the secondary mutal winding and out to the HT lead. It's as simple as that. Somewhere you are losing that signal.
  • riley_racerR

    Stickers/Decals

    14
    0 Votes
    14 Posts
    1k Views
    riley_racerR
    @oldman just had a quick search, looks ideal, cheers mate
  • V

    Why does it do this?

    7
    0 Votes
    7 Posts
    628 Views
    V
    @markus-w thanks
  • V

    Should theese jets fit my yamaha dt 125 x 2006 witk mikuni tm28-92 carb (stock carb)

    1
    0 Votes
    1 Posts
    355 Views
    No one has replied
  • J

    Dt125re 2004 servo

    servo
    11
    0 Votes
    11 Posts
    921 Views
    C
    so @Jgb19830 did you fixed it,just by that? i have the same problem.
  • 2

    This sounds like bottom end bearings right?

    4
    0 Votes
    4 Posts
    443 Views
    CalumC
    Well you should have checked the bearings at the same time. For up or down play.
  • W

    HID headlight conversion

    6
    0 Votes
    6 Posts
    573 Views
    NINJAN
    @ward4014 Just fit some brighter bulbs for a super easy and cheap upgrade; https://www.ebay.co.uk/itm/2-x-H5-P45t-Birnen-Halogen-Auto-Lampen-6000K-60-55W-Xenon-Weis-12V/362660604593?hash=item547041aab1:g:GEkAAOSw~dJdNZD9
  • W

    New piston but no rebore

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    0 Votes
    4 Posts
    498 Views
    W
    Thanks guys I'll take it to the shop once I have it off I'm only changing the piston because I have never changed it it rides mint but just peace of mind
  • W

    How does the oil get into the gearbox side of the engine

    5
    0 Votes
    5 Posts
    489 Views
    W
    @Calum I have had the clutch cover off everything looks good tbh
  • W

    Reset milage to 0

    4
    0 Votes
    4 Posts
    486 Views
    CalumC
    My aftermarket clocks reset to zero. Now my mot history is all over the place. I don't intend on selling the bike so makes no odds to me. Would be nice to see how many miles I have done in ten years though.
  • P

    General maintenance

    7
    0 Votes
    7 Posts
    706 Views
    CalumC
    @panmil92 I don't recall there being any certain type of weak point. Fairly bullet proof motors. It's just general items. Bearings, bushes and seals.
  • J

    Piston play

    2
    0 Votes
    2 Posts
    403 Views
    J
    https://youtu.be/p5XOQFRJzko Here it is running... Story is it overheated on a ride out due to an airlock in the cooling system. So the piston went pop
  • S

    2007 dt re blue frame colour code??

    3
    1 Votes
    3 Posts
    663 Views
    declanD
    @Minia I believe it’s on the frame tube under the rear of the mudguard
  • D

    reeds confusion ??

    5
    0 Votes
    5 Posts
    638 Views
    D
    @Calum said in reeds confusion ??: @Dingle74 I'm sure there is information on here about what can be used. Try using the search bar.. good pointe with the searchthing , but the searchfunction is not my new freind :crazy_face: when searching for reeds i get everything from pics of cracked seat to chain and wheel-questions :face_with_hand_over_mouth: so have just skimmed over lightly there was one post though sayin that wr dont fit and poster wanted to show a pic of the difference but sadly it didnt work for him
  • S

    Clutch lever and brake levers

    11
    0 Votes
    11 Posts
    1k Views
    F
    I've got some eBay specials on mine, they were listed for the DT230 but fit ok. Might fit the DTR as well?