Skip to content
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (Slate)
  • No Skin
Collapse
Brand Logo

DT125R FORUM

  1. Home
  2. Technical Zone
  3. Suspension
  4. Progressive fork springs?

Progressive fork springs?

Scheduled Pinned Locked Moved Suspension
22 Posts 6 Posters 2.3k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S SpookDog

    @Calum

    I actually didn’t think to contact them 🥴

    Waiting on a fleabay reply now. I asked about length & width and rating...

    HOTSHOT IIIH Offline
    HOTSHOT IIIH Offline
    HOTSHOT III
    wrote on last edited by
    #12

    @SpookDog According to Haynes:

    3DB1 ('88 round slide carb model) spring free length 478mm, service limit 473mm

    3RN1 ('89 onward) spring free length 503mm, service limit 468mm

    No mention of forks in the separate chapter for the '97 onwards DTR and DTX so I can only assume the springs are identical to 3RN1 (although I'd be interested if this is the case particularly regarding the DTX)

    markus.wM S 2 Replies Last reply
    0
    • S SpookDog

      @Calum

      I actually didn’t think to contact them 🥴

      Waiting on a fleabay reply now. I asked about length & width and rating...

      CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #13

      @SpookDog And according to fowlers the springs between the two models are the same.

      https://www.fowlersparts.co.uk/parts/4189524/dt125re-1d02-2005-030-a/front-fork

      https://www.fowlersparts.co.uk/parts/4159458/dt125r-3rme-1999-060-a/front-fork

      SPRING, FRONT FORK
      3BN-23141-01

      Always Originate, Never Pirate!

      markus.wM 1 Reply Last reply
      0
      • HOTSHOT IIIH HOTSHOT III

        @SpookDog According to Haynes:

        3DB1 ('88 round slide carb model) spring free length 478mm, service limit 473mm

        3RN1 ('89 onward) spring free length 503mm, service limit 468mm

        No mention of forks in the separate chapter for the '97 onwards DTR and DTX so I can only assume the springs are identical to 3RN1 (although I'd be interested if this is the case particularly regarding the DTX)

        markus.wM Offline
        markus.wM Offline
        markus.w
        wrote on last edited by
        #14

        @HOTSHOT-III I believe the DTX has shorter stiffer forks.

        1 Reply Last reply
        1
        • CalumC Calum

          @SpookDog And according to fowlers the springs between the two models are the same.

          https://www.fowlersparts.co.uk/parts/4189524/dt125re-1d02-2005-030-a/front-fork

          https://www.fowlersparts.co.uk/parts/4159458/dt125r-3rme-1999-060-a/front-fork

          SPRING, FRONT FORK
          3BN-23141-01

          markus.wM Offline
          markus.wM Offline
          markus.w
          wrote on last edited by
          #15

          @Calum yes they are identical. Just the 1988 early model are different as are the DTX. R and RE are the same.

          1 Reply Last reply
          0
          • HOTSHOT IIIH HOTSHOT III

            @SpookDog According to Haynes:

            3DB1 ('88 round slide carb model) spring free length 478mm, service limit 473mm

            3RN1 ('89 onward) spring free length 503mm, service limit 468mm

            No mention of forks in the separate chapter for the '97 onwards DTR and DTX so I can only assume the springs are identical to 3RN1 (although I'd be interested if this is the case particularly regarding the DTX)

            S Offline
            S Offline
            SpookDog
            wrote on last edited by SpookDog
            #16

            @HOTSHOT-III
            That’s a typo for the 503mm spring wear limit, it’s supposed to be 499mm. Hell of a wear limit otherwise!.
            I read somewhere that dtx springs are 515mm and progressive as standard. Probably the same as TZR springs if the info was right...

            Got a reply from fleabay: not in UK stock, 40-45 day order wait. Springs are 515mm x 3.9mm and are rated for 65-110kg weight riders...

            Sounds perfect, just have to trim the spring spacers by 12mm. Shame about the wait!...

            S 1 Reply Last reply
            2
            • S SpookDog

              @HOTSHOT-III
              That’s a typo for the 503mm spring wear limit, it’s supposed to be 499mm. Hell of a wear limit otherwise!.
              I read somewhere that dtx springs are 515mm and progressive as standard. Probably the same as TZR springs if the info was right...

              Got a reply from fleabay: not in UK stock, 40-45 day order wait. Springs are 515mm x 3.9mm and are rated for 65-110kg weight riders...

              Sounds perfect, just have to trim the spring spacers by 12mm. Shame about the wait!...

              S Offline
              S Offline
              SpookDog
              wrote on last edited by SpookDog
              #17

              Cheers for the info guys, it all helps!...

              Ordered some springs, just in it for the long wait now 🙄

              If anyone has any fork bottoms, or whole forks, please let me know. I don’t have time to powder coat mine when I rebuild them...

              MadGyverM 1 Reply Last reply
              0
              • S SpookDog

                Cheers for the info guys, it all helps!...

                Ordered some springs, just in it for the long wait now 🙄

                If anyone has any fork bottoms, or whole forks, please let me know. I don’t have time to powder coat mine when I rebuild them...

                MadGyverM Online
                MadGyverM Online
                MadGyver
                wrote on last edited by
                #18

                @SpookDog
                DT200R springs are 548mm.Have them in mine with the air adjust cap's.

                I need my tools and a pile of junk.....

                S 1 Reply Last reply
                0
                • MadGyverM MadGyver

                  @SpookDog
                  DT200R springs are 548mm.Have them in mine with the air adjust cap's.

                  S Offline
                  S Offline
                  SpookDog
                  wrote on last edited by SpookDog
                  #19

                  @MadGyver

                  What bike do you have them fitted in?...

                  PS thank you for the info!...

                  MadGyverM 1 Reply Last reply
                  0
                  • S SpookDog

                    @MadGyver

                    What bike do you have them fitted in?...

                    PS thank you for the info!...

                    MadGyverM Online
                    MadGyverM Online
                    MadGyver
                    wrote on last edited by
                    #20

                    @SpookDog In my DT125.

                    I need my tools and a pile of junk.....

                    S 1 Reply Last reply
                    0
                    • MadGyverM MadGyver

                      @SpookDog In my DT125.

                      S Offline
                      S Offline
                      SpookDog
                      wrote on last edited by
                      #21

                      @MadGyver

                      Did you just delete the spacers completely? Any noticeable improvement? Also are the springs linear or progressive?...
                      Cheers bud!...

                      MadGyverM 1 Reply Last reply
                      0
                      • S SpookDog

                        @MadGyver

                        Did you just delete the spacers completely? Any noticeable improvement? Also are the springs linear or progressive?...
                        Cheers bud!...

                        MadGyverM Online
                        MadGyverM Online
                        MadGyver
                        wrote on last edited by
                        #22

                        @SpookDog said in Progressive fork springs?:

                        @MadGyver

                        Did you just delete the spacers completely? Any noticeable improvement? Also are the springs linear or progressive?...
                        Cheers bud!...

                        Didn't remove anything as memory serves.I had 2 forks,one DT125 and later one DT200,I had purchased every part to rebuild the 125 before having the 200.Compared everything and found to be the same except the springs.So I used the springs and the air adjust caps from the 200 forks.
                        They don't bottom easy as far I tested them and seem better for the SM style than the 125 springs,but soft to go trail ride.

                        I need my tools and a pile of junk.....

                        1 Reply Last reply
                        0
                        Reply
                        • Reply as topic
                        Log in to reply
                        • Oldest to Newest
                        • Newest to Oldest
                        • Most Votes


                        • Login

                        • Don't have an account? Register

                        • Login or register to search.
                        • First post
                          Last post
                        0
                        • Recent
                        • Tags
                        • Popular
                        • Users
                        • Groups