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DT125R FORUM

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  4. What size sprockets

What size sprockets

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  • A Offline
    A Offline
    andrewj1680
    wrote on last edited by
    #1

    What size sprockets are people using? My dt i use mostly seems to stop pulling at 70mph but gets there fast abit too fast for my liking so thinking of changing sprockets i see a few of you suggesting yours do 80mph what size sprockets you running?

    1 Reply Last reply
    0
    • F Offline
      F Offline
      finnerz89
      wrote on last edited by
      #2

      Acceleration > top end in my opinion.
      I'm running 1 tooth smaller on the front. You have to get out of 1st sharpish, but it pulls nicely through all the gears.

      Current bikes:
      DT125X '07
      Street Triple R '11
      Aprilia ETV1000 '02

      Previous:
      DR650RSE '96
      FJ1200 '92

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      • A Offline
        A Offline
        andrewj1680
        wrote on last edited by
        #3

        I have 1 bike running 15 front and 57 teeth rear tops out at 70mph , another running 16 front 53 rear tops out at 68 another running 17 front 52 rear not sure what its topping out as the speedo isnt working and another 50 rear and 13 up front but no speedo at all lol

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        • F Offline
          F Offline
          finnerz89
          wrote on last edited by
          #4

          Looks like you have more experience than most with different ratios lol.

          Current bikes:
          DT125X '07
          Street Triple R '11
          Aprilia ETV1000 '02

          Previous:
          DR650RSE '96
          FJ1200 '92

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          0
          • terry.tzT Offline
            terry.tzT Offline
            terry.tz
            wrote on last edited by
            #5

            16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

            • if the winds behind you or its down hit

            "Muddy water is best cleared by leaving it alone" Alan Watts

            terry.tzT A 2 Replies Last reply
            0
            • terry.tzT terry.tz

              16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

              • if the winds behind you or its down hit
              terry.tzT Offline
              terry.tzT Offline
              terry.tz
              wrote on last edited by
              #6

              standard pipe no mods and sh!t compression i think

              "Muddy water is best cleared by leaving it alone" Alan Watts

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              • terry.tzT terry.tz

                16/57 gets to 70 like wiz head on the run dont take much more than a few seconds to get 80

                • if the winds behind you or its down hit
                A Offline
                A Offline
                andrewj1680
                wrote on last edited by
                #7

                @terry-tz think I'll try that 1 combo closest to that i have is 15/57 but it is fast til 70 but wont go even a mph over weather down hill or up hill it doesnt matter, the engine has a tuned cylinder and modded head so even in top gear it pulls like a train but once it hits that 70 thats it

                terry.tzT 1 Reply Last reply
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                • A andrewj1680

                  @terry-tz think I'll try that 1 combo closest to that i have is 15/57 but it is fast til 70 but wont go even a mph over weather down hill or up hill it doesnt matter, the engine has a tuned cylinder and modded head so even in top gear it pulls like a train but once it hits that 70 thats it

                  terry.tzT Offline
                  terry.tzT Offline
                  terry.tz
                  wrote on last edited by
                  #8

                  @andrewj1680 tbh I'm 80 mph every where I go but with knobbly tyres it feels f!cked up when you're leaning nothing but curvy roads around

                  "Muddy water is best cleared by leaving it alone" Alan Watts

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                  • DartyD Offline
                    DartyD Offline
                    Darty
                    wrote on last edited by
                    #9

                    I can push 90 now 😆

                    Keep it real

                    terry.tzT 1 Reply Last reply
                    0
                    • DartyD Darty

                      I can push 90 now 😆

                      terry.tzT Offline
                      terry.tzT Offline
                      terry.tz
                      wrote on last edited by
                      #10

                      @darty sprockets

                      "Muddy water is best cleared by leaving it alone" Alan Watts

                      1 Reply Last reply
                      0
                      • DartyD Offline
                        DartyD Offline
                        Darty
                        wrote on last edited by
                        #11

                        13/55T on 520 pitch.

                        But having tuned it, it still pulls hard at 12k

                        Keep it real

                        terry.tzT 1 Reply Last reply
                        0
                        • DartyD Darty

                          13/55T on 520 pitch.

                          But having tuned it, it still pulls hard at 12k

                          terry.tzT Offline
                          terry.tzT Offline
                          terry.tz
                          wrote on last edited by
                          #12

                          @darty you have a 200 in yours to don't you

                          "Muddy water is best cleared by leaving it alone" Alan Watts

                          DartyD 1 Reply Last reply
                          0
                          • terry.tzT terry.tz

                            @darty you have a 200 in yours to don't you

                            DartyD Offline
                            DartyD Offline
                            Darty
                            wrote on last edited by
                            #13

                            @terry-tz I wish, I run a 134cc with racing head work.

                            Keep it real

                            terry.tzT 1 Reply Last reply
                            0
                            • A Offline
                              A Offline
                              andrewj1680
                              wrote on last edited by
                              #14

                              I have a rebuilt wr200 going into mine that did 104mph before it was rebuilt and mick abbey tuning cylinder and modded head, I'm having frame painted monday/tuesday i had the wr200 fork clamps bored to take the dt head stem and all the alloy rear swingarm and shock has been stripped right back and polished, not sure if I'm gonna run a wr200 loom and cdi or dt loom with zeeltronic

                              1 Reply Last reply
                              0
                              • CalumC Offline
                                CalumC Offline
                                Calum
                                wrote on last edited by
                                #15

                                @finnerz89 IF you have a bigger bike, then I totally agree. But for me the bike was my sole transport and I needed to do dual carrigeway speeds, so I was able to rag it to 80, but sit at 70 comfortably.

                                Always Originate, Never Pirate!

                                1 Reply Last reply
                                1
                                • DartyD Darty

                                  @terry-tz I wish, I run a 134cc with racing head work.

                                  terry.tzT Offline
                                  terry.tzT Offline
                                  terry.tz
                                  wrote on last edited by
                                  #16

                                  @darty my bad
                                  @Calum I need to do some carriageway but can't imagine it being a comfortable bike for it il soon find out I guess

                                  "Muddy water is best cleared by leaving it alone" Alan Watts

                                  CalumC 1 Reply Last reply
                                  1
                                  • J Offline
                                    J Offline
                                    Jens Eskildsen
                                    wrote on last edited by
                                    #17

                                    14-48 in 520, seems good for most things.

                                    1 Reply Last reply
                                    0
                                    • terry.tzT terry.tz

                                      @darty my bad
                                      @Calum I need to do some carriageway but can't imagine it being a comfortable bike for it il soon find out I guess

                                      CalumC Offline
                                      CalumC Offline
                                      Calum
                                      wrote on last edited by
                                      #18

                                      @terry-tz Nope. Horrible. just feels like you're going to seize the engine lol.

                                      Always Originate, Never Pirate!

                                      declanD 1 Reply Last reply
                                      0
                                      • CalumC Calum

                                        @terry-tz Nope. Horrible. just feels like you're going to seize the engine lol.

                                        declanD Offline
                                        declanD Offline
                                        declan
                                        wrote on last edited by
                                        #19

                                        @calum I haven't been able to top mine out anywhere how do you lads find the space? 😂😂😂

                                        A terry.tzT 2 Replies Last reply
                                        0
                                        • declanD declan

                                          @calum I haven't been able to top mine out anywhere how do you lads find the space? 😂😂😂

                                          A Offline
                                          A Offline
                                          andrewj1680
                                          wrote on last edited by
                                          #20

                                          @declan not alot of space needed bud they get there nice and fast

                                          CalumC 1 Reply Last reply
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