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DT125R FORUM

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  3. Dt 125r 1997 tuning need help

Dt 125r 1997 tuning need help

Scheduled Pinned Locked Moved Tuning
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  • O OneWheelUpUK

    New here but ive just baught a 1997 yamaha dt and cant find much about them online.

    Already got full exhaust just wondering whats best to get for it. Im looking for alot of bottom end so i can get the front wheel up easily but not too much that i risk losing all the top end.

    Also if anyone could point me in the direction of where to get parts for it would be appreciated.

    declanD Offline
    declanD Offline
    declan
    wrote on last edited by
    #3

    @onewheelupuk try a smaller front sprocket my bike clutches up in 2nd and I’m new to it at at about 6k pull the clutch in rev limiter and pull should come up no problem make sure your pv isn’t pinned otherwise that will kill your torque there’s years and years of info on the forum so you shouldn’t be short on information

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    • O Offline
      O Offline
      OneWheelUpUK
      wrote on last edited by
      #4

      Cheers guys any recommendations for parts? I need new air filter the hose from the original is broke

      declanD 1 Reply Last reply
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      • O OneWheelUpUK

        Cheers guys any recommendations for parts? I need new air filter the hose from the original is broke

        declanD Offline
        declanD Offline
        declan
        wrote on last edited by
        #5

        @onewheelupuk the carb boot? I believe there’s Some on eBay

        CalumC 1 Reply Last reply
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        • declanD declan

          @onewheelupuk the carb boot? I believe there’s Some on eBay

          CalumC Offline
          CalumC Offline
          Calum
          wrote on last edited by
          #6

          @declan Or can be had new from Yamaha

          Always Originate, Never Pirate!

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          • D Offline
            D Offline
            DtrDaz03
            wrote on last edited by
            #7

            Well Iv got a 2003 dtr 125 and it does 85 mph even though it’s only got 80 on clock lol it’s never been rebored just standard size Athena racing piston in, full dep pipe, drilled air box and carb upjetted runs really well through all the gears acceleration is very responsive and sounds like a crosser due to airbox drilled best dtr Iv been on and had over the years. Where you from ????

            CalumC 1 Reply Last reply
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            • D DtrDaz03

              Well Iv got a 2003 dtr 125 and it does 85 mph even though it’s only got 80 on clock lol it’s never been rebored just standard size Athena racing piston in, full dep pipe, drilled air box and carb upjetted runs really well through all the gears acceleration is very responsive and sounds like a crosser due to airbox drilled best dtr Iv been on and had over the years. Where you from ????

              CalumC Offline
              CalumC Offline
              Calum
              wrote on last edited by
              #8

              @2003dtrdaz It's funny you say that cause the 2001-2004 DTR's were the worst. Absolute nightmare to derestrict, pretty sure you need to swap the CDIs out they're that bad.

              Sounds like yours has been tuned slightly, but bone stock they're poo. Obviously same engine as all the others so it's nothing permanent.

              Always Originate, Never Pirate!

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              • D Offline
                D Offline
                DtrDaz03
                wrote on last edited by
                #9

                In my eyes the older dtr are the best ones to get upto 2003 as they stopped making them in 03 after then they are all wank mate thts my opinion anyway who needs electric start old school better than new any day, by the way my bike standard as they come cdi etc lol

                CalumC antndanikaA 2 Replies Last reply
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                • D Offline
                  D Offline
                  DtrDaz03
                  wrote on last edited by
                  #10

                  Mines also fully deresticted if you know how it’s easy lol

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                  • D DtrDaz03

                    In my eyes the older dtr are the best ones to get upto 2003 as they stopped making them in 03 after then they are all wank mate thts my opinion anyway who needs electric start old school better than new any day, by the way my bike standard as they come cdi etc lol

                    CalumC Offline
                    CalumC Offline
                    Calum
                    wrote on last edited by
                    #11

                    @dtrdaz03 The RE's are by far the easiest to derestrict. It's the fact that up to 1999, the last DTR's were severely restricted, and not even derestricting them fixed that. You had to swap out the CDIs. The RE's was just earth the green and black wire plus an aftermarket pipe and that was it. Again you're limited to the capabilities built into the CDI. Once you swap out the CDI for an aftermarket one then you are golden no matter what year your bike was.

                    Always Originate, Never Pirate!

                    Louis-DT-WRL 1 Reply Last reply
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                    • D DtrDaz03

                      In my eyes the older dtr are the best ones to get upto 2003 as they stopped making them in 03 after then they are all wank mate thts my opinion anyway who needs electric start old school better than new any day, by the way my bike standard as they come cdi etc lol

                      antndanikaA Offline
                      antndanikaA Offline
                      antndanika
                      wrote on last edited by
                      #12

                      @dtrdaz03
                      I have just got a 1995 dtr really nice bikes looking to tune it up now

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                      • CalumC Calum

                        @dtrdaz03 The RE's are by far the easiest to derestrict. It's the fact that up to 1999, the last DTR's were severely restricted, and not even derestricting them fixed that. You had to swap out the CDIs. The RE's was just earth the green and black wire plus an aftermarket pipe and that was it. Again you're limited to the capabilities built into the CDI. Once you swap out the CDI for an aftermarket one then you are golden no matter what year your bike was.

                        Louis-DT-WRL Offline
                        Louis-DT-WRL Offline
                        Louis-DT-WR
                        wrote on last edited by
                        #13

                        the 2003 was easy to derestrict the standard 3rm-20 cdi I actually found very good. Restrictions were the standard exhaust and the reed switch in the back of the speedometer. They came with the powervalve from factory unlike some other years which I can't believe they did fit servos! Back when mine was 125cc it would destroy an 1990 DTR

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