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DT125R FORUM

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What piston?

Scheduled Pinned Locked Moved Engine
17 Posts 6 Posters 1.2k Views 1 Watching
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  • S SpookDog

    Cheers guys, feedback is good...
    I think Mitaka are made in Taiwan as well as Japan? With the later being the choice...
    Anyone had dealings with or heard about Namura? They claim a hard anodised crown and a molybdenum/Teflon coated skirt...
    They seem cheap for the specs which always raises a red flag for me. Don’t about the country of origin?...

    M Offline
    M Offline
    mikey118
    wrote on last edited by
    #8

    @SpookDog Taiwanese manufacturing often as good as found in Japan - in my experience. There is little evidence to support hard anodising of piston crowns when the piston is manufactured well in the 1st place. PVD coatings can be great, but unless designed in, and included in your bore finish & clearance allowances, a waste of time/money. It's very, very often just a sales gimmick as properly useful PVD coating is not cheap...

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    • CalumC Offline
      CalumC Offline
      Calum
      wrote on last edited by
      #9

      Don't knock Taiwanese. They're a skilled labour force. I've got many Taiwanese products and the quality of them is second to none!

      Always Originate, Never Pirate!

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      • S Offline
        S Offline
        SpookDog
        wrote on last edited by
        #10

        Wow! Hold yo horses! I’m only going on what I’ve heard. Like I said, I’m in the dark here. I know nothing about Taiwanese manufacturing. I only know Japanese and German are usually best...
        Hence, I’m very interested in all opinions...
        Please keep them coming. I need other people’s opinions to help me through this mine field...

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        • S Offline
          S Offline
          SpookDog
          wrote on last edited by
          #11

          Basically, what replacement piston are you running, that you don’t regret?...

          M 1 Reply Last reply
          0
          • S SpookDog

            Basically, what replacement piston are you running, that you don’t regret?...

            M Offline
            M Offline
            mikey118
            wrote on last edited by
            #12

            @SpookDog
            I've only used Mitaka in a few 250 engines & they have been fine, a good compromise between cost & quality. However I use Vertex whenever possible and they are the best I've found, whether for MX or circuit use.

            declanD 1 Reply Last reply
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            • M mikey118

              @SpookDog
              I've only used Mitaka in a few 250 engines & they have been fine, a good compromise between cost & quality. However I use Vertex whenever possible and they are the best I've found, whether for MX or circuit use.

              declanD Offline
              declanD Offline
              declan
              wrote on last edited by
              #13

              I use mitaka they’re good pistons and a lot of them are surplus oem jap pistons according to them atleast

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              • S Offline
                S Offline
                SpookDog
                wrote on last edited by
                #14

                So Vertex or Mitaka seem the pistons of choice? (it was the PJME website that I saw the ‘cheaper made’ Taiwan Mitaka piston comment, by the by) I’m guessing I’m gonna go for the Vertex, if I can get it at the right price. Just for the guaranteed quality of nothing else.
                I don’t see any point in a forged piston if I don’t have any other tuning, or the knowledge to make use of its potential. It’d just be ‘lipstick on a pig’ 😜
                Cheers for yous opinions buds!...

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                • DartyD Offline
                  DartyD Offline
                  Darty
                  wrote on last edited by
                  #15

                  Someone suggested to me a Makita Racing piston a long time ago.

                  Keep it real

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                  • N Offline
                    N Offline
                    no smoke no poke
                    wrote on last edited by
                    #16

                    athena r quality parts u wont go wrong with these

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                    • N Offline
                      N Offline
                      no smoke no poke
                      wrote on last edited by
                      #17

                      Yamaha TZR125 DTR TDR 125 Wiseco Piston Stock 56mm Bore 679M05600
                      on ebay aint bad at all either they range .5mm and have 8 stages u have to have a rehone though to be sure u aint blowing your funds

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