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Thread: ATC70 rear sprocket options

  1. #1
    theeechozen1 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    ATC70 rear sprocket options

    I have a 85 125M motor in my 70.. i want to put a 428 sprocket on the back so everything matches up. What can I use?

    Will an older CT sprocket bolt up?

    It does work with the 420 rear but after some chain stretch i get some chain jumping.. since i need to swap them out now anyways I wanted to go 428 all around



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  2. #2
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    I'm not sure if they make a 428 sprocket for a atc70. You might have to get one made or make one
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  3. #3
    KASEY's Avatar
    KASEY is offline weee weeee weeeeeeeeeee ! ! ! The day begins with 3WW
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    Honda used those sprockets on many small motorcycles too,,, maybe if you get a Honda parts guy to help you out ,, you can cross one over

  4. #4
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    I'm trying to remember. I think one of the Honda CT90 or 110 rear sprockets have the same setup as the 70. I think they have 42 teeth and are definitely 428.

  5. #5
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    Take some measurements . here's a good link .
    http://www.ebay.com/itm/REAR-sprocke...5f443b&vxp=mtr
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