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  1. #1

    Difference beween GP1200AA and R?

    First let me say thanks to anyone that can help me with this question. I've tried the search option, but can't find an answer. I have a 2002 GP1200 and was told it was the "R" model. While doing engine work on it I see the model listed as GP1200A-A on a metal tag. Is there a difference between the two? The cylinders are stamped 66V. Now here's the weird part....The middle piston is marked 66V and the front one is marked 66E. From what I've read the 66E is for the 800cc. I'm wondering what is going on here? Thanks again.


  2. #2
    Nobody? I have the engine half apart and just want to make sure I order the right parts!

  3. #3
    L Carlson's Avatar
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    66v is what it is in America should be the same post more info.

  4. #4

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    Someone has replaced that cylinder, they should all read 66v. It is from an 800, I believe there is a difference in the two but im not sure exactly what.

  5. #5
    That's what I'm thinking. Unless these parts are interchangeable from the factory. Thanks for the help.

  6. #6
    krispaintballz's Avatar
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    port timing is different.

  7. #7
    Moderator OsideBill's Avatar
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    Quote Originally Posted by krispaintballz View Post
    port timing is different.
    Ditto on this, you want all 66V for a 1200R or 66E's if you are running a 1200R triple piper.

    1200aa vs 1200R are probably the same the microfiche is strange just look up the proper year, they only made 1200R's in 00-02 and then the same motor is in the XLT/XLL 99-04

  8. #8
    You guys are awesome. Thanks for sharing your knowledge.

  9. #9

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    Quote Originally Posted by OsideBill View Post
    Ditto on this, you want all 66V for a 1200R or 66E's if you are running a 1200R triple piper.

    1200aa vs 1200R are probably the same the microfiche is strange just look up the proper year, they only made 1200R's in 00-02 and then the same motor is in the XLT/XLL 99-04
    for some reason when you look at the microfiche on any of the gprs it doesn't say r. i think they added the aa and other abbreviation so there was a distinction from year to year changes.

  10. #10
    I've noticed that also. And depending on what site you're on to order parts, it's listed differently also. But either way, I'm going to replace the 66E piston with a 66V along with another unmarked (assuming aftermarket piston) so they're all evenly balanced.

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