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  1. #1
    Hydrotoys's Avatar
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    HOW TO UPGRADE THE GP1200R WITH THE 2'' EXTENSION.

    Here is a parts list, with various pictures. You will need to extend your trim and throttle cables as well.

    http://www.hydrotoys.com/gpr/tuners/mark/pumpextention/






    60E-51317-00-94 HOUSING, IMPELLER2 ONE **Actual spacer.
    99590-14016-00 PIN, DOWEL TWO **Locates spacer to B-plate.
    90119-06859-00 BOLT, WITH WASHER ONE **Small bolt on left side.
    90119-10803-00 BOLT, WITH WASHER FOUR**Longer bolts that mount spacer plate AND wear ring to B-plate
    68N-51323-00-00 SHAFT, COUPLER ONE **This part is the intermediate shaft.
    F1G-61481-02-00 CABLE, STEERING ONE **This part is over $200!! You can make a cheap extention instead!
    68N-45593-00-94 FLANGE, COUPLING ONE **This is the coupler on the intermediate shaft.
    90201-248M5-00 WASHER,PLATE ONE **This is the washer behind coupler.


    Note: The year 2002 GP12R will NOT require intermmediate shaft, but will instead require the longer driveshaft.

    66V-45511-00-00 SHAFT, DRIVE ONE


    NOTE: All years of GP1200R will require some type minor grinding to original or aftermarket 1200 rideplate and pump housing.


  2. #2
    There is no VooDoo like BadVooDoo NeVerMind's Avatar
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    Extension

    I am thinking about doing this with a HO Pump on my GP1200R.

    Do you have any installation instructions (How does the coupler shaft go in)?
    Do you have any pics/diagrams/how-to's on how to extent the cables?

    Thanks!

  3. #3
    just GOT TO DO IT! great lakes gpr 1200's Avatar
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    What does this do fo the proformance?

  4. #4
    MR. SCOVILLE UNIT SUCKMYWAKE's Avatar
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    well, it's said to be about 1-2 mph. and then the 05 pump is about another 2 mph. go with the 05 pump and 2 inch spacer and u looking at 2-3 mph on top end and better hook-up

  5. #5
    ABBOTT's Avatar
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    Mark, will you touch base again on which GPR (Year model) that does not have the 2in extention already on it? I think RX talked about it in his thread about this as well.

  6. #6
    Hydrotoys's Avatar
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    2002 and down do not have the 2" extention.
    2002 has the correct intermediatte shaft, but a shorter driveshaft.

  7. #7
    ABBOTT's Avatar
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    awsome thanks!

  8. #8
    MR. SCOVILLE UNIT SUCKMYWAKE's Avatar
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    mark, do u remember the thread pitch for the adapters

  9. #9
    I think that the actual extension may slow you down. The gains are from the new pump vein housing.

  10. #10
    Hydrotoys's Avatar
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    Really?
    6 months ago, all I heard was that you HAD to have it to keep the ski hooked up.

    Kerry told me this directly over the phone.

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