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  1. #1

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    stock speeds on GTX

    so the wife's Ski. 2013 GTX S 155

    Top speed ~50
    at 7000 RPM

    does that sound right for that ski?


  2. #2

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    flat water? my stock 02 gtx 155 will almost hit 60 on flat calm water.

  3. #3

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    yea, flat water. seems much slower then others are posting. ski only has 30 hours and a fresh service.

  4. #4

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    My 2013 GTX (21 hrs) does around 55 I believe

  5. +1 by:


  6. #5

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    Quote Originally Posted by jjjj View Post
    My 2013 GTX (21 hrs) does around 55 I believe
    Can you look at your RPM and let me know where your at?

    Even a rented Spark was faster this 49-50 we are getting out of that GTX s 155.

  7. #6
    Check your oil level should be half way other wise will lose Rpms and speed

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  9. #7
    With stock prop should be around 7450

  10. #8
    The heat and humidity kills speed and rpm I'm down from 7450 to 7000-7150 in 90% humidity and 95-100 degree heat running 54 mph with a 02 gtx

  11. #9
    RGUN's Avatar
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    Aug 2013
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    Work: GTA ------------ ----------------- Play: Georgian Bay
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    Quote Originally Posted by Sabby View Post
    so the wife's Ski. 2013 GTX S 155

    Top speed ~50
    at 7000 RPM

    does that sound right for that ski?
    Have the identical ski chasing the same issue. We're topping out at 7000rpm as well in low temp and humidity. After checking the oil the dealer overfilled it by nearly a full quart. We have yet to ride it since we drained the oil out.

  12. #10
    RGUN's Avatar
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    Aug 2013
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    Test ridden with proper oil level. Our 2013 GTX 155 S ~50 hours still tops out at 50mph, 7000rpm.

    Anyone have any suggestions if this is in fact slow. I seem to recall 55being possible last year.

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