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  1. #1

    900 stx top speed 47Mph?

    Hello, I have 900 STX i just put a new stock impeller on and it is doing 47Mph @7050 RPM and hits 48Mph in a turn at @7100 RPM

    Is this the correct speed for this ski? I have seen post from 55 to 60mph?

    Will a skat track 15/20 improve top end much over stock?


  2. #2
    john zigler's Avatar
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    sounds about right.

    55-60 is way high. an 1100 STX will only do low 50's.
    a taller prop will not really do much, with out having more engine HP to pull it.

  3. #3

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    Quote Originally Posted by keenanj View Post
    Hello, I have 900 STX i just put a new stock impeller on and it is doing 47Mph @7050 RPM and hits 48Mph in a turn at @7100 RPM

    Is this the correct speed for this ski? I have seen post from 55 to 60mph?

    Will a skat track 15/20 improve top end much over stock?
    I agree with John. You will not see mid 50's without some $/mods. You will not see 60 with that motor. (At least fatty here wouldn't.)

  4. #4
    guys group k says 53MPM for the 900STX

    http://www.groupk.com/k900-1100.htm

    went out again yesterday and best GPS speed was 47.6MPH @ 7000RPM I guess its isnt bad for a 10 year old ski but still want that other 5MPH any ideas?

  5. #5
    I'd rather be jet skiing Saltwater n Premix's Avatar
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    Get an 1100.

  6. #6

  7. #7

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    get a 15f?

  8. #8
    I'd rather be jet skiing Saltwater n Premix's Avatar
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    Dude, you're gonna need a bigger motor to hit those speeds on this hull. Sorry, it's the truth. Not a whole lot you can do

  9. #9
    steve45's Avatar
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    My STX 1100 indicates 52 on the speedo. 47 sounds good for a 900.

  10. #10
    talked to david at impros today he sait the 900 stx should do 50mph with a solas 15/20 impeller

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