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  1. #1
    rx4pain's Avatar
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    Rotax Racing Supercharger Impeller & Spacer for X model

    Anyone heard talk of this new wheel? It's sells for $760 in the Online store and has the following boost stats:

    stock X model boost pressures
    9.8 psi @8100
    11.2 psi @8500
    11.6 psi @8700

    Rotax Racing impeller and spacer for X models
    11.2 psi @8100
    12.3 psi @8500
    13.0 psi @8700



  2. #2

  3. #3
    rx4pain's Avatar
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    Thanks for the help in posting that link...maybe it was the title of that thread that had me messed up and passed over it. So do you or anyone know if the posted numbers for this RR impeller mod is with stock X parts or was a different intercooler used?

  4. #4

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    I think both- as most of us that get to the higher rpms have to use different intercooler and the lower rpms don't- could be wrong though.

  5. #5
    Site Admin Green Hulk's Avatar
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    I'm sure the advertised boost figures were with the stock intercooler. The X models already have a very good external intercooler.

  6. #6
    rx4pain's Avatar
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    Man this is making it tough already and I don't even have the X yet. 2 weeks out now! I wonder what Riva's Stage II will have...hmm.

  7. #7
    ROTAX RACING performance
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    you can see in the dyno chart , it says 1503/350 HP, that is the ROTAX RACING engine incl. a ROTAX RACING IC, so with the orginal X IC or RIVA your boost # could be a little bit higher. maybe 0.2 psi

  8. #8
    Quote Originally Posted by rx4pain View Post
    Anyone heard talk of this new wheel? It's sells for $760 in the Online store and has the following boost stats:

    stock X model boost pressures
    9.8 psi @8100
    11.2 psi @8500
    11.6 psi @8700

    Rotax Racing impeller and spacer for X models
    11.2 psi @8100
    12.3 psi @8500
    13.0 psi @8700

    Would these components work with the oem SC shaft/housing?

  9. #9
    Site Admin Green Hulk's Avatar
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    Quote Originally Posted by VaRedneck View Post
    Would these components work with the oem SC shaft/housing?
    They do work with the OEM X model shaft/housing.

    Not with the 215 HP shaft housing.

    X models have a larger diameter impeller and will not fit in a 215 housing.

  10. #10
    Could you swap the complete '05 sc for the x's?

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