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  1. #1

    ultra 250x offshore mods

    hi i have recently bought an ultra 250x with the view to racing it in this years aqua x series. i raced last year on a rxp 215 and discovered it really was not the ski for racing on the sea!!!

    are there any mods i can do the ultra to make it even better in choppy conditions? any recomendations on ride plate and intake grate combinations? i cant do anything to the power of the ski so its all about getting it running good through the chop.

    any help would be great. thanks

  2. #2
    GZA's Avatar
    Join Date
    Sep 2010
    New Zealand
    Hey Tomrice, there's a huge database logged here in the 6480 threads in this forum alone. You'll be able to find the info you're after with a quick search.

  3. #3
    benjahw benjahw's Avatar
    Join Date
    Jan 2008
    Naples, Fl
    double bearing upgrade, change oil every 10 - 15 hrs, intercooler re-route mod, washers under seat, keep oil level slightly low, clean and check intercooler...

    This will be a better ski if you just focus on reliability and allowing more air into engine compartment.. There are modifications for supercharger but its going to ruin your life.

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  5. #4
    Fat Man, Little Boat Region8Ultra250X's Avatar
    Join Date
    Jun 2007
    Update the pump to the double bearing setup, intake grate, ride plate, sponsons, steering, a seat cover and an air intake if you desire. that will keep you stock class legal in the 250 class.

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