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  1. #1

    Riva New Releases

    KAWASAKI Performance Products`08 Ultra 250X Stage I Kit
    ∑ RIVA Performance Power Filter Kit∑ RIVA Pro-Series Water Box∑ RIVA Free Flow Exhaust Kit∑ RIVA Top-Loader Intake Grate∑ RIVA Performance Ride Plate∑ RIVA Pro-Series Sponson Kit70mph @ 7,850rpm
    `08 Ultra 250X Free Flow Exhaust Kit
    Replaces the restrictive sound suppression system located between the water box and hull exit on your watercraft. Improves engine performance by reducing back pressure and harmful detonation. Easy installation with noticeable results. Supplied Billet Exhaust Outlet also sold separately (see below). Require RIVA Pro-Series Water Box (see below). IJSBA Limited & Superstock legal.

    Part#: RK16090-08
    Price: $ 249.95

    Ultra 250X Pro-Series Waterbox
    Our Pro-Series Water Box delivers increased horsepower and performance by reducing exhaust restriction and back pressure. Feature lightweight aluminum construction and precise fit.

    `08 Models: Direct replacement for original water box. Features larger outlet (2-1/4") compared to stock water box (1-3/4"). Must be used with RIVA Free Flow Exhaust Kit RK16090-08 (see above).
    `07 Models: Direct replacement for original water box. Use with RIVA Free Flow Exhaust Kit RK16090.

    Part#: RK16091
    Price: $ 289.95

    Ultra 250X/LX/STX-15F Billet Exhaust Outlet
    Our one-piece billet aluminum exhaust outlet directly replaces the OE exhaust outlet on all year model Ultra 250X's, Ultra LX's and STX-15F's. For `08 model Ultra's our exhaust outlet is larger than stock providing less restriction. Can be utilized with RIVA Free Flow Exhaust Kits RK16085 & RK16090. Anodized to prevent corrosion. Laser-etched graphics.

    Part#: RK16090-ET
    Price: $ 99.95

  2. #2
    2005 RXT Red08Ultra250's Avatar
    Join Date
    Feb 2008
    Dunedin, FL
    do we know how much lighter the water box is as compared to stock 08? Would this make it less "Left Heavy"?

  3. #3
    English Bob's Avatar
    Join Date
    Jun 2007
    Southern UK
    Skips.......whats the advantages of this setup instead of a straight through design.....i.e back pressure,and weight savings?????

  4. #4
    Site Admin Green Hulk's Avatar
    Join Date
    Apr 2005
    Morgan City, LA
    Guys, the Riva air intakes are available for immediate delivery


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