Sea Doo RIVA S3 RXT-X RXT-iS/aS GTX-iS/aS Performance Water Box w/ Tube/Tip Kit RS16091/ RS16091-ET-100/ RS15090-ET

RS16091/ RS16091-ET-100/ RS15090-ET
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Sea Doo S3 RIVA Performance Water Box Kit

Kit Includes:

1 - RIVA S3 Performance Water Box

1 - RIVA S3 Water Box Exhaust Hose

1 - RIVA Exhaust Tip Kit


100% Genuine RIVA

Our Pro-Series Sea-Doo Water Boxes deliver increased horsepower and performance by reducing exhaust restriction and back pressure. Developed on a flow bench, our water boxes feature radiused exhaust tubes and end caps for optimum exhaust flow. Innovative short design allows easy servicing of supercharger without removal of exhaust system. High strength aluminum construction & precision welds will survive backfires & overheating. Powder coated to prevent corrosion. Includes detailed installation instructions.


  • 2009 & Newer Sea-Doo RXT/GTX iControl (S3) Models (suspended & fixed deck)

NOTE: Water Box not designed or intended to be used with stock rubber exhaust hose and/or stock exhaust outlet.

Exhaust Tube:

Mandrel bent aluminum exhaust tube with bead rolled ends couples our Pro-Series Water Box (part# RS16091) with our Billet Rear Exhaust Outlet (part# RS15090-ET). Powder coated to prevent corrosion.

For use in 2009 & Newer Sea-Doo RXT/GTX (S3) iControl Models. 

Exhaust Outlet Kit:

Constructed from billet aluminum with laser etched graphics and anodized to prevent corrosion. Includes template for installation to line up with RIVA Aluminum Exhaust Tubes when using RIVA Pro-Series Water Box (part# RS16091) in RXT/GTX (S3) and RXP-X (T3) iControl Models.