Stage 1: stock engine/filters, stock/modified pipes about a 5% power increaseIncreases power and drivabilityFully adjustable MaterialBrassProduct NameJet KitTypeStage 1UnitsKitVendor part numberQ425 MakeModelDisplacementYearCountryEngineYAMAHAYXR 660 FA 4X4 Rhino6602004AMERICAYAMAHAYXR 660 FA 4X4 Rhino6602005AMERICAYAMAHAYXR 660 FA 4X4 Rhino6602006AMERICAYAMAHAYXR 660 FA EX 4X4 Rhino Exploring Edition6602006AMERICAYAMAHAYXR 660 F 4X4 Rhino6602007AMERICAYAMAHAYXR 660 F EX 4X4 Rhino Exploring Edition6602007AMERICAYAMAHAYXR 660 FA SE 4X4 Rhino Special Edition6602006AMERICAYAMAHAYXR 660 F SE 4X4 Rhino Special Edition6602007AMERICAYAMAHAYXR 660 F SP 4X4 Rhino Sport Edition6602007AMERICAYAMAHAYXR 660 F DU 4X4 Rhino Ducks Unlimited Edition6602007AMERICAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYAMAHAYXR 660 FA 4X4 RhinoYXR 660 FA 4X4 RhinoYXR 660 FA 4X4 RhinoYXR 660 FA EX 4X4 Rhino Exploring EditionYXR 660 F 4X4 RhinoYXR 660 F EX 4X4 Rhino Exploring EditionYXR 660 FA SE 4X4 Rhino Special EditionYXR 660 F SE 4X4 Rhino Special EditionYXR 660 F SP 4X4 Rhino Sport EditionYXR 660 F DU 4X4 Rhino Ducks Unlimited Edition6606606606606606606606606606602004200520062006200720072006200720072007AMERICAAMERICAAMERICAAMERICAAMERICAAMERICAAMERICAAMERICAAMERICAAMERICA