2005 Sea-Doo GTX SC


Why keep up with the Joneses when you can leave them in your wake? With the 2005 GTX SC, your family will travel in fine style. Its all-powerful 185HP Rotax engine makes it just the watercraft for those who like to define quality time for the family on their own terms.


  • Supercharged 1494cc four-stroke, three-cylinder Rotax SOHC: Reliable high performance in fresh or salt water, increased torque at low RPM, optimizes power at all RPM levels and throttle positions.
  • Multi-port fuel injection: Better control of exhaust emission and power at all RPM range to reduce emissions and reduce fuel consumption.
  • Sea-Doo® Learning Key™: Limits engine RPM & top speed for less experienced riders.
  • Chokeless starting: Simple, user-friendly starting.
  • Water cooled exhaust pipe: Regulates exhaust temperature.
  • Closed-loop cooling system: Insures the proper operating temperature at all speeDual Sport and improves corrosion durability.
  • Watertight digital ignition: Provides optimal energy for a consistent spark, ensuring maximum performance.
  • RPM limiter: Protects engine from over-revving.
  • Warning device: Warns operator of engine and exhaust overheating, engine management and system failure.
  • Handlebar-mounted start / stop button Single user-friendly engine starts and stops with one control button.
  • Tips Over Protection System (T.O.P.S.™): Protects engine in case of turn over.

Hull and Components

  • Modified-V design: Ensures a smooth and comfortable ride in a variety of water conditions, and greater maneuverability.
  • Fiberglass-reinforced: Strong, light and easy to maintain.
  • Sponsons: For improved handling.
  • D-Sea-BeI™ system: Sound reduction system for a quieter ride.
  • Bumpers: Help protect watercraft from damage while tied to a dock or another craft.
  • Bow and stern eyes: Designed for towing or securing the craft to a trailer or dock.
  • Temporary docking loops: Provides access for quick tie-up.
  • Carpeted footwells and deck paDual Sport: Offer extra comfort and non-skid surface.
  • Reboarding platform: For easy and comfortable mounting of the craft in deep water.
  • Two-tone comfort hand grips: Provides great looks and extreme hand comfort.
  • Floating safety lanyard: Stops engine in manual and emergency situations.
  • Seat strap: AiDual Sport in reboarding from water.
  • Grab handle: For easy reboarding and as a passenger handhold.
  • Built-in reboarding step: Grooved fold-down for easy reboarding.
  • Water / air separator: Provides maximum airflow to engine and reduces water intrusion.
  • 3-up seat: Comfortable room for three - permits spotter for watersports.
  • Watertight storage compartment: Provides storage for fire extinguisher and necessities with easy access.
  • Extra-large storage compartment(s): Abundant room for supplies on extended cruises.
  • Glove compartment: Great place to store smaller items.
  • Ski eye: Improved for easy and secure attachment of ski rope.
  • Extended range fuel tank (15 US gal): Provides maximum cruising and exploring range.
  • Elevated fuel filler: Easy access and prevents water intrusion while refueling.
  • Multifunction LCD Information Center: Reports 16 key operating functions: Fuel Level, Low Fuel Level, Low Oil Pressure, Low Voltage, Tachometer, Overheat, Ambient Temperature, Distance, Hour Meter, Maintenance Info, Average Speed, Current Speed, Compass, Check Engine, Lake Temperature, Chronometer.
  • Analog speedometer and tachometer: Informs operator of watercraft speed and RPM.
  • Dual drain plugs: Screw type design with built-in retainer for easy removal and installation.
  • Digitally Encoded Security System (D.E.S.S.™): Industry's first digitally encoded theft-deterrent system.
  • External exhaust cooling flush attachment: Easily accessible and fits a common garden hose.
  • Adjustable mirrors: Increases field of view.
  • Foam flotation: Ride with security and peace of mind. Meets or exceeDual Sport USCG standarDual Sport.
  • Operator's guide, Instructional video and safety booklet: Informs you of boating regulations, care, maintenance and operating features.
  • Off-Power Assisted Steering (O.P.A.S™): Assists steering during off-power, as well as off-throttle situations.

Propulsion System

  • Bombardier Formula water jet pump: Delivers matched performance with the Rotax 4-TEC engine.
  • Forward / neutral / reverse: Safe operation while docking, trailering or towing.
  • Composite stator vanes: Handles the high-performance engine without erosion
  • Replaceable urethane wear ring: Provides long impeller life, less maintenance and maximum thrust.
  • Dual automatic vacuum siphon pumps: Continuously remove water entering the engine compartment.
  • Large diameter drive shaft with crowned spline design: Maintains engine and pump alignment at all operating speeDual Sport.
  • Stainless steel 4-blade impeller: Delivers improved acceleration, higher top speed and less cavitation.


  • Speedometer (Analog)
  • Tachometer (Analog)
  • Fuel gauge (Info Center)
  • Information Center (16 functions)
  • D.E.S.S.™
  • O.P.A.S.™ system
  • Sea•Doo® Learning Key™
  • Mirrors
  • Reboarding step
  • Two-tone comfort hand grips
  • Removable front storage tray

General Information

Manufacturer Sea-Doo
Model Year 2005
Model GTX SC
Model Code 165A
Stock Number B7D505
Color Twilight Blue Pearl


Hull Material Fiberglass
Hull Type Modified Vee
Storage 52.6 gal.


Length 130.9 in.
Height 44.4 in.
Width 48.2 in.
Weight 867 lbs.


Transmission Direct drive, forward/neutral/reverse
Propulsion System Bombardier Formula water jet pump
Impeller Stainless steel, 4-blade
Pump Aluminum, axial flow, single stage, large hub with 10-vane stator


Battery 12 volt


Engine Supercharged four-stroke, three-cylinder Rotax® SOHC, Closed-loop cooling system
Horsepower 185 hp
Displacement 1494 cc
Bore x Stroke 100 mm x 63.4 mm
Compression Ratio 8.5:1
Carburetion Multi-port fuel injection
Ignition Digital inductive
Starter Electric
Lubrication Dry sump, pressure oil system
Oil Capacity 1.6 gal.


Seating 1, 2 or 3 riders


Additional Colors Twilight Blue