Sun Coast Cycle Sports carries used OEM parts for the Sea-Doo GTX, the luxury touring flagship of BRP's personal watercraft lineup. The GTX has been in production since the mid-1990s, evolving through multiple hull platforms and Rotax engine generations. Current and recent GTX models use the Rotax 1630 ACE inline-three in naturally aspirated (170 hp), supercharged (230 hp), and high-output supercharged (300-325 hp) configurations. The GTX prioritizes comfort, stability, and features for longer rides, with the widest hull, most storage capacity, and premium amenities including Bluetooth audio and touchscreen displays on recent models. GTX Limited variants add the highest-specification equipment available in the Sea-Doo range. All parts are inspected, photographed, and ship from our Odessa, Florida warehouse.
Sea-Doo GTX generation and parts compatibility
| Era | Years (approx) | Engine | Key notes |
|---|
| GTX 4-TEC | 2002-2005 | Rotax 1494cc (1503) inline-3 | First 4-stroke GTX. NA and supercharged versions. Ceramic supercharger clutch washers (replace with metal) |
| GTX (iS/iTC era) | 2006-2012 | Rotax 1494cc inline-3, 155-260 hp | Intelligent suspension, iBR (brake/reverse) from 2009+ |
| GTX (current platform) | 2013+ | Rotax 1630cc ACE inline-3, 170-325 hp | ST3 hull platform, iControl, touchscreen (2024+), ABS option |
The GTX shares its Rotax engine platform with other Sea-Doo models of the same displacement and power output. A GTX 300 and RXT-X 300 of the same model year use the identical supercharged Rotax 1630 engine. Engine internals, supercharger, jet pump, and drivetrain components interchange between Sea-Doo models within the same engine specification. The GTX's hull, deck, seat, storage compartments, and touring-specific accessories are unique to the GTX line and do not fit other Sea-Doo models.
Within the GTX family, the GTX base, GTX Limited, and GTX 230/300/325 variants share the same hull platform. The differences between variants are engine power output, accessory level (audio, GPS, trim), and finish. Most hull and body components interchange between GTX variants of the same generation.
Common Sea-Doo GTX failure points and replacement parts
Supercharger maintenance (supercharged models): Supercharged GTX engines require periodic supercharger inspection and rebuild, typically every 100-200 hours. The supercharger clutch washers on 2004-2007 models used ceramic material that could fragment and damage the engine. Metal replacement washers are essential on these early models. Post-2008 models addressed this with metal washers from the factory.
Carbon seal / wear ring: The carbon ring seal at the impeller shaft is a wear item that requires periodic inspection and replacement. A worn carbon seal allows water intrusion into the hull. The wear ring around the impeller also degrades over time, reducing jet pump efficiency and acceleration.
Corrosion (saltwater use): GTX models used in saltwater require thorough flushing of the cooling system and exhaust after every use. Neglected flushing causes internal corrosion that can lead to expensive cooling system and exhaust repairs.
DESS key system: The Digitally Encoded Security System can occasionally develop communication issues between the key fob and the craft. Corroded or damaged DESS post contacts are the most common cause and are relatively simple to clean or replace.
Commonly replaced Sea-Doo GTX parts
- Supercharger rebuild kits and clutch washers
- Carbon seal and wear ring
- Impeller and jet pump components
- Hull and deck panels
- Seat and upholstery
- Spark plugs and ignition coils
- Exhaust system and muffler
- Intake grate and ride plate
- DESS key post and lanyard
- Storage compartment seals and latches
Frequently asked questions
Q: Does the GTX share engine parts with the RXT or RXP
Yes. The GTX, RXT, RXP, and GTR all share Rotax engines within the same displacement and power specification. A GTX 300 and RXT-X 300 of the same year use the identical engine. Engine internals, supercharger components, and jet pump assemblies interchange. Hull and body components are model-specific.
Q: What is the difference between the GTX and GTX Limited
The GTX Limited is the top-specification variant with maximum accessories: premium audio system, largest touchscreen display, hydraulic steering damper, and highest-quality seat and trim. The hull and engine are shared with the standard GTX of the same power rating. Limited-specific components are the audio system, display, and premium trim pieces.
Q: Are GTX parts compatible with Sea-Doo Spark models
No. The Spark uses a completely different Rotax 900 ACE engine (899cc) in a smaller Polytec hull. No engine, hull, or mechanical components interchange between the GTX and Spark platforms.
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