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The 2010-2019 Sea-Doo GTX 155 was the less-featured sibling of the supercharged GTX iS 215 and the GTX Limited iS 260. The entire GTX series shared the same hull and top deck, but the GTX 155 lacked the supercharged engine, “iS” suspension seat, and a few other bells and whistles.
If you want to find out more about this entry-level touring Sea-Doo, you’ve come to the right place.
We at JetDrift have compiled all you need to know into this 2010-2019 Sea-Doo GTX 155 review!
2010-2019 Sea-Doo GTX 155 Review
The 2010 Sea-Doo GTX was a worthy successor of the 2007-2009 model.It was designed with the new S3 hull completed with the all-new GTX top deck.
The manufacturer offered three different GTX models, including the high-end GTX Limited iS 260, mid-range GTX iS 215, and entry-level GTX 155.
These skis shared the same hull and top deck, but they had different engines and features.
Unlike its more advanced supercharged brothers, the GTX 155 came standard with a standard (non-suspension) seat and a naturally-aspirated 155hp engine.
This ski was manufactured from 2010 through 2019, although it was heavily redesigned for the 2017 season. The 2018 model got the all-new ST3 platform and a revamped top deck.
Two years later, this widely popular model was phased out by the more powerful 2020 GTX 170.
Let’s get down to the nitty-gritty and talk about the GTX 155 in detail!
Sea-Doo GTX 155 Hull
The second-generation Sea-Doo GTX 155 was built on the innovative S3 hull.Released in 2008, the S3 (“Stepped, Stable, Strong”) platform was specifically engineered for the touring Sea-Doo line.
Its special design glued the machine to the surface of the water while significantly reducing water drag. What’s more, its deep keel was a game-changer in choppy water conditions.
In terms of dimensions, the 2010-2017 GTX 155 measured 139 inches in length, 48 inches in width, and 45.9 inches in height.
For 2018, the GTX 155 got the all-new ST3 platform and a refreshed top deck.
This upgraded model measured 135.9 inches in length, 49.2 inches in width, and 44.9 inches in height. Just like its length, the weight of the GTX 155 was also reduced over the years.
The dry weight of the 2010 model was 845 pounds, which went down to 768 pounds for the last production year.
Sea-Doo GTX 155 Engine and Propulsion
The engine of the Sea-Doo GTX 155 was a naturally-aspirated 1494cc Rotax triple rated at 155hp. It was originally labeled as Rotax 4-TEC, which was rebranded as Rotax 1503 NA for the 2016 season.
Despite its new name, the engine remained essentially unchanged.
The key specifications of this power mill were as follows:
- Type: 4-stroke, Inline-3, 12-valve
- Engine power: 155hp (106 kW) @ 7500 RPM
- Naturally-aspirated
- Single over head camshaft (SOHC)
- Compression ratio: 10.6:1
- Water-cooled exhaust system
- Dry sump lubrication system
- Multi-port fuel injection
- Watertight digital ignition
- iTC (Intelligent Throttle Control)
- D-Sea-Bel sound reduction system
- Closed-loop cooling system
- Electric starter
The propulsion system of the GTX 155 was an industry-standard jet pump, of which the features were as follows:
- Axial-flow, single stage design
- Aluminum pump housing
- Replaceable urethane wear ring
- 10-vane aluminum stator with large hub
- Stainless-steel impeller, and a
- Direct driveshaft featuring crowned splines
Sea-Doo GTX 155 Features
The GTX 155 shared many features with its more advanced supercharged versions but lacked the iS suspension seat and the Limited package.
In return, it was equipped with a touring seat and the Sea-Doo exclusive iBR brake and reverse system.
Other features of the Sea-Doo GTX 155 include:
- Interactive Multifunction Digital Information Center
- Sea-Doo learning keys
- Digitally Encoded Security System (D.E.S.S.™)
- Floating safety lanyard
- Handlebar-mounted start/stop buttons
- High-performance electric Variable Trim System (VTS)
- Removable, watertight front storage bin
- Glovebox
- Swim platform storage
- VTS trim system
- Adjustable handlebar
- Tilt steering
- Palm rest grips
- 3-rider touring seat
- iBR brake and reverse
- Seat strap
- Splash deflector
- Dual drain plugs
- Finger throttle lever
- Tow hook
- Mooring cleats
- Bumpers
- Rear grab handle
- Quick latch fuel filler design
- Foam flotation
- Sponsons
- Deck mats
- Adjustable mirrors
- Fold-down reboarding step
- Ski tow eye
Sea-Doo GTX 155 Performance
The Sea-Doo GTX 155 built its reputation on its reliable engine and great comfort.
Although it was less powerful than supercharged models, its engine power was more than enough for many riders. Beginners especially appreciated its easy and predictable handling.
Its deep-V S3 (later ST3) platform ensured industry-leading stability and rough water performance.
The top speed of the GTX 155 was about 56-58 mph depending on the year.
Sea-Doo GTX 155 Specs Charts
For your convenience, we’ve compiled the main specifications of the Sea-Doo GTX 155 into these charts:
Sea-Doo GTX 155 Engine Specs
| Engine Specs | Sea-Doo GTX 155 |
|---|---|
| Type | Rotax (4-TEC / 1503 NA) Single Over Head Camshaft (SOHC) |
| Intake system Type | Naturally Aspirated |
| Electronic Throttle body | 60mm (2.4 in) |
| Number of cylinders | 3 |
| Number of valves | 12 valves (4 per cylinder) with hydraulic lifters (no adjustment) |
| Displacement | 1494 cc (91.2 cu. in) |
| Bore | 100 mm (3.9 in) |
| Stroke | 63.4 mm (2.5 in) |
| Compression ratio | 10.6:1 |
| Ignition system type | IDI (inductive discharge ignition) |
| Starter | Electric |
| Spark plug - Make and type | NGK, DCPR8E |
| Spark plug - Gap | 0.75mm (.03 in) |
| Battery | 12 V, 30 Ah, Electrolyte type |
| Cooling system | Closed-loop system |
Sea-Doo GTX 155 Fluids
| Fluids | Sea-Doo GTX 155 |
|---|---|
| Fuel Type | Regular Unleaded Gasoline |
| Fuel tank capacity | 2010: 18.5 gal. 2011-2019: 16.4 gal |
| Engine oil Type | XPS synthetic blend oil (summer grade). |
| Engine oil Capacity | 3 L (3.2 qt (U.S. liq.)) Oil change w/filter, 4.8 L (5.1 qt (U.S. liq.)) total |
| Cooling system Capacity | 5.5 L (5.8 qt (U.S. liq.)) |
Sea-Doo GTX 155 Propulsion System
| Propulsion system | Sea-Doo GTX 155 |
|---|---|
| Propulsion system | Sea-Doo direct drive |
| Jet Pump | Aluminum, Axial flow, single stage. Large hub with 10-vane stator |
| Impeller | Stainless steel |
| Transmission | Electronic: iBR, Direct drive, (forward/neutral/reverse) |
| VTS system | Yes |
Sea-Doo GTX 155 Dimensions and Capacities
| Dimensions and Capacities | 2010-2013 | 2014-2017 | 2018-2019 |
|---|---|---|---|
| Hull | S3 | S3 | ST3 |
| Number of passengers (Driver incl.) | 3 | 3 | 3 |
| Load limit (passengers + luggage) (lb) | 500 | 600 | 600 |
| Storage capacity (gal) | 13.7 | 16.4 | 27 |
| Dry Weight (lb) | 825 | 816-879* | 768 |
| Length (in) | 139 | 132.9 | 135.9 |
| Width (in) | 48 | 48 | 49.2 |
| Height (in) | 45.9 | 45.9 | 44.9 |
*Specs may vary depending on the model year. These charts are for informational purposes only! For exact specifications, please refer to the factory manual.
Takeaways
As a takeaway, we’ve answered the most common questions about the Sea-Doo GTX 155:
What is a Sea-Doo GTX 155?
The Sea-Doo GTX 155 was an entry-level touring Sea-Doo.
When did the Sea-Doo GTX 155 Come Out?
The Sea-Doo GTX 155 was manufactured from 2007 through 2019.
What Size was a 2010-2019 Sea-Doo GTX 155?
The S3-based (2010-2017) Sea-Doo GTX 155 measured 139 inches in length, 48 inches in width, and 45.9 inches in height. Its revamped (2018-2019) successor was 135.9 inches long, 49.4 inches wide, and 44.9 inched high.
How Much Did a 2010-2019 Sea-Doo GTX 155 Weigh?
The dry weight of the Sea-Doo GTX 155 was 768-879 pounds depending on the model year.
How Many People Could Ride on a Sea-Doo GTX 155?
The Sea-Doo GTX 155 was rated for three riders.
What Kind of Engine was in the Sea-Doo GTX 155?
The Sea-Doo GTX 155 was powered by a 4-stroke, fuel-injected, 1494cc, SOHC, inline-3, Rotax engine.
Was the Sea-Doo GTX 155 Supercharged?
The Sea-Doo GTX 155 utilized a naturally-aspirated engine.
Was the Sea-Doo GTX 155 a 4-Stroke?
The Sea-Doo GTX 155 was powered by a 4-stroke engine.
How Much HP Did a2010-2019 Sea-Doo GTX 155 Have?
The Sea-Doo GTX 155 produced 155hp in stock condition.
How Much Fuel Did a 2010-2019 Sea-Doo GTX 155 Hold?
The fuel capacity of the Sea-Doo GTX 155 was 16 or 18.5 gallons depending on the year and the model.
How Much Oil Did a Sea-Doo GTI SE 133 Hold?
The Sea-Doo GTX 155 required 3.2 US quarts of oil with filter.
How Much Weight Could a Sea-Doo GTX 155 Hold?
The weight capacity of the 2010-2013 Sea-Doo GTX 155 was 500 pounds while in the 2014-2019 seasons it was rated at 600 pounds.
How Much Gear Could a Sea-Doo GTX 155 Carry?
The total storage capacity of the Sea-Doo GTX 155 was 13.7-27 gallons depending on the year.
How Fast Did a Sea-Doo GTX 155 Go?
The top speed of a Sea-Doo GTX 155 was a 56-58 mph under ideal conditions.
Could the Sea-Doo GTX 155 Tow a Skier or a Wakeboarder?
Due to its three-rider saddle, the Sea-Doo GTX 155 could legally tow a wakeboarder or skier.
Did the Sea-Doo GTX 155 Have a Reverse?
The Sea-Doo GTX 155 came standard with an electric reverse system.
Did the Sea-Doo GTX 155 Have a Brake?
The Sea-Doo GTX 155 was manufactured with the iBR brake and reverse system.
How Much Does a Sea-Doo GTX 155 Cost?
The asking price of a used Sea-Doo GTX 155 varies between $5,000 and $12,000 depending on the year and its condition.
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