2018 Sea-Doo GTI SE 155


Enjoy the Intelligent Brake and Reverse (iBR) and many convenience features such as a Touring Seat, Reboarding Ladder and Variable Trim System (VTS). Plus, choose between 3 engine options, including the fuel-efficient Rotax - 900 HS ACE.


  • 3 ENGINE OPTIONS: Choose from one of three proven Rotax engines. From the fuel-efficient Rotax 900 HO ACE to the Rotax 1503 NA.
  • CONVENIENCE FEATURES: This model comes standard with 30.8 US gal. (116.6 l) of storage space, a touring seat, a cruise control with slow mode, additional gauge functions (Time/Distance to empty, altitude indicator), a ski tow eye and a reboarding ladder.
  • INTELLIGENT BRAKE AND REVERSE (iBR): Exclusive to Sea-Doo, the second generation iBR system lets you stop close to 160 feet sooner (48.75 m)*. And offers more control and maneuverability. *Based on BRP internal testing
  • VARIABLE TRIM SYSTEM (VTS): Adjust the nose angle of the watercraft higher (for better stability at high speeds) or lower (for towing and quick starts) based on rider preference, water conditions, and number of passengers.
  • INTELLIGENT THROTTLE CONTROL (iTC): Choose how you want your power delivered thanks to different riding modes such as Touring, Sport and ECO - available through your watercraft digital information center.
  • CLOSED-LOOP COOLING SYSTEM: This technology prevents corrosive saltwater and damaging debris from entering the engine, for increased reliability and peace of mind.
  • ANTI-THEFT SECURITY SYSTEM AND iCONTROL LEARNING KEY: Design features a Digitally Encoded Security System unique to your watercraft that serves as an effective theft deterrent. Learning Key also limits speed for beginners.

General Information

Manufacturer Sea-Doo
Model Year 2018
Model GTI SE 155
Model Code GTISE155
Color Black / Sunrise Orange


Hull Material Composite
Hull Type Modified Vee
Storage 30.8 US gal. (116.6 l)


Length 132.6 in. (336.8 cm)
Width 48.5 in. (123.1 cm)
Weight Dry - 790 lb. (359 kg)


Propulsion System iBR (Intelligent Brake & Reverse System)
Impeller Stainless steel


Exhaust D-SEA-BEL™ System
Fuel Type 87 octane
Cooling Closed-Loop Cooling System (CLCS)
Engine Rotax® 1503 NA 4-TEC®
Displacement 1,494 cc
Fuel Capacity 15.9 US gal. (60 l)
Starter Electric
Fuel System Naturally aspirated


Weight Capacity 600 lb. (272 kg)
Seating 3


Additional Colors

Black / Sunrise Orange

Beach Blue Metallic / Lava Grey

Warranty BRP limited warranty covers the watercraft for one year.