FEATURED 2021  Sea-Doo  RXT-X  300 - 70158

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MSRP $17,999

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    2021 Sea-Doo RXT-X 300

    Rear cargo LinQ system

    Fast. Easy. Secure.
    Extra rear storage is now possible with the secure quick-attach LinQ system. It allows to easily snap a fuel caddy and a bag, or a cooler, to the back of your watercraft using two convenient, integrated attachment points.

    Large swim platform

    Configurable. Comfortable. Groundbreaking.
    The first watercraft to hang out on the water with the largest swim platform in the industry. Flat, stable and comfortable, it is ideal for boarding, lounging, and prepping for tow sports. Create even more space by removing the rear seat.

    At Rest. At Speed. Always Steady.

    Stable and predictable hull
    Whether you’re at high speeds pounding rough offshore waters, at rest hanging out in a cove or you’re simply boarding from the side, the wider hull offers industry leading stability thanks to a lower center of gravity and improved hull design.

    The most powerful engine on a Sea-Doo, ever

    Rotax 1630 ACE engine
    Supercharged with an external intercooler, the advanced combustion efficiency (ACE) technology delivers high efficiency and amazing acceleration. This is the most powerful engine on a Sea-Doo producing a thrilling 300-hp.

    Ingenious storage

    Direct access front storage
    All your gear is now within arm’s reach. The industry’s first direct-access front storage opens by simply raising the handlebar assembly. No standing required. It's the smartest water-resistant storage we've ever built into a watercraft, offering room for your next adventure.

    Lock in your seat

    Ergolock system with modular seat
    The narrow racing seat places your knees closer together to hold on tighter while improving the transition into standup riding. Plus, the removable rear seat gives you even more space for hanging out on the rear platform, sunbathing or a face-to-face picnic.

    Features May Include:

    Closed-loop cooling system
    A Sea-Doo Exclusive

    • This technology prevents corrosive saltwater and damaging debris from entering the engine, for increased reliability and peace of mind.

    Intelligent brake and reverse

    The Industry’s first and most intuitive on-water brake

    • Recognized by the U.S. Coast Guard for improving boat safety and now in its third generation, the Sea-Doo exclusive iBR system allows you to stop sooner. With both hands on the handlebars, riders can engage forward, neutral, and reverse for stable, worry-free maneuvering at low speeds.

    Wide digital display
    Fully Digital Gauge

    • The 7.6 inches wide digital display offers riders an improved user experience when cycling through modes and locating vehicle information. It also features an automatically dimming backlight that ensures high visibility in any light. The larger display area makes for improved visibility when riding.

    X Package
    Take performance further

    • Add on the performance package. With X-Sponsons for cornering stability and our innovative ErgoLock System featuring a narrow racing seat, specially angled footwell wedges and adjustable X-steering, you and the machine become one.

    Precision tuning
    Variable Trim System with Launch Control

    • Quickly access the Variable Trim System (VTS) on the handlebar for fine-tuned handling based on rider preference, water conditions, and number of passengers. Plus a handlebar-activated launch control to provide perfectly controlled acceleration.

    Music onboard
    Bluetooth Audio-Premium System

    • The industry's first fully-integrated waterproof Audio System will keep the fun going anywhere you go, with 100 watts of total system power, fully-waterproof performance, Bluetooth connectivity, and external playback controls to ensure the perfect song is always on deck.

    Dealer Notes

    This absolutely gorgeous Midnight Purple 2021 Sea-Doo RXT-X 300 with Sound System has only 64 miles and comes with a Yacht Club Trailer!  This 3 seater machine is turn key and ready for the water.  Fresh water only and always stored in heated garage.  It comes with a Sea-Doo full cover, Sea-Doo snap in bumper kit, Sea-Doo folding anchor, Sea-Do0 boarding ladder, mens and womens ski vests, goggles, bumpers, tie downs, safety kit, and fire extinguisher.  There is the balance of an 84 month AGWS Platinum warranty from the orignal date of sale (5 years of remaining transferrable warranty comes with it as well).  iTC™ (Intelligent Throttle Control) System



    Personal Watercraft













    Stock Number



    Personal Watercraft






    Westfield NY


    Engine Type

    1630 ACE™- 300


    300 hp


    Supercharged with external intercooler

    Engine (Displacement)

    1630 cc

    Cooling System

    Closed-Loop Cooling System (CLCS)

    Fuel Type

    91 octane


    iTC™ (Intelligent Throttle Control) System


    D-Sea-BeI™ System

    Weight (Wet)

    600 lb / 272 kg

    Fuel Capacity

    18.5 US gal / 70 L


    capacity of the glove box: 0.8 US gal / 2.9 L


    Vehicle: 135.9" / 345.1 cm


    Vehicle: 49.4" / 125.5 cm


    Vehicle: 45.2"/ 114.7 cm

    Weight (Dry)

    829 lb / 376 kg


    ST3 Hull™

    Hull Material



    5 Year AGWS Warranty Transfer