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  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Used-2021-Sea-Doo-RXT®-X® 300 Millenium Yellow
  • Pre-owned
  • In Stock
  • East Coast Cycle Center
  • SD15586J
  • YDV15586J021
  • Personal Watercraft
  • 3-Passenger
  • Millenium Yellow
  • Gas
  • 11 ft 3.90 in

2021 Sea-Doo RXT®-X® 300 Millenium Yellow

Its revolutionary lighter platform, combined with the Ergolock System, maximizes control in any condition, setting a sky-high bar for rough water performance. With the 300-hp engine, 60 mph (96 km/h) is just a few seconds away.

Features may include:

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.

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.

  • Pre-owned
  • SD15586J
  • 2021
  • Sea-Doo
  • RXT®-X® 300 Millenium Yellow
  • Personal Watercraft
  • 3-Passenger
  • YDV15586J021
  • 1630 ACE™- 300
  • F/N/R
  • ST3™ Hull
  • Gas
  • 11 ft 3.90 in
  • 1630 ACE™- 300
  • 1630 cc
  • Closed-Loop Cooling System (CLCS)
  • 300 hp
  • 91 octane
  • Supercharged with external intercooler
  • Electronic iBR®
  • System: iTC™ (Intelligent Throttle Control) System
  • D-Sea-BeI™ System
  • 135.9" / 345.1 cm
  • 49.4" / 125.5 cm
  • 45.2"/ 114.7 cm
  • 3
  • 18.5 US gal / 70 L
  • 26.1 US gal / 98.9 L | Glove box: 0.8 US gal / 2.9 L | Front Bint: 25.3 US gal / 96 L
  • 600 lb / 272 kg
  • 829 lb / 376 kg
  • 7.6'' Wide Digital Display | Main Functions: Speedometer, RPM, Clock, VTS™ Display, Top Speed & Average Speed, Vehicle Hour Display, Sport Mode, ECO® Mode, Slow Mode, Speed Regulator, Launch Control
  • iControl®, ECO® Mode, Ergolock™ Racing Seat, Split Seat (2 parts), Ergolock™ System, Seat Strap, Trim Tabs, Launch Control, Ski Tow Eye, RF D.E.S.S.™ Key | LinQ™ Attachment System (Accessory): Wide-Angle Mirrors, Handlegrip with Palm Rests, Footwell Carpets, Large Swim Platform, Tilt Steering, iControl®, ECO® Mode, Ergolock™ Racing Seat, Split Seat (2 parts), Ergolock™ System, Seat Strap, Trim Tabs, Extended VTS™ (Variable Trim System), Ski Tow Eye, RF D.E.S.S.™ Key, Direct Access Front Storage, Watertight Phone Box Compartment , Wide-Angle Mirrors Handlegrip with Palm Rests Footwell Carpets Large Swim Platform Tilt Steering iControl® ECO® Mode Ergolock™ Racing Seat Split Seat (2 parts) Ergolock™ System Seat Strap Trim Tabs Extended VTS™ (Variable Trim System) Ski Tow Eye RF D.E.S.S.™ Key Direct Access Front Storage Watertight Phone Box Compartment, Wide-Angle Mirrors Handlegrip with Palm Rests Footwell Carpets Large Swim Platform Tilt Steering
  • ST3 Hull™ | Material: Fiberglass
  • BRP limited warranty covers the watercraft for one year.

Get an Estimate for Your Payment

  • Estimated Payment
  • Calculation is estimate only.

Advertised pricing excludes applicable taxes title and licensing, dealer set up, destination, reconditioning and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.