Compare Specs Discover '24 PWCs Browse Reviews
2023 Sea-Doo RXP-X Apex 300 Specs and Review [Video]

2023 Sea-Doo RXP-X Apex 300 Specs and Review [Video]

Update: The new RXP-X 325 is here with the amazing 325hp engine option!

The Sea-Doo RXP-X Apex 300 is considered the flagship model in the 2023 Sea-Doo lineup. This ski is an upgraded version of the base RXP-X 300, featuring a unique color scheme, carbon fiber components, the special Hydraulic Steering Damper, and the Tech Package.

If you want to find out more about this ski, you’ve come to the right place.

We at JetDrift have compiled all you need to know into this detailed 2023 Sea-Doo RXP-X Apex 300 review!

2023 Sea-Doo RXP-X Apex 300 Review

The manufacturer introduced the RXP-X Apex 300 as “the most exclusive high-performance PWC ever created by Sea-Doo,” and with good reason.

Although this ski shares a great deal in common with the base RXP-X 300, it was pimped up with some race-intended features.

Let’s get down to the nitty-gritty and talk about them in detail!

The Sea-Doo RXP-X Apex 300 Hull and Capacities

The RXP-X Apex 300 is built on the proven T3-R hull measuring 130.6 inches in length, 49.2 inches in width, and 44 inches in height (with the steering in a low position).

You can expect the dry weight of the ski to be 780 pounds while its load limit is 400 pounds.

This massive hull can carry two adult riders with the optional passenger seat, but the standard racing seat offers space for only one rider. You can load your gear into a roomy front storage compartment and a watertight glove box, which have a total capacity of 40.6-gallons.

The sporty but convenient cockpit is equipped with a wide range of race-intended features, including a low-rise racing handlebar, hydraulic steer damper, Ergolock-R System with a racing seat, and double-angled footwell wedges.

While its base brother is available in Premium Triple Black and Millennium Yellow color scheme, the Apex is dressed in a Graphite Gray/Racing Green.

The racing attitude of this ski is also enhanced with a carbon fiber hood and mirrors, plus blacked-out logos.

The Sea-Doo RXP-X Apex 300 Engine and Propulsion

To the greatest regret of many fans, the Apex 300 didn’t get an upgraded engine option.

This means that under the hood there’s the standard supercharged 1630 ACE 300 engine, pretty much the same one as in the base RXP-X 300, the RXT-X 300, and the GTX 300/GTX 300 Limited.

Marketed as the most powerful Sea-Doo engine, this 1630cc, SOHC, 4-stroke triple puts out 300 HP (217 kW) at 8000 RPM.

Engine power is delivered to a standard axial-flow, single-stage Sea-Doo jet pump. This heavy-duty aluminum jet pump utilizes a stainless steel impeller and a large hub with double-row ball bearings.

Despite the Apex featuring a direct drive system, the engine houses a special “reverse gear” called iDF (Intelligent Debris Free system). This feature is intended to clear the pump area with the press of a button, so it doesn’t act as a reverse gear.

Just like any other Sea-Doo, the RXP-X Apex 300 can also be backed up and slowed down with the iBR reverse bucket.

The top speed of the Apex 300 is a (limited) 67 mph and it can accelerate from 0 to 50 mph in under 3 seconds. This breathtaking power, matched with its race-inspired handling results in an outstanding riding experience!

The Sea-Doo RXP-X Apex 300 Features

In a nutshell, the standard features of the Sea-Doo RXP-X Apex 300 are as follows:

Let’s talk about the most exciting ones in detail!

Hydraulic Steering Damper

There’s no question that the most unique feature of the Apex 300 is its hydraulic steering damper.

As the name suggests, this component is designed to dampen the forces caused by choppy waters. This results in less fatigue and more comfortable rides, especially in rough water conditions.

Low-rise racing handlebar

The RXP-X Apex 300 can be steered by a low-rise racing handlebar, ensuring a more race-focused and aggressive riding position.

Ergolock-R System

The Ergolock-R System offers outstanding ergonomics, which virtually “locks” you to the machine. This system includes unique deep knee pockets, a sticky seating surface, and the high-backed Sea-Doo racing seat.

A passenger seat is also available for the Apex 300 as an option.


The race-inspired “X-sponsons” also contribute to the precise handling and increased turning abilities.

Double-angled footwell wedges

Besides high-performance sponsons, another key feature of this ski is its double-angled footwell wedges. They offer great support for your feet, translating to more stability and safety during aggressive accelerations and tight turns.

VTS – Variable Trim System

You can set the position of the jet nozzle quickly with the VTS buttons on the left handlebar. A perfect trim setting helps you get the most out of the craft and avoid porpoising.

Launch Control

A unique feature of the Apex 300 is its button-press launch control, which can help you handle the massive power of this supercharged machine.

Just activate the launch control with the VTS buttons and accelerate like a pro!

Tech Package

Although the Tech Package is available on most Sea-Doos as an option, it comes standard on the Apex 300.

This package includes the following useful features:

  • Full-color 7.8-inch display
  • Bluetooth connectivity
  • USB and smartphone app integration
  • BRP Bluetooth Audio Premium system
This package is optional on the standard RXP-X 300.

Sea-Doo RXP-X Apex 300 Specs Chart

Sea-Doo RXP-X Apex 300 Engine Specs

EngineRotax 1630 ACE - 300
Engine type4-stroke, Single Over Head Camshaft (SOHC)
Declared Power217 kW @ 8000 RPM
InductionSupercharged and intercooled
Number of cylinders3
Number of valves12 valves with hydraulic lifters (no adjustment)
Bore100 mm (3.9 in)
Stroke69.2 mm (2.7 in)
Displacement1 630.5 cm³ (99.5 in³)
Compression ratio8.45:1

Sea-Doo RXP-X Apex 300 Fuel System

Fuel System
Fuel injection typeMultipoint fuel injection with iTC (intelligent Throttle Control). Single throttle body (60 mm) with an actuator
Idle speed (not adjustable)1800 +/- 50 RPM
Fuel pumpIn-tank electrical
Fuel TypePremium unleaded (Refer to Fuel Requirements)
Fuel Octane Rating91 Pump Posted AKI ((RON + MON)/2 or 95 (RON) E10
Fuel Tank Capacity - Full70 l (18.5 gal(liq.,US))
Fuel Tank Capacity - Reserve (from low level signal - approx.)14 l (3.7 gal(liq.,US))

Sea-Doo RXP-X Apex 300 Lubrication

Engine Recommended oilXPS 4T 5W40 Synthetic blend oil
Engine Oil Capacity3 l (3.2 qt(liq.,US)) oil change w/ filter 5 l (5.3 qt(liq.,US)) total

Sea-Doo RXP-X Apex 300 Cooling System

Cooling System
TypeClosed-loop cooling system (CLCS)
Coolant RecommendedXPS Extended life pre-mixed coolant
Coolant AlternativeUse a low silicate, extended life ethylene-glycol premixed coolant (50%-50%) specifically formulated for internal combustion aluminum engines.
Cooling System Capacity3.0 l (3.2 qt(liq.,US))

Sea-Doo RXP-X Apex 300 Electrical System

Electrical System
Battery12 V, 18 Ah
Total system output420 W @ 6000 RPM
Ignition system typeIDI (Inductive Discharge Ignition)
Spark plug - TypeNGK, KR9C-G with solid post or equivalent
Spark plug - Gap0.80 to 0.90 mm (.031 to .035 in)

Sea-Doo RXP-X Apex 300 Propulsion

Propulsion SystemSea-Doo jet pump
Jet Pump TypeAxial flow, single stage. Large hub with double row ball bearings
Jet Pump MaterialAluminum
ImpellerStainless steel
Transmission TypeDirect drive

Sea-Doo RXP-X Apex 300 Weight and Loading Capacity

Weight and Loading Capacity
Dry weight (no oil, no coolant, no fuel, with accessories and no sound system)354 kg (780 lb)
Sound system weight9 kg (19.8 lb)
Number of passenger (driver incl.)2
Load limit (passenger(s) and luggage, including accessories))182 kg (400 lb)
Storage capacity153.7 l (40.6 gal(liq.,US))

Sea-Doo RXP-X Apex 300 Dimensions

Overall length331.8 cm (130.6 in)
Overall width125 cm (49.2 in)
Overall height (steering in low position)111 cm (44 in)
These charts are for informational purposes only! For exact specifications, please refer to the factory manual.

Takeaways – FAQs About the Apex 300

As a takeaway, we’ve answered the most common questions about the Sea-Doo RXP-X Apex 300!

What is a Sea-Doo RXP-X Apex 300?

The Sea-Doo RXP-X Apex 300 is a limited-edition high-performance personal watercraft manufactured by the Canadian BRP.

When did the RXP-X Apex 300 Come Out?

The Sea-Doo RXP-X Apex 300 was introduced in 2022 for the 2023 model year.

What Size is a Sea-Doo RXP-X Apex 300?

The Sea-Doo RXP-X Apex 300 measures 130.6 inches in length, 49.2 inches in width, and 44 inches in height.

How Much Does a Sea-Doo RXP-X Apex 300 Weigh?

The dry weight of the Sea-Doo RXP-X Apex 300 is 780 pounds, but fully loaded it can reach a whopping 1180 pounds.

How Much Weight Can a Sea-Doo RXP-X Apex 300 Carry?

The load limit of the RXP-X Apex 300 is 400 pounds while its total storage capacity is 40.6 gallons.

How Many People can Ride on a Sea-Doo RXP-X Apex 300?

The RXP-X Apex 300 can carry 1 rider on its stock racing seat, but with the optional passenger saddle it can carry two adult riders.

What Kind of Engine is in the Sea-Doo RXP-X Apex 300?

The RXP-X Apex 300 is powered by a Rotax 1630 ACE 300 engine. This unit is a 1630cc, 4-stroke, fuel-injected, SOHC, 3-cylinder power mill.

Is a Sea-Doo RXP-X Apex 300 a Supercharged?

Yes, the RXP-X Apex 300 utilizes a supercharged engine.

Is the Sea-Doo RXP-X Apex 300 a 4-stroke?

Yes, the Sea-Doo RXP-X Apex 300 is powered by a 4-stroke triple engine.

How Much Horsepower Does a Sea-Doo RXP-X Apex 300 Have?

As the name suggests, the Sea-Doo RXP-X Apex 300 produces 300 HP (217 kW) at 8000 RPM.

How Much Fuel Does a Sea-Doo RXP-X Apex 300 Use?

Generally, the RXP-X 300 gets about 20-22 GPH at full throttle and 7 GPH at best cruising speed in ECO mode (approx. 39-41 mph).

How Much Fuel Does a Sea-Doo RXP-X Apex 300 Hold?

The Sea-Doo RXP-X Apex 300 is equipped with an 18.5-gallon fuel tank including a 3.7-gallon reserve.

What is the Fuel Range of the Sea-Doo RXP-X Apex 300?

The theoretical fuel range of the Sea-Doo RXP-X Apex 300 is about 89 statute miles at the best cruising speed, with a 10% fuel reserve.

How Fast Does a Sea-Doo RXP-X Apex 300 Go?

The top speed of a Sea-Doo RXP-X Apex 300 is a (limited) 67 mph under ideal conditions.

Does the Sea-Doo RXP-X Apex 300 Have Reverse?         

Yes, the Sea-Doo RXP-X Apex 300 comes with iBR, which is literally the brake system on Sea-Doos.

Do Sea-Doo RXP-X Apex 300s Have Speakers?

Yes, the Sea-Doo RXP-X Apex 300 comes with the Tech Package as standard including a fully-integrated 100W BRP Premium Audio System.

How Much is a Sea-Doo RXP-X Apex 300?

The amazing Sea-Doo RXP-X Apex 300 is marketed for $20,999, while the Base RXP-X 300 costs “only” $16,799. However, the latter lacks the tech package, hydraulic steering dampener, and unique design.

It’s also good to know that the RXP-X Apex 300 is offered as a limited-edition model, which is only available via pre-order until November 30, 2022.

What Distinguishes the base RXP-X 300 from the RXP-X Apex 300?

The extra features on the Apex over the base RXP-X are as follows:

  • Racing Green and Graphite Gray coloration
  • Carbon fiber hood
  • Carbon fiber mirrors
  • Improved seating details and footwell carpets
  • Matching handgrips
  • Premium badging
  • Blacked out logos
  • Hydraulic steering damper
  • Launch control
  • Tech package (standard)
  • Higher price tag ($16,799 vs. $20,999)
Otherwise, the Apex is identical to the standard RXP-X 300.

This is our short Sea-Doo RXP-X Apex 300 review, we hope you like it!