2008-2011 Sea-Doo RXP-X 255 Specs and Review [Video]

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Sea-Doo released the supercharged RXP-X 255 for the 2008 model year. It shared its hull and most features with the RXP 215, but it had a revamped 255 HP engine. The RXP-X 255 was marketed from 2008 through 2011 and was replaced by the RXP-X 260 for 2012.

If you want to learn all about this flagship performance Sea-Doo, this post is for you.

We at JetDrift have compiled all you need to know into this Sea-Doo RXP-X 255 review!

Sea-Doo RXP-X 255 Review

The Sea-Doo RXP Family

Sea-Doo introduced its deservedly-popular RXP series for 2004. This high-performance jet ski family replaced the outdated 2-stroke XP DI.

Since then, the RXP family has undergone five different generations, including:

Surprisingly, in the 2008 season, Sea-Doo offered the RXP in three different configurations.

The entry-level model in this breed was the RXP 155, powered by the naturally-aspirated 155 HP engine option. This model came with less durable cast pistons, a plastic pump housing, and lacked the VTS trim system as well.

Due to these drawbacks, the 155 never became popular among riders.

In contrast, the RXP 215 was powered by a supercharged, 215 HP engine featuring forged pistons and an external intercooler. Also, its jet pump was made of more durable aluminum and it was fitted with the innovative (VTS) electric trim system.

By 2008, the manufacturer released two new models to celebrate the 20th anniversary of the first “modern” Sea-Doo (the brand was first launched in 1968).

Also known as the “X Series,” the RXP-X 255 and RXT-X 255 significantly raised the benchmark in the performance PWC segment.

These models were revamped versions of the proven RXP 215 and RXT 215, respectively.

Sea-Doo RXP-X 255 Hull and Engine

Like its smaller brothers, the RXP-X 255 was built on the proven RXP platform, measuring 121 inches in length, 47 inches in width, and 41 inches in height.

This hull was based on the GTI hull, but it had front spray deflectors and redesigned chines.

RXP models also shared most features and the same base Rotax 1503 engine.

But as the name suggests, this power source in the RXP-X 255 was tuned for an amazing 255 HP! The key features of the 1503 Rotax 255 HP engine included:

  • 1494cc, 3 cylinder in-line
  • Rotax Multipoint Fuel Injection
  • Induction type: supercharger with external intercooler
  • 12 valves (4 valves per cylinder) – SOHC
  • Dry sump oil injection system
  • Closed-loop cooling system
  • NGK DCPR8E spark plugs (x3)
  • Electric starter

Are you wondering where this engine option got the extra 40 horsepower?

Compared to its 215 HP predecessor, the 255 HP Rotax 1503 was upgraded with some new features, which were as follows:

  • Revised Vortex supercharger (with a larger intake tube)
  • Larger aluminum intercooler
  • More advanced fuel injectors
  • Remapped ignition system
  • Metal supercharger clutch washers
  • Other crucial changes to the engine for increased durability and reliability

These improvements were enough to boost engine power from 215 HP up to 255 HP and made the RXP-X the most powerful PWC of its time.

Engine power was delivered to a full-aluminum jet pump featuring a .7-inch (18mm) wider pump tunnel. The pump was also moved towards the stern by 7.9 inches (200 mm) to increase the size of the intake.

This intake redesign was necessary to meet the’s pump increased water demand.

What’s more, the VTS system also saw some changes as it already ensured a faster and smoother operation.

Sea-Doo RXP-X 255 Features

Besides its more advanced power source and propulsion, the other thing that made the RXP-X special was its unique look.

Its distinguished Hyper Silver color scheme was completed with chrome parts, a custom “X-Racing seat,” and diamond plate mats.

The aluminum “X-handlebars” were also specifically engineered for this ski. They were made wider than standard handlebars and featured an adjustable design and a billet aluminum finger-throttle.

The latter was a game-changer as it ensured a much more precise throttle control and didn’t cause the rider’s hand to get so tired out.

Standard features of the 2008 Sea-Doo RXP-X 255 were as follows:

  • X-handlebars
  • Billet finger throttle
  • High-performance VTS
  • X-traction footwell carpet and deck pad
  • X-racing seat
  • Speedometer
  • Tachometer
  • Fuel gauge
  • Information Center (20 functions)
  • D.E.S.S.™
  • O.P.A.S.™ system
  • Sea-Doo Learning Key™ (LK1 or LK2)
  • Mirrors
  • Double density comfort hand grips
  • Removable engine hatch
  • Reboarding ladder (OPT)
  • Handlebar-mounted start/stop button
  • Handlebar-mounted function buttons
  • Front storage
  • Glove box
  • Rear storage basket
  • Electric start
  • Safety lanyard
  • Mooring cleats
  • Overheating warning device
  • Bow and stern eyes
  • Ski tow eye
  • Bilge drain plugs
  • Flushing connector
  • Side vanes
  • Sponsons
  • Rear grab handle
  • Manual reverse

Riding Experience

There’s no question that the RXP-X 255 was one of the fastest PWCs in the late 2000s.

Thanks to its revamped supercharged engine, the top speed of the ski was about 65-67 mph in stock condition. With some aftermarket modifications, it could be increased up to 73-75 mph.

Keeping safety in mind,  this high-performance Sea-Doo came with two DESS learning keys, which restricted the top speed to about 35 or 50 mph, respectively.

As far as acceleration, the RXP-X 255 could go from 0 to 50 mph in 2.9 seconds, thanks to its industry-leading power-to-weight ratio.

Surprisingly, this ski had excellent straight-line stability, even when riding at high speeds.

But the RXP-X was not only extremely fast, but it also offered outstanding overall handling.

No matter how aggressively you rode, it could virtually turn on a dime, so spinning around buoys was no issue. Unlike base RXP models, the RXP-X wasn’t prone to digging its bow into the water.

Instead, it remained stable and predictable even in the tightest turns.

The riding position was moved forward, which ensured a more athletic attitude, while the motorcycle-like “X-racing seat” allowed the rider to quickly move side-to-side.

On top of that, the outdated slippery deck mats were also replaced with high-quality X-traction footwell mats. This new feature enhanced the look of the ski and provided a much better grip.

Thanks to its superb handling and performance, the RXP-X quickly became popular among racers and performance-minded riders.

Sea-Doo marketed this model from 2008 through 2011. By 2012, the RXP-X 255 had been replaced by the more advanced RXP-X 260.

2008 Sea-Doo RXP-X 255 Specs Chart

For your convenience, we’ve compiled the Sea-Doo RXP-X 255 specifications into these charts!

2008 Sea-Doo RXP-X 255 Dimensions

2008 Sea-Doo RXP-X 255Dimensions and Capacities
Number of passengers2 (refer to load limit)
Overall length307 cm (121 in)
Overall width122 cm (48 in)
Overall height116 cm (45.8 in)
Dry Weight361 kg (795 lb)
Load limit181 kg (399 lb)
Storage capacity40.3L (10.7 U.S. gal)
Fuel tank (including reserve)60 L (15.9 U.S. gal)
Fuel tank reserve (from low level signal)15 L (4 U.S. gal)
Cooling system (coolant)5.5 L (5 U.S. qrt) total
Engine oil3 L (2.7 U.S. qt) oil change w/filter - 4.5 L (4.1 U.S. qt) total

2008 Sea-Doo RXP-X 255 Engine Specs

2008 Sea-Doo RXP-X 255Engine Specs
Engine type Rotax® 4-TEC®. Single Over Head Camshaft (SOHC)
Number of cylinder 3 in-line
Number of valve12 valves (4 per cylinder) with hydraulic lifters (no adjustment)
Exhaust system Water cooled / water injected with regulator
Intake systemSupercharger with external intercooler
Throttle body52 mm
Performance255 HP
Displacement 1494 cm3 (91.2 in3)
Bore100 mm (3.9 in)
Stroke63.4 mm (2-1/2 in)
Compression ratio8.4:1
Cooling TypeClosed-loop cooling
CoolantEthylene-glycol 50%/50% antifreeze/water. Coolant containing corrosion inhibitors for internal combustion aluminum engines
Fuel injectionRotax EMS (engine management system). Multipoint Fuel Injection. Single throttle body (52 mm (2.04 in))
Lubrication typeDry sump (2 oil pumps). Replaceable oil filter. Water-cooled oil cooler.

2008 Sea-Doo RXP-X 255 Liquids

2008 Sea-Doo RXP-X 255Liquids
Fuel typeUnleaded gasoline - Inside North America: 91 (R + M)/2, Outside North America: 95 RON
CoolantEthylene-glycol 50%/50% antifreeze/water. Coolant containing corrosion inhibitors for internal combustion aluminum engines

2008 Sea-Doo RXP-X 255 Propulsion

2008 Sea-Doo RXP-X 255Propulsion
Propulsion systemSea-Doo® direct drive
Jet pump typeAxial flow, single stage. Large hub with 10-vane stator
Jet pump materialAluminum
Transmission typeDirect drive, forward/neutral/reverse
Trim systemElectric VTS (Variable Trim System)
Reverse systemYes
ImpellerStainless steel
Minimum required water level for jet pump90 cm (3 ft) underneath the lowest rear portion of the hull

2008 Sea-Doo RXP-X 255 Electrical Features

2008 Sea-Doo RXP-X 255Electrical Features
Ignition system type Digital inductive
Spark plug – Quantity3
Spark plug - Make and typeNGK, DCPR8E
Spark plug - Gap0.75 mm (.030 in)
Starting systemElectric starter
Battery12 V, 30 Ah, Electrolyte type

These charts are for informational purposes only! For exact specifications, please refer to the factory manual.

Sea-Doo RXP-X 255 for Sale

If you are considering purchasing one, you probably want to know where to find a Sea-Doo RXP-X 255 for sale. As this model vanished from the market in 2011, it’s already a collectible item, so finding one is not an easy task!

We recommend that you start your research on dedicated Sea-Doo forums and Facebook fan groups. Aside from some good deals, you may find some valuable info there about this ski.

Besides these sources, you may also find some used Sea-Doo RXP-X 255s for sale on Craigslist, PWC Trader, and other dedicated jet ski swap sites.

Takeaway

As a takeaway, we’ve answered the most common questions about the Sea-Doo RXP-X 255!

What is a Sea-Doo RXP-X 255?

The Sea-Doo RXP-X 255 was a supercharged “musclecraft” jet ski.

What Year did Sea-Doo Make the RXP-X 255?

Sea-Doo marketed the RXP-X 255 from 2008 through 2011.

How Many People Could Ride a Sea-Doo RXP-X 255?

The Sea-Doo RXP-X 255 was rated for two riders, but it was really more of a solo machine.

What Size Storage Compartment Did a Sea-Doo RXP-X 255 Have?

The Sea-Doo RXP-X 255 featured a small glove box, a front bin, and an under-seat storage box with a total storage capacity of 10.7 gallons.

Was the Sea-Doo RXP-X 255 Supercharged?

Yes, the RXP-X 255 was powered by a supercharged Rotax engine.

What Size was the Sea-Doo RXP-X 255?

The Sea-Doo RXP-X 255 was 121 inches long, 47 inches wide, and 42 inches high.

How Much Did a Sea-Doo RXP-X 255 Weigh?

The dry weight of the Sea-Doo RXP-X 255 was 795 pounds.

What Kind of Engine Did the Sea-Doo RXP-X 255 Have?

The Sea-Doo RXP-X 255 engine was a supercharged and intercooled 4-stroke ROTAX 1503. This 1494 cc, SOHC triple featured a closed-loop cooling system and a Multipoint Fuel Injection system.

How Much Horsepower Did a 2008-2011 Sea-Doo RXP-X 255 Have?

The Sea-Doo RXP-X 255 provided 255 HP.

How Many cc Was a Sea-Doo RXP-X 255?

The Sea-Doo RXP-X 255 featured a 1494 cc triple engine.

Was a Sea-Doo RXP-X 255 a 4-Stroke Ski?

Yes, the Sea-Doo RXP-X 255 utilized a 4-stroke engine.

Did the Sea-Doo RXP-X 255 Have Reverse?

Yes, the Sea-Doo RXP-X 255 was equipped with manual reverse.

How Much Weight Could a Sea-Doo RXP-X 255 Hold?

The total weight capacity of the Sea-Doo RXP-X 255 was 536 pounds.

How Much Fuel Did a Sea-Doo RXP-X 255 Hold?

The Sea-Doo RXP-X 255 utilized a 15.9-gallon (60 L) fuel tank.

How Much Fuel Did a Sea-Doo RXP-X 255 Use?

The fuel consumption of the Sea-Doo RXP-X 255 was about 20.5 GPH at WOT.

Could the Sea-Doo RXP-X 255 Tow a Skier or a Wakeboarder?

No, the Sea-Doo RXP-X 255 was rated for two riders, so it wasn’t recommended for tow sports.

How Fast Did a 2008-2011 Sea-Doo RXP-X 255 Go?

The top speed of a 2008-2011 Sea-Doo RXP-X 255 was 65-67 mph in stock condition.

How Fast Did a Sea-Doo RXP-X 255 Go from 0 to 50?

The Sea-Doo RXP-X 255 could go from 0 to 50 mph in under 2.9 seconds.

How Much is a 2008-2011 Sea-Doo RXP-X 255 Worth?

It’s hard to tell the exact price of a first-generation Sea-Doo RXP-X 255, as it strongly depends on its year, condition, and location. But as a rule of thumb, the prices typically range from $5,000 up to $9,000.

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