Sea-Doo RXP-X 325 RS Top Speed and Marine Engineering Analysis
Sea-Doo RXP-X 325 RS – The world's fastest production personal watercraft for 2026, engineered to dominate the Extreme PWC class.
1. Technical Overview
The Sea-Doo RXP-X 325 RS represents the absolute pinnacle of personal watercraft engineering for 2026. As the successor to the legendary RXP-X 300, this new flagship model from Bombardier Recreational Products (BRP) pushes the boundaries of what's possible from a production watercraft. The "325" designation signals a horsepower increase, while "RS" stands for Racing Superiority, reflecting its closed-course competition DNA.
Designed with a single objective—to become the fastest production PWC ever offered to the public—the RXP-X 325 RS features an upgraded Rotax 1630 ACE engine producing an estimated 325 horsepower. Combined with an aggressive aero package derived from BRP's racing program, this watercraft is engineered to exceed the 107 km/h barrier that defined the previous generation. With a limited production run and race-ready components straight from the factory, the RXP-X 325 RS is the ultimate expression of Sea-Doo's performance engineering philosophy.
2. Top Speed & Water Velocity
The RXP-X 325 RS is built to break records. While official GPS verification is still underway as of early 2026, BRP's engineering targets and preliminary testing suggest this watercraft will become the first production PWC to exceed 110 km/h from the factory floor. Its acceleration figures are equally staggering.
| Metric | Target / Claimed Value |
|---|---|
| Top Speed (Target) | 110+ km/h (68+ mph) |
| 0–80 km/h (0-50 mph) | ~3.5 seconds |
| 0–100 km/h (0-62 mph) | ~5.2 seconds |
| Engine Power | 325 hp @ 8,200 rpm (est) |
| Fuel Capacity | 70 liters (18.5 gallons) |
The RXP-X 325 RS achieves its remarkable speed through a combination of increased power and reduced drag. Unlike the previous generation that required modifications to break the 107 km/h barrier, this model is designed to exceed 110 km/h in stock configuration, making it the undisputed king of the Extreme PWC class for 2026.
3. Marine Propulsion System
The heart of the RXP-X 325 RS is an evolution of the proven Rotax 1630 ACE platform, but with significant upgrades that extract an additional 25 horsepower compared to the RXP-X 300. The propulsion system has been comprehensively redesigned to handle the increased power and deliver it efficiently to the water.
| Propulsion Component | Specification |
|---|---|
| Engine Type | Rotax 1630 ACE RS (Racing Superiority) |
| Displacement | 1,630cc |
| Induction System | Supercharged with high-flow intercooler |
| Boost Pressure | 14 psi (increased from 12 psi) |
| Jet Pump | Sea-Doo ERIC RS with enlarged intake |
| Impeller | Stainless steel 4-blade race-spec |
| Cooling System | Closed-loop with high-capacity heat exchanger |
⚙️ TECH INSIGHT: Rotax 1630 ACE RS
The Rotax 1630 ACE RS engine represents the most advanced marine powerplant ever produced by BRP. Building on the 1,630cc platform, engineers increased supercharger boost from 12 to 14 psi through a larger compressor wheel and revised housing. The intercooler is 30% larger than the RXP-X 300 unit, reducing intake air temperature by an additional 15°C. The cylinder head features redesigned ports and higher-lift camshafts for improved breathing at high RPM. The closed-loop cooling system now includes a dedicated heat exchanger for the supercharger intercooler, preventing heat soak during sustained high-speed operation. These modifications combine to produce 325 horsepower—the highest output ever from a production PWC engine—while maintaining the reliability expected from a Rotax powerplant.
4. Hull & Hydrodynamic Design
The RXP-X 325 RS rides on an evolution of the T3-R hull, now designated T3-RS. This new configuration incorporates lessons learned from BRP's racing program and adds aerodynamic elements previously unseen on production watercraft.
- Hull Configuration: Deep-V RS with variable deadrise and integrated winglets
- Material: Polytec fiberglass with carbon fiber reinforcement
- Aerodynamic Package: Front winglets and rear spoiler for high-speed stability
- Running Surface: Optimized pressure-relief channels with race-spec strakes
- Weight (dry): 352 kg (776 lbs) – 2 kg lighter than RXP-X 300
The T3-RS hull represents the first time aerodynamic elements have been integrated into a production PWC design. The front winglets generate downforce at speed, pressing the bow into the water to reduce porpoising, while the rear spoiler manages airflow over the rider position to reduce drag. These features, combined with the refined running surface, allow the RXP-X 325 RS to maintain stability at speeds exceeding 110 km/h where previous watercraft would become uncontrollable.
5. High-Speed Stability & Control
At speeds above 110 km/h, control systems become critical for rider safety. The RXP-X 325 RS features an enhanced version of Sea-Doo's proven technologies, specifically calibrated for the higher performance envelope.
| Control System | Function |
|---|---|
| iBR RS (Intelligent Brake & Reverse) | High-speed braking with 180-foot stopping improvement |
| VTS RS (Variable Trim System) | High-speed trim adjustment with memory presets |
| ERICE RS | Electronically Regulated Intake Control with race mapping |
| Ride Plate | Race-spec extended with winglet integration |
| Ergonomics | Angled footwells, knee grips, and race seat with backrest |
The iBR RS system has been upgraded with a larger reverse bucket and stronger actuator, providing braking force that can stop the RXP-X 325 RS from 100 km/h in a distance 180 feet shorter than coasting. This represents a 20-foot improvement over the RXP-X 300, crucial for safety at the higher speeds this watercraft can achieve.
6. Marine Speed Classification
According to the Speedo Science Marine Velocity Index, the Sea-Doo RXP-X 325 RS establishes a new tier at the very top of the Extreme PWC class. Its 110+ km/h target top speed places it above all current production competitors, including the Yamaha GP1800R SVHO and Kawasaki Ultra 310LX.
| Class | Speed Range | Example Models |
|---|---|---|
| Hyper PWC | 110+ km/h | Sea-Doo RXP-X 325 RS (2026) |
| Extreme PWC | 100–110 km/h | Sea-Doo RXP-X 300, Yamaha GP1800R SVHO, Kawasaki Ultra 310LX |
| Performance | 80–100 km/h | Sea-Doo GTR 230, Yamaha FX SVHO, Kawasaki Ultra 310X |
7. Technical Specifications
| Specification | Data |
|---|---|
| Manufacturer | BRP (Bombardier Recreational Products) |
| Model Year | 2026 |
| Engine | Rotax 1630 ACE RS Supercharged, 1,630cc |
| Power Output | 325 hp @ 8,200 rpm (estimated) |
| Fuel System | Multi-point EFI with high-flow injectors |
| Jet Pump | C-Type RS with ERIC and race-spec stainless impeller |
| Top Speed (Target) | 110+ km/h (68+ mph) |
| Length | 3,320 mm (130.7 in) |
| Width | 1,230 mm (48.4 in) |
| Height | 1,130 mm (44.5 in) |
| Dry Weight | 352 kg (776 lbs) |
| Fuel Capacity | 70 L (18.5 gal) |
| Storage Capacity | 117 L (30.9 gal) |
| Price (MSRP est.) | $21,999 USD |
| Production Limit | 500 units worldwide |
8. Velocity Engineering Summary
The Sea-Doo RXP-X 325 RS represents a historic achievement in personal watercraft engineering. By extracting 325 horsepower from the Rotax 1630 ACE platform, integrating aerodynamic elements into the hull design, and refining every control system for the higher performance envelope, BRP has created the fastest production PWC ever offered to the public.
Its 110+ km/h target top speed creates a new Hyper PWC class in the Speedo Science Marine Velocity Index, placing it above all existing competitors. The RXP-X 325 RS isn't merely an incremental update—it's a paradigm shift that redefines what's possible from a factory watercraft. For the 500 riders fortunate enough to secure one, this machine offers a level of performance that was previously available only to professional racers with modified equipment. The RXP-X 325 RS is, quite simply, the new king of speed on water.
📌 RELATED MARINE PERFORMANCE ARTICLES
→ Sea-Doo RXP-X 300: 107 km/h Marine Engineering Analysis →
→ Yamaha GP1800R SVHO: 107 km/h Supercharged Analysis →
→ Kawasaki Ultra 310LX: 105 km/h Luxury Performance →
→ Marine Engineering Database →
→ Biological Speed in Marine Life →
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