![2007-2008 Kawasaki Ultra 250X Review and Specs [Video]](https://www.jetdrift.com/wp-content/uploads/2022/12/review-and-specs-1.jpg)
2007-2008 Kawasaki Ultra 250X Review and Specs [Video]
The Kawasaki Ultra 250X was the first supercharged Kawasaki Jet Ski, and was manufactured from 2007 through 2008. It shared its deep-V platform with the Ultra LX but utilized a more powerful 250 HP supercharged engine. In 2009 it was replaced by the more advanced Ultra 260X.
If you want to find out more about this ski, this post is for you.
We at JetDrift have compiled all you need to know into this Kawasaki Ultra 250X review!
2007-2008 Kawasaki Ultra 250X Review
Kawasaki Ultra 250X Hull and Top Deck
The Kawasaki Ultra 250X was released in late 2006 as Kawasaki’s first supercharged Jet Ski.
According to PersonalWaterCraft, the all-new hull of this ski was derived from a championship-winning design engineered by Kawasaki race teams.
This 22.5-degree deadrise platform measured 132.7 inches in length, 47 inches in width, and 45.3 inches in height.
Compared to its rivals or the predecessor STX Kawasaki jet ski, this Ultra 250X was longer and much heavier. The dry weight of the ski was no less than 904 pounds.
Its large top deck offered the best capacities in the industry, including a 20.6-gallon gas tank, a 53-gallon front storage bin, a glovebox, and an under-seat storage case.
Unlike its successors, the Ultra 250X featured a fairly smooth 3-rider seat that lacked any bolsters.
Over the years, this amazing shell was carried over to many great models, including the Ultra 260/300/310 series and the non-supercharged Ultra LX.
Kawasaki Ultra 250X Engine and Propulsion
The power source is the Ultra 250X was the first supercharged Kawasaki jet ski engine in history. This 4-stroke, 1498cc, DOHC, 4-valve, inline 4-cylinder supercharged Kawasaki marine engine was rated at 250 HP.
It was derived from the ZX-R 14 Ninja motorcycle series but was redesigned for marine use. It enjoyed many innovative features including a semi-dry-sump lubrication system, digital fuel injection, open-loop cooling, electric start, and a direct drive system.But unlike its naturally-aspirated predecessor, the Ultra 250X was equipped with a constant-displacement, Eaton TVS supercharger.
Engine power was delivered to an industry-standard, axial-flow, single-stage jet pump, housing a stainless steel, 3-blade, oval-edge impeller.
This advanced propulsion system offered an incredible 1,524 pounds of thrust!
This proven 4-cylinder supercharged Kawasaki marine engine underwent many power upgrades over the years, including:
- 2007: 250 HP
- 2009: 260 HP
- 2011: 300 HP
- 2014: 310 HP
Kawasaki Ultra 250X Features
The standard features of the Kawasaki Ultra 250X were as follows:
- Multifunction gauge
- Kawasaki Smart Steering system (KSS)
- Smart Learning Operation (SLO) mode
- Mechanical reverse
- 20.6-gallon fuel tank
- Front storage compartment
- Glovebox
- Under-seat storage case
- Tool kit (stored in the back of the rear seat)
- 3-rider seat
- Variable trim system
- Mooring cleats
- Tow hook
- Reboarding step
- Rear grab handle
- Sponsons
- Deck mat
Unfortunately, this assembly offered less safety and comfort than its more modern electric-controlled brothers.
On top of that, it wasn’t intended to be used as a brake, so the 250X could only be slowed down by its water drag.
Kawasaki Ultra 250X Performance Handling
Thanks to its 22.5-degree, deep-V hull design, the 250X ensured good straight-line tracking and great high-speed performance.
Its deep keel combined with its heavy weight offered an outstanding rough water performance. So, it was no surprise that this model instantly became popular among endurance racers.
The top speed of the Ultra 250X was about 65-66 mph and it could do the 0-30 sprint in less than two seconds.
On the other hand, the ski wasn’t great for buoy racing since it required a lot of body positioning in tight turns. The turning radius of the ski was 13.1 feet and wasn’t as precise in the corners as competitor models.
The claimed fuel economy of the Kawasaki Ultra 250X was 19.7 GPH at full throttle. This translated to a cruising range of 65.3 miles or a playtime of 59 minutes.
Due to its large swim platform and stable hull, the 250X could be used for a lot of water activities like tow sports, fishing, and even touring.
Novice riders appreciated the moderate performance of the Smart Learning Operation (SLO) key and the innovative Kawasaki Smart Steering (KSS) system.
After only two short years of production, the Kawasaki 250X was discontinued in 2008 to make room for the more advanced 260X.
Kawasaki Ultra 250X Specs Chart
For your convenience, we’ve compiled the key specs of the 2007 Kawasaki Ultra 250X into these charts:Kawasaki Ultra 250X Engine Specs
| Kawasaki Ultra 250X | Engine Specs |
|---|---|
| Type | 4-stroke, 4-cylinder, water cooled |
| Displacement | 1 498 cm³ (91.4 cu in.) |
| Bore and Stroke | 83 × 69.2 mm (3.27 × 2.72 in.) |
| Compression Ratio | 7.8 : 1 |
| Ignition System | Digital transistor |
| Lubrication System | Semi-dry sump |
| Fuel System | Digital fuel injection |
| Starting System | Electric starter |
| Battery | 12 V 18 Ah |
Kawasaki Ultra 250X Tuning Specifications
| Kawasaki Ultra 250X | Tuning Specifications |
|---|---|
| Spark Plug Type | NGK PMR9B |
| Spark Plug Gap | 0.6 ∼ 0.7 mm (0.024 ∼ 0.028 in.) |
| Spark Plug Terminal | Solid post terminal |
| Ignition Timing | 0° ATDC @1 300 r/min ∼ 8° BTDC @3 000 r/min (rpm) |
| Idle Speed - in water | 1 300 ±100 r/min (rpm) |
| Idle Speed - out of water | 1 300 ±100 r/min (rpm) |
Kawasaki Ultra 250X Drive System
Kawasaki Ultra 250X Drive System Coupling Direct drive from engine Jet Pump Type Axial flow, single stage Jet Pump Thrust 6 780 N (692 kgf, 1524 lb) Steering Steerable nozzle Braking Water drag
Kawasaki Ultra 250X Performance
Kawasaki Ultra 250X Performance Minimum Turning Radius 4.0 m (13.1 ft) Fuel Consumption 74.5 L/h (19.7 US gal/h) @full throttle Cruising Range (1) 105 km (65.3 mi) @full throttle Cruising Range (2) 59 minutes
Kawasaki Ultra 250X Dimensions and Capacities
| Kawasaki Ultra 250X | Dimensions and Capacities |
|---|---|
| Overall Length | 3 370 mm (132.7 in.) |
| Overall Width | 1 195 mm (47.0 in.) |
| Overall Height | 1 150 mm (45.3 in.) |
| Dry Weight | 410 kg (904.1 lb) |
| Fuel Tank Capacity | 78 L (20.6 US gal) |
| Number of passenger (driver incl.) | 3 persons (1 operator and 2 passengers) |
| Load limit | 225 kg (496 lb) |
Kawasaki Ultra 250X Engine Oil
Kawasaki Ultra 250X Engine Oil Type API SF, SG, SH, SJ or SL with JASO MA Viscosity SAE 10W-40 Oil Capacity 5.0 L (5.3 US qt)
These charts are for informational purposes only! For exact specifications, please refer to the factory manual.
Takeaways
As a takeaway, we’ve answered the most common questions about the 2007-2008 Kawasaki Ultra 250X!What is a Kawasaki Ultra 250X?
The Ultra 250X was the first supercharged Kawasaki Jet Ski.
When did the Ultra 250X Come Out?
The Kawasaki Ultra 250X debuted for the 2007 model year.
What Years Did Kawasaki Make the Ultra 250X?
Kawasaki marketed the Ultra 250X from 2007 through 2008.
What Size was a Kawasaki Ultra 250X?
The Kawasaki Ultra 250X measured 132.7 inches in length, 47 inches in width, and 45.3 inches in height, while its maximum draft was 14.6 inches.
How Much Did a Kawasaki Ultra 250X Weigh?
The dry weight of the Kawasaki Ultra 250X was 904.1 pounds.
What Size Storage Compartment Did the Ultra 250X Have?
The total storage capacity of the Ultra 250X was 56 gallons, split into a 53-gallon front storage, a glovebox, and a storage case under the rear seat.
How Many People Could Ride on a Kawasaki Ultra 250X?
The Kawasaki Ultra 250X could carry 3 adult riders.
What Kind of Engine was in the Kawasaki Ultra 250X?
The Kawasaki Ultra 250X was powered by a 4-stroke, 1498cc, DOHC, fuel-injected, 4-cylinder Kawasaki engine.
Was the Kawasaki Ultra 250X Supercharged?
The Kawasaki Ultra 250X was powered by a supercharged and intercooled power mill.
Was the Kawasaki Ultra 250X a 4-stroke?
Yes, the Kawasaki Ultra 250X was powered by a 4-stroke engine.
How Much Horsepower Did a Kawasaki Ultra 250X Have?
The Kawasaki Ultra 250X produced a 250 HP out of the box.
What Kind of Oil Did a Kawasaki Ultra 250X Use?
According to the owner’s manual, the Kawasaki Ultra 250X used SAE10W-40 engine oil (API SF or SG, SH, SJ, or SL with JASO MA).
How Much Oil Did a Kawasaki Ultra 250X Hold?
The oil capacity of the Kawasaki Ultra 250X was 5.3 US quarts (5.0 L).
How Much Fuel Did a Kawasaki Ultra 250X Hold?
The Kawasaki Ultra 250X was equipped with a 20.6-gallon fuel tank.
How Much Fuel Did a Kawasaki Ultra 250X Use?
The fuel consumption of the Kawasaki Ultra 250X was about 19.7 GPH at WOT.
What was the Fuel Range of the Kawasaki Ultra 250X?
The claimed fuel range of the Ultra 250X was about 65.3 miles at full throttle, which equals 59 minutes of riding time.
How Fast Did a Kawasaki Ultra 250X Go?
The top speed of a Kawasaki Ultra 250X was limited to 65-66 mph.
Did the Kawasaki Ultra 250X Have a Reverse?
Yes, the Kawasaki Ultra 250X came with a mechanical reverse.
Did the Kawasaki Ultra 250X Have a Brake?
No, the Kawasaki Ultra 250X was manufactured without a brake system.
Did the Kawasaki Ultra 250X Have Speakers?
The Kawasaki Ultra 250X was marketed without speakers.
Could the Kawasaki Ultra 250X Tow a Skier or a Wakeboarder?
Yes, the Kawasaki Ultra 250X could tow a wakeboarder or a tuber.
How Much Does a Kawasaki Ultra 250X Cost?
The asking price of used Kawasaki Ultra 250Xs varies between $3,000 and $10,000 depending on the year and its condition.
