- Fuel-injected 249cm3 liquid-cooled 4-stroke, single cylinder engine.
- New slim, ergonomic bodywork KX450 styling with long, smooth surfaces and flatter tank-seat line.
- Revised, KX450-based frame and KX450 Swingarm offer improved handling and increased rear wheel traction.
- KX450 Hyrdaulic Clutch offering more direct feel and light lever action for more consistent feeling.
- Updated Race Ready Suspension optimised for increased feedback on aggressive trails.
- Ease of use with Electric Start and lightweight compact Li-ion battery.
- Front 21″ and Rear 18″ wheels and enduro-type tyres are well suited to the cross country riding conditions.
- High performance KYB 48mm dia inverted coil-spring fork (with Kashima Coat) matched to a new KYB shock unit.
- Factory-style 28.6mm Renthal Aluminium Fatbar reduces vibration and shock transmitted to the rider.
FACTORY-STYLE ENGINE COMPONENTS AND TUNING
The powerful fuel-injected 249 cm3 liquid-cooled, 4-stroke Single from the KX250 features finger-follower valve actuation, dual injectors and downdraft-style intake to deliver hard-hitting performance complemented by a robust low-mid range. Engine maps optimised for the X scene deliver a broad spread of useable power and facilitate minute throttle control.
FINGER-FOLLOWER VALVE ACTUATION
Like the KX450 and KX250, the KX250X features a valve train designed by Kawasaki’s World Superbike engineers. Finger-follower valve actuation enables the use of large-diameter valves and aggressive cam profiles.
HIGH PERFORMANCE PISTON
High-performance piston, featuring the same design used on our factory racers, contributes to strong performance at all rpm. A short skirt, reinforced external ribs and the use of a bridged-box bottom, featuring internal bracing, contributes to a light, strong piston design. A dry film lubricant coating on the piston skirts reduces friction at low rpm and helps with the piston bedding-in process
Like the KX450, a hydraulic clutch offers direct feel and light lever action. Less play as the clutch heats up during heavy use results in more consistent feeling. The use of coned-disc springs contributes to lighter clutch actuation when the lever has been pulled in, and a wider clutch engagement range, which facilitates control (especially when half-clutching).
ELECTRIC START & BATTERY
Being able to restart an engine quickly during a race can mean the difference between keeping your lead, or having to fight your way back through the pack. Electric start makes restarting the engine as easy as pushing a button. Lightweight, compact
Li-ion battery helps keep weight to a minimum.
Well-balanced frame from the KX250 contributes to the KX250X’s light weight, light handling, and slim ergonomics. The slim aluminium perimeter frame is a lightweight construction composed of forged, extruded and cast parts. Overall rigidity balance was optimised to deliver both light handling and excellent traction.
EASY ENGINE TUNING: DFI SETTING DATA SELECTION (3 MAP CHOICES)
Adjusting engine settings to suit conditions has never been easier when using the KX’s FI couplers. Plug-and-play style system is quick, easy and stress-free. Instead of a single engine map, the ECU features three (four, counting the Launch Control Mode maps). Initial settings for the three maps are: Standard, Hard and Soft conditions. FI couplers, enables riders to easily switch between the three maps to suit riding conditions. Each of the three maps can be reprogrammed using the optional accessory – KX FI Calibration Kit
X WHEELS AND TYRES
While the KX250 features F21”/R19” aluminium rims, the KX250X uses a F21”/R18” combination that facilitates putting the KX250X’s power to the ground. Dunlop AT81 enduro-type tyres complement the X-specific wheels and are well-suited to the situations encountered in cross country riding.
CROSS COUNTRY EQUIPMENT
Sturdy skid plate helps to protect the underside of the engine, and facilitates sliding over obstacles encountered on the trail. Convenient side stand comes in handy when stopping away from the paddock area.
STRONG BRAKING PERFORMANCE
KX450 front master cylinder and petal disc brakes are among the KX250X’s numerous factory-style components. The stylish discs contribute to both sporty looks and a high-quality appearance.
Factory-style ø28.6 mm (1-1/8”) Renthal aluminium Fatbar, a popular aftermarket part, is now a standard feature. The thicker handlebar helps reduce vibration and shocks transmitted to the rider, while the new grip position (19 mm lower, 8 mm 10 closer) helps put the rider in a position that makes it easier to weight the front wheel.
KX FAMILY STYLING
Complementing the KX250X’s sleek bodywork, KX factory-style graphics ensure it is the sharpest looking bike in the paddock and further reflect the high potential of its KX-based performance. Coloured highlights on the suspension adjusters and engine oil cap and generator cover plugs contribute to a distinctive Kawasaki look while strengthening the KX family image.
PRECISION ENGINE TUNING
The optional accessory KX FI Calibration Kit features the handheld KX FI Calibration Controller, which enables riders to adjust engine characteristics (by rewriting actual data maps) to suit their preference. This convenient tool can be used without a PC, simply by plugging into the engine’s ECU.
THE HOLESHOT ADVANTAGE
The KX250X features a launch control system similar to that on our AMA factory motocross racers. With the simple press of a button, riders can activate a separate engine map designed to ensure efficient race starts in low-traction conditions. (The Launch Control Mode map retards ignition timing, allowing tyres to gain grip, and allowing riders to focus on their lines.)