KX250 Motocross

Several motocross magazines hailed the 2005 Kawasaki KX™250 as one of the best all-around two-stroke motocross bikes due to its sheer power, ideal handling and superb brakes. As one magazine said, "The 2005 KX250 is phenomenal!"

And while it’s sometimes difficult to improve on a winner, Kawasaki has succeeded in making the KX250 even better for 2006 by fine tuning the engine, suspension and brakes.

To make this 250 Supercross race winner even quieter, the 249cc, liquid-cooled, two-stroke engine features a new piston profile, while a longer, wider silencer ensures the KX250 meets modern noise emission standards. Plus, the silencer’s all-new, long-fiber packing is more durable and requires less maintenance. And to keep the KX250 at the best-possible temperature, a new water pump impeller increases coolant circulation.

Changes to the KX250’s chassis include a strong, lightweight Renthal aluminum handlebar, and the rear shock now features dual compression adjustability so riders have more tuning options for both low-speed and high-speed compression damping. Up front, the Kayaba AOS fork has a new, one-piece sleeve to improve suspension action at full compression.

For 2006, the KX250 has even stronger stopping power. The new petal-style disc brakes are not only lighter, but their shape helps to clean the brake pads for more efficient braking performance.

The KX250 also features a new look for 2006, with aggressive new graphics and a new, two-tone seat.

Kawasaki offers optional parts for the KX250, including carburetor tuning parts, ignition rotors, a larger countershaft sprocket, aluminum and steel rear sprockets, solid brake discs for wet racing conditions and a 20-inch front wheel.

Those who race their KX250 at designated events are eligible to receive support from Team Green™, Kawasaki’s amateur racing support program. Each year, Team Green provides regional support vehicles and highly trained technicians at more than 100 events, offering technical information and assistance to those who race Kawasaki products. Kawasaki also offers a comprehensive contingency program for amateur and professional riders who place well at designated events.

Engine: Two-stroke single with KIPS®
Displacement: 249cc
Bore x stroke: 66.4 x 72.0mm
Cooling: Liquid
Carburetion: Keihin PWK38S with Power Jet
Induction: Piston reed valve
Compression ratio: 10.5 (low speed) – 9.1 (high speed):1
Ignition: Digital CDI
Transmission: Five-speed
Final drive: Chain
Frame: Perimeter style, high-tensile steel with aluminum subframe
Rake / trail: 26 degrees / 4.1 in.
Front suspension / wheel travel: 48mm inverted cartridge-type telescopic fork with 16-way compression and rebound damping / 11.8 in.
Rear suspension / wheel travel: UNI-TRAK® linkage system with 18-way low-speed compression and 2-turn high-speed compression damping, plus 16-way rebound damping and fully adjustable spring preload / 12.2 in.
Front tire: 80/100-21 51M
Rear tire: 110/90-19 62M
Front brake: Single semi-floating 250mm petal disc with dual-piston caliper
Rear brake: Single 240mm petal disc with single-piston caliper
Overall length: 86.0 in.
Overall width: 32.1 in.
Overall height: 49.8 in.
Ground clearance: 13.4 in.
Seat height: 38.0 in.
Dry weight: 213.9 lbs.
Wheel base: 58.3 in.
Fuel capacity: 2.2 gal.
Color: Kawasaki Lime Green / Black
* Price and specifications subject to change

Engine
- New piston profile helps to reduce mechanical noise
- Copper-plated steel washer improves cylinder head’s sealing performance
- KIPS® power valve O-ring offers improved sealing performance
- New reed valve stopper features new shape to improve low-rpm response – revised shape improves scavenging efficiency by facilitating airflow through the third scavenging port
- New water-pump impeller increases coolant circulation for improved high-rpm and over-rev performance
- Primary gear is now secured using a key and lock-nut to help reduce mechanical noise
- New kickstart lever has revised shape and mounting angle for improved durability
- New silencer is slightly wider and nearly two inches longer to ensure the KX™250 meets stricter noise emission standards
- New long-fiber silencer packing is more durable and requires less maintenance

Chassis
- Renthal aluminum handlebar is strong and lightweight
- Front and rear petal disc brakes help to reduce unsprung weight
- Petal-shaped discs help to clean the brake pads for more efficient braking performance
- Rear shock now features dual compression adjustability so riders have more tuning options for both low-speed and high-speed compression damping
- Fine-tuning to the Kayaba AOS (Air-Oil-Separate) fork via a new one-piece plastic sleeve inside the fork inner tubes improves suspension action at full compression

New Styling
- Aggressive Kawasaki Lime Green and black graphics are matched by a two-tone seat

Options
- Carburetor tuning parts
- Different inertia magneto rotors
- Larger countershaft sprocket
- 20-inch front wheel
- Solid brake discs for wet racing conditions
- Aluminum and steel rear sprockets
- Optional fork and shock springs
- Steel spoke nipples
- Front and rear wheel assemblies