Off-Road.coms Ride-Net 2002 Kawasaki Dirt Bikes — KX 250:

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Kawasaki KX 250’s Ride-Net! 2002 Dirt Bikes — KX 250

A new exhaust powervalve replaces the old butterfly unit, and valve was increased. The exhaust pipe was with thicker O-rings, as as a longer retention spring and a where the pipe mounts.

significant modification to the engine is the twin-spark ignition features twin sparks through the and a new 16-bit processor for improved power.

For added engine the connecting rod was given a smoother Also, an oil groove at the big end of the con-rod was there’s increased crowning to the bearings ad the edges of the side so oil flows more freely. The of the main bearings were as was the kickstart shaft.

A tooth was added to the primary and left and right crank were modified to maintain between the connecting rod and cases. is delivered to the rear wheel via a five-speed transmission whose through fifth gear were revised for better and power delivery. Also, tooth valleys were for increased contact area.

A high-tensile steel perimeter with new solid-mounted footpegs the KX250. Up front, the fully fork was increased in diameter, tube thickness was decreased. The is increased rigidity with weight.

Rear suspension is by Kawasaki’s UNI-TRAK® linkage that progressively increases and spring rates on the fully rear shock as the suspension is For ’02, the system was revised longer pull rods and new dimensions for a new linkage ratio improves performance, especially bottoming.


Liquid-Cooled Engine Kawasaki Integrated Power System

Reshaped porting for power throughout the rev range and over-rev power

New two-piece with increased valve and new spring and lever shape for sealing and increased mid-range

Piston skirt lengthened for exhaust-port sealing Keihin Jet PWK38S

Carburetor with

Shorty design places the jet and slide close to the cylinder for throttle response

Kawasaki Responsive Ignition Control uses a sensor to alter timing according to throttle and engine speed for better response and more power

Power Jet system uses an solenoid to close a fuel according to rpm and throttle position for jetting and increased top-end at over-rev

Exhaust System

are thicker, retention spring is and a plate was added to the exhaust mount for better sealing


Second through gear ratios changed for and smoother power delivery

tooth valleys changed rounded to squared for increased


Primary gear was to complement new transmission gear

Connecting Rod

Redesigned to allow more oil the big-end bearing for improved

Features connecting rod with a finish for unimpeded oil flow

Twin Spark Ignition

Produces two overlapping sparks for intervals at lower rpm for improved and torque from ultra-low rpm the mid-range

New iridium sparkplug spark energy to enhance and over-rev

New 16-bit processor new system and modified ignition

Rotor incorporates vent to improve cooling

UNI-TRAK® Suspension

Cast-aluminum section of the is designed for less unsprung and more rigidity

The shock both low- and high-speed adjustments

48mm Upside-Down Fork

Kawasaki KX 250

Inner fork diameter increased for more

Tube thickness decreased for loss

Front and Rear Brakes

Front brake twin pistons made aluminum to reduce weight

brake master cylinder new push rod for improved pedal

High Tensile Steel Frame.

Features new footpegs to mud build-up.

Removable aluminum sub-frame for easy access to the shock


New graphics

seat to increase airflow airbox

Flatter fuel incorporates new square inset where the shrouds and seat mount for security

Revised covers complement new seat and

New handlebar bend is 10mm and 10mm straighter

New chain and chain roller bearing to reduce weight and durability

Optional 20-inch rim or assemblies available

Aluminum cable adjuster replaces old unit to reduce weight

Kawasaki KX 250
Kawasaki KX 250

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