The Kawasaki KMX is a lightweight dual-purpose trail motorcycle produced by Kawasaki from the mid-1980s to the early 2000s. It features a liquid-cooled two-stroke single-cylinder engine, front and rear disc brakes, Kawasaki's Uni-Trak monoshock rear suspension, and the KIPS (Kawasaki Integrated Power-valve System) for improved power delivery across the rev range.
Two main variants were produced: the more common KMX 125 (exported widely, including to Europe and the UK) and the rarer KMX 200 (primarily in select markets like the UK, with greater low-end torque).
The KMX 125 was popular as an affordable, versatile on- and off-road bike, especially among learners in restricted form (typically limited to around 12âÂÂ13 bhp for compliance with A1/provisional licenses in markets like the UK). Restrictions were commonly achieved via a washer in the exhaust or carburetor/jetting changes and were straightforward to remove for full performance.
In derestricted form, it offered lively two-stroke performance with a strong mid-to-top-end powerband thanks to KIPS, lightweight handling, and good trail capability. It competed with models like the Yamaha DT125R.
Common reliability notes include the need for regular top-end maintenance (typical of two-strokes), cleaning of the power valve, and proper premix oil use, but many examples have proven durable with basic care.
A higher-capacity version with a 191 cc engine, producing around 25âÂÂ30 bhp (derestricted) and significantly more low-end torque for better trail usability. While it shared the 125 modelâÂÂs frame it incorporated upgraded forks, yokes, and rear swingarm exclusive to the 200, along with a 17-inch rear wheel.
The KMX 200 shared the same chassis and features but felt punchier due to the extra displacement, though it had a shorter production life and is less common.