Kawasaki Kx125
The Kawasaki KX125 was introduced in 1974 as part of Kawasaki's dedicated motocross lineup, making it one of the longest-running 125cc motocross bikes in history. Over its production run it underwent numerous evolutions including liquid cooling (introduced in 1983), aluminum frames, and progressive suspension improvements that kept it competitive through multiple decades. It was discontinued after the 2005 model year as the two-stroke motocross class declined in popularity, leaving behind a legacy as one of the most iconic and successful 125cc motocross machines ever produced.
~38 hp
Power
~29 Nm
Torque
~88 kg
Weight
~110 km/h (estimate — highly dependent on gearing and conditions)
Top Speed
~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption)
Fuel
Naked
Body
What Buyers Should Know
Top-End Wear Watch
The KX125 two-stroke engine requires frequent piston and ring replacements — typically every 20-40 hours of riding. Always ask sellers for maintenance records and inspect the top-end before buying.
Strong Resale Value
The KX125 holds its value well due to strong brand loyalty and a dedicated racing community. Well-maintained examples from the late 1990s–2005 era remain in high demand among motocross enthusiasts.
Legendary Power Delivery
The KX125 was widely praised for its aggressive, race-ready powerband that outperformed many competitors in its class. This makes it a favorite for experienced riders but challenging for beginners.
Full Specifications
Rivals & Alternatives
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