Kawasaki Kx125
The Kawasaki Kx125 has a top speed of ~110 km/h (estimate — highly dependent on gearing and conditions), produces ~38 hp and weighs ~88 kg. Motoryk rates it 8/10.
De Kawasaki KX125 werd in 1974 geïntroduceerd als onderdeel van Kawasaki's speciale motorcrossserie en is daarmee een van de langstlopende 125cc-motorcrossmotoren in de geschiedenis. Tijdens de productie onderging hij talloze evoluties, waaronder vloeistofkoeling (geïntroduceerd in 1983), aluminium frames en progressieve verbeteringen van de vering, waardoor hij gedurende meerdere decennia concurrerend bleef. Na het modeljaar 2005 werd de motor stopgezet omdat de tweetaktmotorcrossklasse minder populair werd en een erfenis naliet als een van de meest iconische en succesvolle 125cc-motorcrossmachines die ooit zijn geproduceerd.
~38 hp
Kracht
~29 Nm
Koppel
~88 kg
Gewicht
~110 km/h (estimate — highly dependent on gearing and conditions)
Topsnelheid
~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption)
Brandstof
Naakt
Lichaam
Video Review
Wat kopers moeten weten
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.
Beoordeling van gebruikte kopers
"A brilliant buy if you inspect carefully and ride hard."
$1,500-$3,500 usedThe KX125 is one of the last great two-stroke motocrossers built before the class effectively died, and Kawasaki got the formula remarkably right by the early 2000s. The powerband is legitimately aggressive — it'll catch you out if you're not paying attention — but that's exactly what makes it addictive. Mid-2000s bikes especially hit a sweet spot with the chassis, offering genuinely sharp handling that still embarrasses plenty of modern machinery in tight, technical sections. Buying used, you need to be ruthless about maintenance history. These engines live and die by their top-end intervals, and a neglected piston can turn your bargain into an expensive rebuild overnight. Check the reeds, inspect the silencer packing, and pressure-test the crankcase seals before handing over a penny. A well-maintained example is a genuine joy; a neglected one is a money pit with a kickstarter.
Top 10 Accessories
Curated picks for the Kawasaki Kx125 — owned, ridden, recommended.
Veel voorkomende problemen
🔥 3 CRITICALPull head, inspect piston skirt, measure bore diameter
Remove side cover, manually actuate valve for smooth movement
Cycle through all gears, listen for clunking or false neutrals
Rock the rod side to side, feel for excessive wobble
✅Checklist vóór aankoop
High maintenance race bike, budget for rebuilds
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Kawasaki Kx125
Compare Kawasaki Kx125 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Kawasaki Kx125 vs Ktm Sx 125
Specs · Power · Buyer verdict
Kawasaki Kx125 vs Fantic Xmf 125
Specs · Power · Buyer verdict
Kawasaki Kx125 vs Suzuki Ts125r
Specs · Power · Buyer verdict
Kawasaki Kx125 vs Yamaha Wr125r
Specs · Power · Buyer verdict
Kawasaki Kx125 vs Aprilia Rx 125
Specs · Power · Buyer verdict
More Kawasaki Kx125 Guides
More from Kawasaki
View all Kawasaki models →Community Reviews
Discussion
Frequently Asked Questions
What are common problems with the Kawasaki Kx125? +
Top end wear, piston and rings: Pull head, inspect piston skirt, measure bore diameter (serious) | Power valve seized or carboned up: Remove side cover, manually actuate valve for smooth movement (moderate) | Transmission wear, hard shifting: Cycle through all gears, listen for clunking or false neutrals (serious)
Is the Kawasaki Kx125 a good motorcycle? +
A brilliant buy if you inspect carefully and ride hard. Rating: 8.0/10. Best for: Experienced motocross riders wanting lightweight two-stroke thrills. Avoid if: Beginners or anyone fearing two-stroke maintenance.
What is the horsepower of the Kawasaki Kx125? +
The Kawasaki Kx125 produces ~38 hp @ 11,500 rpm (2003–2005 final spec), with ~29 Nm @ 10,500 rpm (estimate for late-model spec) of torque. Top speed: ~110 km/h (estimate — highly dependent on gearing and conditions).
Is the Kawasaki Kx125 good for beginners? +
Not really — the Kawasaki Kx125 is better for experienced riders (381150020032005 hp can be intimidating). Experienced motocross riders wanting lightweight two-stroke thrills Avoid if: Beginners or anyone fearing two-stroke maintenance
Is the Kawasaki Kx125 reliable? +
Owners report 3 critical issues to watch for on the Kawasaki Kx125, notably: Top end wear, piston and rings (Pull head, inspect piston skirt, measure bore diameter). Buy with a pre-purchase inspection.
Is the Kawasaki Kx125 good for daily use? +
Experienced motocross riders wanting lightweight two-stroke thrills Fuel: ~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption).
