Kawasaki Kx 250
The Kawasaki Kx 250 has a top speed of Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed), produces Approximately 40–42 hp and weighs 110 kg. Motoryk rates it 8.2/10.
The Kawasaki KX250 was introduced in 1974 as a dedicated motocross racing machine, evolving through decades of competitive development to become one of the most respected 250cc motocross bikes in the world. It underwent significant transformations over the years, transitioning from a 2-stroke engine (which dominated its heritage) to a 4-stroke fuel-injected engine in 2020, keeping pace with modern emissions and performance standards. The KX250 has been a staple on the motocross circuit, known for its aggressive power delivery and race-bred chassis, making it a favorite among amateur and professional riders alike.
Approximately 40–42 hp
Power
Approximately 28–30 Nm
Torque
110 kg
Weight
Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed)
Top Speed
Estimated 6–8 L/100km (note: varies greatly depending on riding intensity; off-road/motocross use makes precise figures difficult to standardize)
Fuel
Naked
Body
Video Review
What Buyers Should Know
Top End Wear Alert
The KX250 two-stroke requires piston and ring replacement every 30-40 hours of hard riding. Always ask the seller for maintenance records and inspect the top end before buying.
Strong Resale Value
The KX250 holds its value exceptionally well in the used dirt bike market due to its proven race pedigree and loyal fan base. A well-maintained example can retain 70-80% of its value over several years.
Aggressive Power Delivery
The KX250 is known for its snappy, aggressive powerband that favors experienced riders over beginners. This raw performance is a major selling point for racers but can be a handful on tight trails.
Used Buyer Review
"Buy it right and you'll grin every single lap."
$2,500-$5,500 usedThe KX250 is a serious race bike wearing trail clothes, and that's exactly what makes buying one used complicated. Kawasaki's two-stroke delivers savage, peaky power that'll punish anyone who isn't fully committed — this thing hits hard mid-range and doesn't apologize for it. Engine condition is everything here. Pull the pipe and inspect the power valve before handing over cash. If the previous owner raced it hard and skipped rebuilds, you're buying someone else's expensive problem. That said, a well-maintained example is genuinely special. The chassis is razor-sharp, the suspension components are quality stuff that takes tuning well, and parts availability remains solid. Check the swingarm bearings, linkage bearings, and reed cage — these are the spots where deferred maintenance hides. A compression test is non-negotiable. Low numbers mean a top-end job minimum, and potentially worse.
Top 10 Accessories
Curated picks for the Kawasaki Kx 250 — owned, ridden, recommended.
Common Problems
🔥 2 CRITICALPull plug, check compression, listen for rattle
Inspect reeds for cracks or bent petals
Remove cover, check valve moves freely, no carbon
Feel for notchy shifting, listen for grinding noise
✅Pre-Purchase Checklist
Reliable if maintained, punishing if neglected
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Kawasaki Kx 250
Ktm Sx-f 350
Ktm Sx 250
Yamaha Yz250f
Suzuki Rm-z250
Gas Gas Ex 350f
Compare Kawasaki Kx 250 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Kawasaki Kx 250 vs Ktm Sx-f 350
Specs · Power · Buyer verdict
Kawasaki Kx 250 vs Ktm Sx 250
Specs · Power · Buyer verdict
Kawasaki Kx 250 vs Yamaha Yz250f
Specs · Power · Buyer verdict
Kawasaki Kx 250 vs Suzuki Rm-z250
Specs · Power · Buyer verdict
Kawasaki Kx 250 vs Gas Gas Ex 350f
Specs · Power · Buyer verdict
More Kawasaki Kx 250 Guides
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Discussion
Frequently Asked Questions
What are common problems with the Kawasaki Kx 250? +
Top end wear, piston and rings: Pull plug, check compression, listen for rattle (serious) | Reed valve deterioration reduces power: Inspect reeds for cracks or bent petals (moderate) | Power valve carbon buildup: Remove cover, check valve moves freely, no carbon (moderate)
Is the Kawasaki Kx 250 a good motorcycle? +
Buy it right and you'll grin every single lap. Rating: 8.2/10. Best for: Experienced motocross riders wanting competitive two-stroke performance. Avoid if: You're new to dirt bikes or motocross.
What is the horsepower of the Kawasaki Kx 250? +
The Kawasaki Kx 250 produces Approximately 40–42 hp @ 13,000 rpm (2020+ 4-stroke model; earlier 2-stroke models varied), with Approximately 28–30 Nm @ 10,500 rpm (2020+ 4-stroke model; estimate) of torque. Top speed: Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed).
Is the Kawasaki Kx 250 good for beginners? +
Yes — the Kawasaki Kx 250 is a reasonable choice for new riders (40 hp is manageable), weighing 110 kg. Experienced motocross riders wanting competitive two-stroke performance
Is the Kawasaki Kx 250 reliable? +
Owners report 2 critical issues to watch for on the Kawasaki Kx 250, notably: Top end wear, piston and rings (Pull plug, check compression, listen for rattle). Buy with a pre-purchase inspection.
Is the Kawasaki Kx 250 good for daily use? +
Experienced motocross riders wanting competitive two-stroke performance Fuel: Estimated 6–8 L/100km (note: varies greatly depending on riding intensity; off-road/motocross use makes precise figures difficult to standardize).
How fast is the Kawasaki Kx 250? +
The Kawasaki Kx 250 reaches a top speed of Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed), producing 40 hp at 110 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Kawasaki Kx 250? +
Motoryk has curated a Top 10 gear list specifically for the Kawasaki Kx 250, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/kawasaki/kx-250/top10. Each pick is matched to this bike's spec.
