The 2024 Kawasaki KX112 is one of the most talked about supermini motocross bikes right now, and there’s a reason for that. It sits in the gap between an 85cc mini bike and a full-size machine, giving a young racer something to grow into instead of something they’ll outgrow in a season.
If you searched for the 2024 Kawasaki KX112, you probably want real answers, not marketing copy. How fast does it go? What actually breaks on it? Is it worth the money over a used 125? We’ll walk through all of that here in plain language, using real specs, so you can decide if this is the right bike for your rider.
We sell dirt bikes at BMX Bike Zone every day, so we hear these same questions from parents constantly. Let’s go through what the KX112 actually offers.
What Is the 2024 Kawasaki KX112?
The KX112 is a supermini motocross bike for riders who’ve outgrown an 85cc but aren’t quite ready for a full-size 125cc or 250cc machine. It uses 85 big-wheel dimensions but runs a bigger, punchier 112cc two-stroke engine, the largest allowed in the supermini class.
 The 2024 Kawasaki KX112 is a race-ready supermini dirt bike with a 112cc two-stroke engine, a 6-speed transmission, and factory-style styling built to bridge the gap between mini bikes and full-size motocross machines.
Kawasaki built this bike around real race development. Strong low-end torque, a lightweight steel frame, and adjustable components mean a rider can keep this bike for a couple of seasons as they grow taller and stronger, rather than trading up every year.
Kawasaki KX112 Horsepower: How Much Power Does It Make?Â
Mirror the structure you already used for top speed state plainly that Kawasaki doesn’t publish an official HP figure for this race bike, then give the estimated range from dyno tests or credible enthusiast sources, with the same “here’s what actually affects the number” framing (jetting, altitude, tuning).
Quick Specs Table
| Spec | Detail |
|---|---|
| Engine | 112cc, single-cylinder, two-stroke, liquid-cooled |
| Transmission | 6-speed manual |
| Fuel System | 28mm Keihin carburetor |
| Weight | Approximately 169.7 lbs |
| Seat Height | 34.3 inches |
| Fuel Tank | 1.32 gallons |
| Tires | Dunlop MX33 |
| Brakes | Front and rear disc brakes |
| Frame | High-tensile steel, semi-double cradle |
| Suspension | Adjustable inverted cartridge forks |
If a rider is already past this bike and needs something bigger, our 2019 Kawasaki Dirt Bike (KX450) is a natural next step once they’ve outgrown supermini class racing.
How Fast Does a Kawasaki KX112 Go?
This is the question almost every parent types into Google before buying. Kawasaki doesn’t publish an official top speed for the KX112, since it’s a race bike meant for closed tracks, not a straight-line machine. Based on rider reports and dyno comparisons, the KX112 top speed lands somewhere around 55 to 80 mph, depending on gearing, track surface, rider weight, and tuning. Most riders never actually hit that top number on a real motocross track, since turns, jumps, and ruts keep speeds down.
KX 112 Top Speed Explained
A few things actually move that number up or down:
- Gearing-Â Shorter gearing means faster acceleration but a lower top end. Taller gearing swaps that trade the other way.
- Rider weight– A lighter rider will see a higher top speed than a heavier rider on the identical setup.
- Track conditions-Â Sand, mud, and hard-pack each change what the bike can actually deliver.
- Engine tuning-Â A clean power valve and correct jetting make a noticeable difference on the track.
Kawasaki tuned this engine for torque and a wide power spread rather than chasing a big top speed figure. That’s the right call for a young racer, since getting out of corners fast and staying in control over jumps matters a lot more than raw speed.
Key Benefits of the 2024 Kawasaki KX112
Here’s what actually sets this bike apart in the supermini class:
- Class-leading 112cc engine for the strongest power in its category
- 6-speed transmission for smoother, more precise gear changes
- Dunlop MX33 tires for solid grip in corners and rough terrain
- Adjustable ERGO-FIT components, including six handlebar positions, so the bike can grow with the rider
- Front and rear petal disc brakes for consistent stopping power
- Factory-inspired styling that mirrors Kawasaki’s race team look
These features come together to give riders stepping up from an 85cc bike real confidence, without throwing them straight onto a full 125cc two-stroke or 250cc four-stroke before they’re ready.
Step-by-Step: Is the 2024 Kawasaki KX112 Right for Your Rider?
Run through these steps before buying.
- Check height and inseam. Seat height sits at 34.3 inches, so the rider should be able to touch the ground comfortably with both feet.
- Confirm riding experience. This bike fits riders who already handle an 85cc mini bike well and are ready for more power and a taller platform.
- Think about racing goals. If the rider plans to compete in supermini or amateur motocross classes, this bike fits those class rules exactly.
- Test the clutch and shifting. A 6-speed manual clutch demands more coordination than an automatic bike, so make sure they’re comfortable with manual shifting first.
- Plan for maintenance. Two-stroke engines need regular top-end rebuilds, so build that cost into your budget from the start.
Common Problems With the KX112
No bike is flawless, and the KX112 isn’t an exception. Knowing what tends to go wrong ahead of time saves you from bigger repair bills down the road. the Cycle World’s KX112Â guide for independent review commentary
The most common problems with the KX112 are carburetor jetting issues, normal top-end wear from two-stroke use, chain and sprocket stretching, and clutch wear from hard riding. Most of these are routine maintenance items rather than actual design flaws.
Common Issues Table
| Problem | Cause | Fix |
|---|---|---|
| Hard starting or bogging | Incorrect carburetor jetting for altitude or climate | Re-jet the 28mm Keihin carb for local conditions |
| Fast top-end wear | Normal two-stroke wear, especially under hard riding | Rebuild the top end on schedule, use quality two-stroke oil |
| Chain stretching | Heavy use on rough tracks | Check and adjust chain tension regularly |
| Clutch slipping | Aggressive launches and hard riding | Replace clutch plates as part of routine maintenance |
| Fouled spark plug | Wrong oil mix ratio or excess idling | Use the correct fuel-to-oil ratio and recommended plug |
Mistakes to Avoid
- Skipping the break-in procedure on a brand new engine
- Running the wrong fuel-to-oil mix ratio
- Ignoring chain tension and lubrication
- Letting the air filter get dirty before track days
- Buying a bike that’s too tall or too short for the rider right now
Tips and Best Practices for Owning a KX112
A little routine care keeps this bike race-ready season after season.
- Mix the two-stroke oil at the ratio Kawasaki recommends, don’t guess
- Clean and oil the air filter after every ride, especially on dusty tracks
- Check suspension seals for leaks before and after race weekends
- Keep the chain tensioned and lubricated to avoid early wear
- Store the bike with fuel stabilizer if it’ll sit unused for more than a month
Stick to this and the KX112 top speed and power delivery will stay consistent all season, instead of dropping off halfway through.
2024 Kawasaki KX112 vs. Competitors
| Bike | Engine | Transmission | Approx. Price |
|---|---|---|---|
| 2024 Kawasaki KX112 | 112cc two-stroke | 6-speed | Around $5,099 |
| Yamaha YZ125 | 125cc two-stroke | 6-speed | Higher price point |
| KTM 125 SX | 125cc two-stroke | 6-speed | Mid-to-high price point |
| Honda CRF150R | 149cc four-stroke | 5-speed | Comparable price point |
The KX112 usually comes in as the most affordable option in this group, which makes it a strong pick for families who want supermini performance without the top-tier price tag. If you’re weighing it against other brands, our 2024 KTM Dirt Bike and 2024 Honda Dirt Bike listings are both in stock and worth comparing side by side.
Frequently Asked Questions
Is the KX112 a good bike?
Yes. The 2024 Kawasaki KX112 is a well-built supermini racer with a class-leading 112cc engine, a durable steel frame, and race-proven parts like Dunlop MX33 tires. It gives riders a real step up from 85cc bikes while staying manageable for intermediate racers.
How many gears does the KX112 have?
The KX112 runs a 6-speed manual transmission paired with a multi-disc manual clutch, giving riders precise control over how power gets to the ground.
What is the fuel consumption of the KX112?
Kawasaki doesn’t publish an official MPG figure for the KX112 since it’s a race bike, not a street bike. With a 1.32-gallon tank, most riders get through one to two full motos before needing to refuel, depending on riding style and track length.
How heavy is a KX112?
The 2024 Kawasaki KX112 weighs approximately 169.7 lbs, light enough for younger riders to muscle around while still feeling planted on the track.
is the Kawasaki KX112 the same as the KLX112
No, different bike, different engine type and purpose, briefly explain the distinction. Two or three sentences is enough.
How fast does a Kawasaki KX112 go?
Real-world estimates put the KX112 top speed around 55 to 80 mph depending on gearing and conditions, though most riders won’t reach that top number on an actual motocross track because of turns and obstacles.
What are the common problems with the KX112?
The most reported issues are carburetor jetting problems, normal two-stroke top-end wear, chain stretching, and clutch wear, all typical maintenance items for a two-stroke race bike rather than design defects.
Conclusion
The 2024 Kawasaki KX112 is a serious supermini built for riders who are ready to move past an 85cc mini bike. Between the 112cc two-stroke engine, the 6-speed transmission, and the factory-inspired build, it delivers real racing performance while staying manageable for a growing rider. The KX112 top speed, usually somewhere in the 55 to 80 mph range depending on setup, backs up strong acceleration and torque rather than a big straight-line number, which is exactly what a motocross track calls for.
Knowing the common problems ahead of time, mainly carburetor jetting and normal two-stroke wear, means you can keep this bike race-ready with simple, routine maintenance instead of getting surprised by repair bills.
If you’re ready to get your rider on a bike built for real competition, we’ve got dirt bikes in stock and ready to ship. Browse our current lineup on the shop page, check out other rider reviews and buying guides on our blog, or reach out through our contact page and we’ll help you find the right bike, in stock, with fast shipping.
