Honda Monkey Top Speed: What Riders Can Expect Today

The Honda Monkey 125’s top speed is about 60 mph (96 km/h) in stock form, with most real-world results falling between 56 and 62 mph depending on rider weight, wind, grade, and elevation. Older 50cc “Monkey” models were much slower, typically topping out around 30–40 mph, so figures here refer to the modern 125cc Monkey sold in recent years.

Real-World Performance vs. Published Specs

Honda does not publish an official top speed for the Monkey 125, so the most reliable picture comes from road tests and owner data. Across independent tests, a stock Monkey typically records GPS-verified top speeds around 59–61 mph, while the bike’s speedometer may show 2–4 mph higher due to common instrumentation optimism. On flat roads, lighter riders at lower elevations occasionally see 62 mph; heavier riders, hills, or headwinds can pull it down to the mid-50s.

Model-Year Differences Matter

The modern Monkey arrived for 2019 with a 125cc single-cylinder engine. The 2022 refresh introduced a 5-speed gearbox (replacing the 4-speed), subtly improving cruising and nudging real-world top speed a touch higher and more attainable. In broad strokes: 2019–2021 models tend to cluster around 56–60 mph; 2022 and newer models commonly hit 60–62 mph under favorable conditions, with similar results continuing for 2023–2025.

What Affects Top Speed

Several variables influence whether a Honda Monkey will reach the upper end of its speed range. The following factors are the most impactful and explain why reported top speeds vary rider to rider.

• Rider weight and posture: A lighter rider and a tucked position reduce drag and load.
• Elevation and weather: Higher altitude and headwinds lower power and raise drag.
• Road grade and surface: Even slight inclines can shave several mph off the top.
• Break-in and maintenance: A well-broken-in, properly serviced engine runs freer.
• Tires and pressure: Correct pressure and low-rolling-resistance rubber help maximize speed.
• Speedometer error: Indicated speed is often 2–4 mph optimistic versus GPS.
• Gearing and drivetrain losses: Sprocket changes can trade acceleration for top speed or vice versa.
• Fuel quality and temperature: Consistent, recommended-octane fuel and moderate temps aid performance.
• Aftermarket mods: Intake, exhaust, ECU tunes, and big-bore kits can raise top speed, though legality and reliability vary.

Taken together, these factors explain why two otherwise identical Monkeys can show different peak numbers on the same stretch of road—and why GPS data is the best yardstick.

How the Monkey Compares to Rivals

Within the mini-moto class, the Monkey’s top-end is competitive and broadly similar to its siblings and rivals. The Honda Grom (which shares much of the Monkey’s powertrain DNA) typically manages 59–62 mph. Kawasaki’s Z125 Pro is in the same ballpark. Honda’s Super Cub 125, with its semi-automatic transmission and similar output, also clusters around 60 mph. The differences tend to come down to gearing, rider position, and aerodynamics more than raw power.

Tips for Reaching Indicated Top Speed Safely

If you’re trying to see the upper limit on a stock Monkey, the following best practices can help you approach the bike’s real capability while keeping safety front and center.

1. Choose a safe, legal, flat stretch of road with good visibility and minimal traffic.
2. Use GPS for verification; don’t rely solely on the dash speedometer.
3. Check tire pressures, chain tension, and general maintenance before the run.
4. Wear proper protective gear and avoid extreme tucks that compromise control.
5. Make multiple passes in opposite directions to average out wind and grade.

Even with perfect setup, conditions may cap your speed slightly below the “best case.” Consistency, not a single lucky reading, is the better measure of performance.

Bottom Line

Expect a modern Honda Monkey 125 to top out around 60 mph in stock condition, with most riders seeing 56–62 mph depending on conditions and model year. The 2022-and-newer 5-speed models make it a bit easier to sit at or near that upper range, but the Monkey remains a city-first, fun-forward machine whose charm is about character and agility more than outright speed.

Which is better Honda Grom or Monkey bike?

Many people put dual sport tires on the Grom – making it a great choice for zooming around town and also going off road. Both have very similar ground clearance. If you’re ready to dig into curves and get around town fast, go Grom, if you’re going to spend more time off-road or at slower speeds, go Monkey.

Can a Honda Monkey go on the freeway?

The Honda Monkey Ticks All The Legal Boxes
Perhaps surprisingly, the answer is yes. 15 Best New Honda, Yamaha, Kawasaki Street Motorcycles For 2025-2026! Although its cruising speed will likely confine you to the slow lane on the highway, you can legally ride the Honda Monkey on U.S. roadways.

How many miles per gallon does a Honda Monkey get?

The 2025 Honda Monkey gets an impressive 167 MPG, while official Honda estimates show a figure of 162.6 MPG. Real-world figures often range from approximately 100 to over 190 MPG, depending on riding conditions, such as riding style, speed, and whether you’re using U.S. 10% ethanol fuel.
 
Factors Influencing MPG

• Riding Style: Aggressive or “open throttle” riding will result in lower MPG, while gentle, economical riding can achieve higher figures. 
• Fuel: The use of 10% ethanol fuel in the U.S. can impact fuel economy compared to non-ethanol fuels. 
• Rider Weight: Heavier riders may see slightly lower MPG. 
• Environmental Conditions: Factors like speed, elevation, and road conditions can influence fuel consumption. 

What to Expect

• High Economy: The Honda Monkey is known for its excellent fuel efficiency, making it a very economical choice for commuting and daily use. 
• Impressive Range: With a 1.5-gallon fuel tank, the Monkey can travel a significant distance on a single tank. 
• Achievable Figures: While some figures are higher, it’s realistic to expect to achieve over 100 MPG, with potentially much higher numbers under ideal conditions. 

Is the Honda Monkey Street legal?

Yes, the modern Honda Monkey is designed and sold as a street-legal mini-bike, meaning it meets the requirements to be ridden on U.S. roadways, including highways, though its lower cruising speed means it’s better suited for city streets and slow lanes on highways. You will still need to follow all state and local traffic laws, such as helmet requirements and registration, depending on your location.
 
Key Details

• Designed for Roads: . Opens in new tabThe Honda Monkey is built with features and a 125cc engine that make it road-worthy. 
• Not a Mini-Bike/Pocket Bike: . Opens in new tabThis is different from older versions of the Z50 or other small, non-street-legal pocket bikes, which are not permitted on public roads. 
• Legal in the U.S.: . Opens in new tabThe Honda Monkey is fully street-legal in all states. 
• Follow Local Laws: . Opens in new tabBe aware of and comply with all local traffic laws, including helmet laws, license requirements, and lane splitting rules that vary by state. 
• Best for City Riding: . Opens in new tabWhile technically street-legal, its cruising speed is more suitable for city streets and slower-moving traffic rather than sustained highway speeds.