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How much HP does a 125 2-stroke have?

Author

Daniel Moore

Published Jan 13, 2026

The YZ125 has a 124 cc (7.6 cu in) reed valve-inducted two-stroke engine. It was air cooled from 1974 to 1980, and liquid cooled since 1981. It has a Mikuni 38 mm TMX series carburetor. The engine produces 35 hp (26 kW).

How fast does a 125cc 2 stroke go?

As noted above, a 125cc bike can go as fast as 55 to 60 mph, but the specifics will depend on several factors. For instance, a two-stroke engine is faster than a four-stroke engine. The experience of the rider, environmental conditions, and upgrades on the motorcycle are also crucial factors that impact the speed.

How many HP is a 125cc dirt bike engine?

Most of the dirt bikes with the engine capacity of 125 cc have their horsepower ranging between 5.9 and 7.8 at a whopping 7500 revolutions in one minute (rpm). These bikes feature single cylinders with 4-stroke engines, the most modern type of engines one can think of.

How fast does a Suzuki 125 go?

So, How fast can a dirt bike go, A Suzuki 125cc? The company makes some of the fastest 125cc dirt bikes, headed by the Suzuki DR-Z125. DR-Z125, which happens to be a four-stroke 125cc dirt bike engine, can reach a top speed of 69mph. In contrast, the Suzuki RM-125 can hit 60mph on a perfect road.

How fast is 125cc?

Both 125cc scooters and motorbikes max out at 60mph, which is double the top speed of a 50cc. This makes them a much more suitable choice if you plan to do longer journeys, or are travelling on A roads. Whereas a 50cc makes a good choice for city riding, 125cc scooters are better for suburban/country riding.

32 related questions found

How many HP is 750CC?

For this example, the engine size is found to be 750CC's. Next, use the formula above to convert this value to horsepower. HP = CC/ 15 = 750 / 15 = 50 horsepower.

How powerful is a 125cc bike?

The average 125cc bike will likely have a top speed of around 70mph, and should be able to cruise along at 50 to 60mph quite comfortably. A second-hand 125cc bike can be picked up from a few hundred pounds, while a new high performance machine could set you back more than £4,000.

How fast can a 2 stroke engine go?

A two-stroke can reach speeds of 45 mph or more.

What age is a Honda 125 for?

The medium size wheels would be good for 9-11 year-old riders. And I think the big wheel CRF125 would be really good for kids 11 years-old or older.

How fast does 125cc quad go?

it can about 25 MPH. It does have a speed governor and you can govern the speed as low as 5 MPH.

What is the most powerful 125cc engine?

Most of the fastest 125cc motorbikes have a top speed of 70mph – very few exceed this speed. Yamaha MT-125.
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In my opinion and experience, the fastest 125cc bikes are:

  • Cagiva Mito 7speed, about 34HP, 170km/h.
  • Aprilia RS125, 33HP, ~170km/h.
  • Suzuki RG125, ~34HP, ~170km/h.
  • Yamaha TZR 125SP, ~170km/h.

Is 168 horsepower good?

Right between 200 and 300 is a good amount of horsepower for a car. Many base models from some brands offer between 100 and 200 horsepower, suitable for drivers who do not mind a more relaxed driving experience in exchange for a better economy.

How many cc's are in 1 horsepower?

cc or cu.cm metric conversions. Many people have asked for a relationship between horsepower and cc or how many cc in a hp. The short answer is about 14 to 17cc = 1 hp or about 1 cu.in. = 1 bhp for an ordinary, basic car.

Can you make a 125cc faster?

Upgrade your front, rear or both sprockets for increased power-band control. Motorcycles with 125cc engines lack top speed compared to larger displacement engines. Purchasing a front sprocket with less teeth than stock and a rear with more teeth than stock can help.

Can I ride a 125cc on a car licence?

As stated above, if you have a full car driving licence you can ride a motorcycle up to 125cc, but you need to have completed your CBT first. This is just a day long course that begins with basic motorbike training in a car park and then finishes with you riding the motorbike yourself out on the road.

What license do I need for a 125cc?

Yes, if you have a full car licence you can ride a 125cc scooter or motorbike off-road. However, you must take and pass your compulsory basic training (CBT) before riding on the road.

How many horsepower is 725cc?

Kohler 7000 Series KT725 725cc 22 Gross HP Electric Start Vertical Engine, 1" x 3.16" Crankshaft | Kohler Engines PA-KT725-3024.

How much HP is 200 cc?

There are approximately 13 horsepower in a 200cc engine. cc's are only accurate for measuring displacement rather than being for calculation.

How many cc is a 5 hp motor?

How Many Cc'S Is A 5 Horsepower Briggs & Stratton? In most Briggs and Stratton designs, it is necessary to run 175cc engines to reach a rated 5 cylinder power output.

Can a 17 year old ride a 125cc?

As a 17-year-old motorcyclist, you will be able to ride a bike with a maximum power of 125cc, whether you have a provisional or a full licence. This means that there is unlikely to be much difference between makes and models at this level when it comes to insurance costs.