Best 125 2 Stroke Dirt Bike (2025 Update)
For motocross enthusiasts looking to upgrade to a more powerful bike, 125cc two-stroke dirt bikes can provide an excellent combination of maneuverability, lightweight design, and potent acceleration. When searching for the best 125 2 stroke dirt bike to meet your needs, there are several key factors to take into account.
First, consider the bike’s power-to-weight ratio. A 125cc two-stroke engine in a lightweight chassis can offer snappy throttle response and a broad powerband to blast out of corners or clear jumps with ease. However, too much power can also make the bike more difficult to control for less experienced riders.
Handling and suspension are also critical. The ideal 125cc dirt bike will be agile enough to whip through tight turns and stable at speed. Plush, adjustable suspension that soaks up jumps and bumps without bottoming out allows you to push harder through rough sections. Carefully evaluate the ergonomics as well to ensure the bike’s size and dimensions suit your height and riding style.
When you’re ready to upgrade your dirt bike, which 125cc two-stroke model is right for you? Do you prioritize lightning-fast acceleration and a wide powerband? How important is a forgiving, confidence-inspiring chassis? Is adjustability and tuning potential a must-have? Taking the time to reflect on your riding skills, preferences, and needs will ensure you select a 125cc racer that takes your motocross abilities to the next level.
10 Best 125 2 Stroke Dirt Bike
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The product is ideal for efficient mowing of residential lawns and small landscapes at an affordable price.
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Ideal for off-road adventures with its 125cc engine, 17 inch wheels, and durable build.
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The product is ideal for youth dirt biking and features a semi-automatic transmission and large tires for optimal performance.
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The product is ideal for kids who want to ride a dirt bike with semi-automatic transmission and big tires.
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The product is ideal for powering dirt pit bikes like Honda CRF50, CRF70, XR50, and XR70 with its air-cooled 4-stroke single cylinder motor.
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The product is ideal for off-road dirt biking for adults with its big wheels and powerful 125cc engine.
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The product is ideal for adults looking for an affordable and powerful dirt bike to ride off-road.
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Ideal for efficiently mowing large, flat lawns with minimal obstacles or tight spaces.
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Ideal for powering small off-road vehicles such as dirt bikes, ATVs, and quads with a manual clutch.
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Ideal for residential or commercial use on large lawns or properties requiring quick and efficient mowing.
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1. X-Pro Cruise 125 125cc
The XPROUSA 125cc Dirt Bike is a top-of-the-line option for those seeking a high-quality ride. The bike comes equipped with a Zongshen brand engine, known for its premium quality, stability, impressive power, and longer lifespan. This engine is a pricier option, but it is well worth the investment.
With a 14" front and 12" rear fat tire, this dirt bike is both higher and longer, making it ideal for adults and big boys alike. The tires are designed to provide excellent traction and durability, ensuring a smooth and comfortable ride.
Please note that some assembly is required for this dirt bike. The assembly process includes the handlebar brackets, wheels, brakes, number plate, and fender. The exact assembly requirements may vary depending on the model chosen, but the process is straightforward and easy to follow.
2. X-Pro Youth Dirt Bike With Big Tires
The X-PRO Storm 125cc Dirtbike, brought to you by XPROUSA, is a powerful and reliable off-road vehicle that promises to deliver an exhilarating riding experience. Please note that this bike is not available for sale in California.
Assembly for this dirt bike includes handle bar brackets, wheels, brakes, number plate, and fender. The specifics of the assembly may differ slightly depending on the model.
One of the standout features of this dirt bike is its 125cc Zongshen engine. This engine is known for its high quality, reliability, and long lifespan. It is a more powerful option that is sure to impress even the most experienced riders.
The X-PRO Storm 125cc Dirtbike also features an upgraded cradle type frame structure. This design provides greater strength and rigidity than other off-road vehicles, resulting in better stability during frequent acceleration and braking.
The plastic parts of this dirt bike are made from high-strength materials that offer good elasticity and toughness. Additionally, the body paint is UV-resistant and will not fade over time.
The strong steel frame of this dirt bike is created through a precision welding process, resulting in a lighter and stronger frame with a longer service life. This attention to detail ensures that the X-PRO Storm 125cc Dirtbike will provide a reliable and exciting off-road experience for years to come.
3. X-Pro Storm 125cc Youth Pit Bike
The X-PRO Storm 125cc Dirtbike, brought to you by XPROUSA, is an impressive off-road vehicle for any adventurous rider. It boasts a powerful 125cc Zongshen engine that is known for its reliability, longevity, and impressive power.
One of the most notable features of the X-PRO Storm is its upgraded cradle type frame structure. This design provides greater strength and rigidity, resulting in better stability during frequent acceleration and braking. It's a reduced version of large off-road vehicles, but with enhanced performance and durability.
The plastic parts of the X-PRO Storm are made with high-strength materials that offer good elasticity, toughness, and overall durability. The body paint is UV-resistant, meaning it won't fade over time, even with prolonged exposure to the sun.
The steel frame and welding process used in the X-PRO Storm are both of high quality. The steel used is of high-strength, making the entire frame much lighter and stronger. The precision welding process ensures that the frame is durable and has a long service life.
It's important to note that the X-PRO Storm 125cc Dirtbike cannot be sold in California. However, for those who are able to purchase this impressive bike, they can rest assured that it's built with high-quality materials and exceptional craftsmanship.
4. Air-Cooled 125cc Honda Dirt Bike Engine
Introducing a powerful and versatile engine that is perfect for those seeking a high-performance option. With a maximum power of 6.5 kW at 7500r/min±375r/min, and a maximum torque of 8.0 Nm at 5000r/min±250r/min, this engine is designed for those who want to get up and go.
This engine is a single cylinder, 4-stroke with air-cooled technology. The clutch is operated manually, giving riders complete control over the vehicle. The gear ratio is 2.833/1.706/1.238/0.958, with a compression ratio of 9.0:1. The primary reduction ratio is 3.722, and the carburetor type is PZ16J. The transmission is a 4-speed, manual clutch, 4 up, and the start mode is kick-starter.
This high-quality engine is suitable for a wide range of applications, including bicycles, models, skateboards, and more. With its excellent performance, it is the perfect accessory for those looking to upgrade their bike's engine.
The engine is compatible with a variety of bike models, including HOMDA CRF50, CRF70, XR50, XR70, Z50, Z50R, CT70 Mini Trail, Z50 Minitrail Monkey, XL70 ST70, QA50, QR50, CL70, SL70, 70 Passport, ST 90K2, ST 90K1, CS 90, SL 90, and ZB 50.
5. X-Pro X9: Ultimate Adult Dirt Bike
The XPROUSA 125cc Dirt Pit Bike is an excellent choice for off-road adventurers. Please note that, unfortunately, this dirt bike is not available for sale in California.
This top-of-the-line dirt bike requires some assembly, including the attachment of handlebar brackets, wheels, brakes, number plate, and fender. However, the assembly required may vary depending on the specific model you choose.
With its powerful 125cc engine, this dirt bike is perfect for tackling any terrain. The bike's sturdy construction ensures a smooth and comfortable ride, while the powerful engine provides excellent acceleration and top speeds.
The bike's adjustable suspension system allows for a personalized riding experience, while the front and rear disc brakes provide exceptional stopping power for added safety.
With a maximum weight capacity of 200 pounds, this dirt bike is suitable for both kids and adults. However, it is important to note that proper safety gear, such as a helmet and pads, should always be worn while riding.
6. 125cc Dirt Bike Pit Bike Adults Dirtbikes Pitbikes 125 Dirt Pit Bike(Green)
The Manual 4-Speed Transmission Dirt Bike is the perfect choice for professionals who want to take full control of their ride. With its quick start feature, it provides the convenience and speed that every rider desires. The bike is equipped with 17"/14" big front/rear wheels, making it much higher and longer than other 125cc displacement bikes, providing greater ground clearance. This feature allows riders to use the bike for an additional 2 years, making it an excellent investment for adults and big boys.
The kick start feature is another convenient addition to this dirt bike. You don't have to worry about battery life or charging, as you can quickly start your ride with just a simple kick. However, some assembly is required for this bike, which includes handlebar brackets, wheels, brakes, number plate, and fender. The assembly process may vary per model, so it's important to carefully follow the instructions provided.
With its excellent specifications and features, this Manual 4-Speed Transmission Dirt Bike is an excellent choice for riders who want to experience the thrill of dirt biking. Its big wheels and higher ground clearance provide a smooth and comfortable ride, while the transmission gives riders full control over their speed and performance. Assembly may take some time, but the end result is well worth it. So, if you're looking for a durable and high-performance dirt bike, this one is definitely worth considering.
7. Zawayine 125cc 4-
The 125CC 4-stroke engine is a versatile powerhouse that can fit a range of vehicles such as Go karts, Quads, Dirt bikes, ATVs, Pit bikes, Buggies, and Pocket rockets.
This engine boasts high performance with a size of 125CC and a gear system of 3 forward, neutral, and reverse. It is a horizontal single-cylinder four-stroke air-cooled engine that starts with an electric start and has CDI ignition. The air filter is 1.4 '' and the carburetor is PZ19. The starter is a kick starter and the maximum net power/rpm is 5.8kw/7500rpm±375rpm. The maximum torque/rpm is 8.5N.m/5000rpm±250rpm and the idle speed is 1500RPM±100RPM.
The bore x stroke is 2'' x 2.2'', with a 4fl oz capacity. The top engine bracket measures 3.6" and the bottom engine bracket is 3.2''. The bolt to bolt measurement is 6". The compression ratio is 9:1 and the front sprockets measure 428-14T. The lubrication is pressure/splash and the oil volume is 30fl oz. The package dimensions are 18'' x 14'' x 12'' and the shipping weight is 48 lbs.
Wiring this engine is made easy with five wires (plugs): gear indicator, yellow wire for the battery, pink (or yellow) wire for the battery, black and red wire for signal trigger, green wire for grounding, and blue and white wires used to trigger the coil.
ZAWAYINE provides excellent warranty service for this 4-stroke engine. If there are any concerns or questions, their customer service team is always happy to help and provide a satisfactory solution. The product is shipped directly from their US warehouse on the same or next day of purchase and usually delivered in 2-4 days.
8. 125cc Dirt Bike Engine Kit With Clutch.
This high-performance engine is perfect for those who are comfortable with faster engines and have a desire to get up and go. It has a wide range of applications and can be used for bicycles, models, skateboards, and more. This engine is an excellent quality motor accessory for bikes.
The engine is a single-cylinder, 4-stroke with air-cooled and clutch operated by hand. It has a Bore x Stroke of 52.4mm x 55.5mm (2.06'' x 2.2''), a displacement of 119.7ml, and a compression ratio of 9.0:1. The engine's maximum power is 6.5 kw/7500r/min ± 375r/min, and its rated power is 5.6 kw/7500r/min ± 375r/min. The maximum torque is 8.0 Nm/5000r/min ± 250r/min, and its idle speed is 1500r/min ± 100r/min. The engine has a minimum fuel consumption of ≤367g/kw.h and an ignition system of CDI. Its start mode is kick-starter.
The engine's spark plug is A7TC, and it has a wet multi-plate clutch. Its transmission is a 4-speed, manual clutch, 1 down 3 up, and its carburetor type is PZ16J. The primary reduction ratio is 3.722, and the gear ratio is 2.833/1.706/1.238/0.958. The engine's lubricant capacity is 900ml, and the lubricant required is SAE15W/40-SE, 4-stroke gasoline engine oil. The package size is 19.7'' x 14.6'' x 13'', and it weighs 46lbs.
This engine is compatible with CRF50/CRF70/XR50/XR70/Z50/Z50R/CT70 Mini Trail/Z50/Minitrail Monkey/XL70 ST70/QA50/QR50/CL70/SL70/70 Passport/ST 90K2/ST 90K1/CS 90/SL 90/ZB 50.
The package includes 1 x 125CC 1P52FMI engine, 1 x kick-starter lever, 1 x gear shift lever, 1 x carburetor, 1 x intake manifold, 1 x CDI, and 2 x intake gaskets. Get ready to take your bike to the next level with this high-quality engine. It is easy to install and will provide you with the power you need to ride with confidence and speed.
9. X-Pro
Introducing the ATV specially designed for younger kids – the 4-stroke 40cc air-cooled engine ATV. With its advanced engine design, there will be no worries about overheating or extra engine maintenance. The chain transmission and pull start provide much easier control and handling for little kids, giving the rider great convenience in the event of a stall. Additionally, the front and rear disc brake provides a better stopping power compared to regular brake, ensuring the safety of your child.
The whole bike passed EPA and manufactured strictly based on EPA standard, ensuring that it is safe for your child. The top speed of around 22 miles/h is a safe design for little kids, and the speed governor on the right side handlebar allows parents to set the proper speed for their kids. This makes it a perfect starter bike for kids between 4 to 7 years old.
The ATV comes with a luggage rack on the front and rear, allowing you to carry extra weight to make sure you have everything you need while riding. The front bumper will protect the ATV in the event of a frontal impact, ensuring the safety of your child. Additionally, the 1.8L fuel tank is designed for good distance riding.
To sweeten the deal, every package comes with X-Pro Gloves, Goggle, and Face Mask, making it a complete package that your child will surely enjoy. With its advanced features and safety measures, this ATV is definitely a great investment for parents who want to introduce their kids to the joys of riding.
Best 125 2 Stroke Dirt Bike FAQs
Are there any specific brands that are known for producing the best 125 2 stroke dirt bikes?
When it comes to 125 2 stroke dirt bikes, there are several brands that are known for producing high-quality and reliable models.
One of the most popular brands in this category is KTM. They have a range of 125 2 stroke dirt bikes that are known for their agility, speed, and durability. Their bikes are designed for both beginners and experienced riders, and they offer a great balance between power and control.
Another popular brand is Yamaha. They have a range of 125 2 stroke dirt bikes that are known for their smooth ride and excellent handling. Their bikes are also known for their durability and low maintenance requirements, making them a great choice for riders of all skill levels.
Other brands that are worth considering include Husqvarna, Suzuki, and Honda. Each of these brands has their own unique features and benefits, so it's important to research and compare different models to find the best one for your needs and preferences.
How does the handling and maneuverability of different 125 2 stroke dirt bikes compare?
When it comes to handling and maneuverability, there are several factors to consider when comparing different 125 2 stroke dirt bikes. One of the most important factors is the bike's weight and size, which can affect how easy it is to handle and maneuver in tight spaces or on uneven terrain. Additionally, the suspension system and wheel size can also play a role in how well the bike handles bumps and jumps.
In terms of specific models, some popular options for 125 2 stroke dirt bikes include the Yamaha YZ125, KTM 125 SX, and Husqvarna TC 125. Each of these bikes has its own unique handling characteristics, with the Yamaha known for its smooth and predictable handling, the KTM for its agility and responsiveness, and the Husqvarna for its stability and traction.
Ultimately, the best way to compare the handling and maneuverability of different 125 2 stroke dirt bikes is to test ride them yourself and see how they feel on the trail. Factors such as your riding style and experience level can also play a role in which bike will be the best fit for you.
How does the suspension on different 125 2 stroke dirt bikes compare?
The suspension on different 125 2 stroke dirt bikes can vary depending on the make and model. Generally, the suspension on these bikes is designed to absorb shocks and protect the rider from bumps and jumps while riding off-road. Some bikes may have adjustable suspension, allowing riders to customize the handling to their preferences.
One popular brand of 125 2 stroke dirt bikes is Yamaha, which features a KYB suspension system. This system is known for its quality and durability, and is often found on high-end dirt bikes. Other brands, such as KTM and Husqvarna, may also feature high-performance suspension systems.
When it comes to comparing suspension on different bikes, it is important to consider factors such as the type of riding you will be doing, your skill level, and your personal preferences. Some bikes may be better suited for aggressive riding and jumps, while others may offer a smoother ride for more casual off-road adventures.
Overall, the suspension on 125 2 stroke dirt bikes can vary greatly, but there are many high-quality options available for riders of all skill levels.
What are some common issues or problems that riders experience with 125 2 stroke dirt bikes?
As with any machine, 125 2 stroke dirt bikes are not immune to issues or problems. Some of the most common ones include:
1. Engine overheating: 2 stroke engines tend to generate more heat than their 4 stroke counterparts, which can cause the engine to overheat if it's not properly maintained. This can be mitigated by ensuring that the cooling system is working properly and that the engine oil is changed regularly.
2. Carburetor problems: The carburetor is responsible for mixing fuel and air in the engine. If it becomes clogged or dirty, it can cause the engine to run poorly or not start at all. Regular cleaning and maintenance can help prevent this issue.
3. Clutch problems: The clutch is responsible for transferring power from the engine to the transmission. If it's not adjusted properly or if the components are worn out, it can cause the bike to stall or have difficulty shifting gears.
4. Electrical issues: The electrical system in a dirt bike can be prone to problems, such as faulty wiring, dead batteries, or malfunctioning spark plugs. Regular maintenance and inspection can help prevent these issues.
It's important to note that many of these issues can be prevented or mitigated through regular maintenance and proper use of the bike.
What are some recommended accessories or modifications for a 125 2 stroke dirt bike to improve performance?
There are several accessories and modifications that can be done to improve the performance of a 125 2 stroke dirt bike. Firstly, upgrading the exhaust system can significantly increase power output and improve throttle response. A high-performance aftermarket exhaust system can also reduce weight and add a more aggressive exhaust note.
Secondly, upgrading the air filter to a high-flow air filter can increase airflow to the engine, resulting in improved performance. Additionally, installing a reed valve kit can improve the bike's low-end power and throttle response.
Thirdly, upgrading the suspension with aftermarket components can improve the bike's handling and stability. This can include upgrading the front and rear shocks, as well as installing stiffer fork springs.
Another modification that can be done to improve performance is upgrading the bike's sprockets. Changing the sprockets can alter the bike's gearing, resulting in improved acceleration or a higher top speed, depending on the desired outcome.
Lastly, upgrading the bike's carburetor can improve fuel efficiency and increase power output. A larger carburetor can allow more fuel and air into the engine, resulting in improved performance.
Overall, these modifications can significantly improve the performance of a 125 2 stroke dirt bike, providing a more enjoyable and competitive riding experience.
What are the most important features to look for in a 125 2 stroke dirt bike?
When looking for a 125 2-stroke dirt bike, there are some important features to consider. Firstly, the engine is the heart of a dirt bike, so it’s essential to look for a reliable and powerful engine. A 125cc 2-stroke engine can produce a good amount of power and torque, but it’s important to choose a model with a good reputation for durability and performance.
Secondly, the suspension system is crucial, especially for off-road riding. Look for adjustable suspension with good travel, rebound and compression damping to cope with varying terrains.
Thirdly, the brakes are essential for safety and control. Look for hydraulic disc brakes with good stopping power and strong bite.
The frame and chassis should be strong and durable enough to withstand the rigors of off-road riding, while also being lightweight and agile.
Finally, consider the ergonomics, including the seat height, handlebar position, and footpegs. These should be comfortable and adjustable to suit your riding style and body size.
Overall, a good 125 2-stroke dirt bike should have a reliable and powerful engine, excellent suspension, strong brakes, a durable frame and chassis, and comfortable ergonomics.
What is the average price range for a high-quality 125 2 stroke dirt bike?
The price range for a high-quality 125 2 stroke dirt bike can vary depending on various factors such as the brand, model, condition, and location of the bike. However, on average, a high-quality 125 2 stroke dirt bike can cost anywhere between $3,000 to $7,000. Some of the top brands that manufacture these types of dirt bikes include Yamaha, KTM, Husqvarna, and Suzuki. Additionally, the cost can also vary based on the purpose of the dirt bike, such as for recreational use or competitive racing. It is important to do extensive research and compare prices from various dealerships and private sellers to get the best deal possible. Additionally, it is recommended to thoroughly inspect the bike and test ride it before making a purchase to ensure that it is in good condition and meets your specific needs.
What is the fuel efficiency of the best 125 2 stroke dirt bikes?
The fuel efficiency of 125 2-stroke dirt bikes can vary depending on several factors such as the engine size, riding conditions, and rider behavior. Generally, 125 2-stroke dirt bikes can deliver between 25 to 35 miles per gallon. However, the fuel efficiency can be improved by maintaining the bike properly, using high-quality fuel, and avoiding aggressive riding. Additionally, some manufacturers have incorporated technology to improve fuel efficiency, such as Yamaha's Power Valve System, which optimizes the fuel-air mixture and enhances combustion efficiency. Ultimately, the best way to determine the fuel efficiency of a specific 125 2-stroke dirt bike is to consult the manufacturer's specifications or consult with a knowledgeable dealer or mechanic.
What is the top-rated 125 2 stroke dirt bike on the market?
There are several 125 2-stroke dirt bikes available on the market that are highly rated by riders and experts alike. However, the top-rated one would depend on various factors, including personal preferences, riding style, and skill level.
That being said, the Yamaha YZ125 is often considered one of the best 125 2-strokes available. It has been a popular choice among riders for many years and has received numerous accolades for its performance, reliability, and overall quality. The bike is known for its lightweight and nimble handling, making it an excellent option for riders who want to tackle tight and technical tracks.
Other highly-rated 125 2-stroke dirt bikes include the KTM 125 SX, Husqvarna TC 125, and Honda CR125R. Ultimately, when choosing a bike, it's important to do your research and consider factors such as price, features, and reviews to ensure that you're getting the best option for your needs and budget.
Which 125 2 stroke dirt bike has the best power-to-weight ratio?
When it comes to the best power-to-weight ratio for a 125 2 stroke dirt bike, the KTM 125 SX takes the lead. This bike has a powerful 125cc engine that can deliver up to 37 horsepower, which is more than any other 125cc dirt bike on the market. Its lightweight design also makes it easier to handle, with a dry weight of just 187 pounds. This combination of power and weight gives the KTM 125 SX a significant advantage over its competitors, allowing riders to accelerate faster and tackle challenging terrain with ease. Additionally, the bike features high-quality suspension, brakes, and tires, making it an ideal choice for competitive racing or recreational riding. Overall, the KTM 125 SX is a top choice for anyone in search of a 125 2 stroke dirt bike with exceptional power-to-weight ratio.
