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Pit bike 125cc engine

(1561 products available)

About pit bike 125cc engine

Types of Pit Bike 125cc Engine

A pit bike 125cc engine is a tiny, lightweight motorcycle. It is perfect for beginners. The 2 stroke dirt bike 125cc engine generates more power than the smaller one. It is also lighter and easier to handle than the bigger engines. The 125cc engine is great for learning and a lot of fun to ride. The engine is available in four types:

  • Horizontal engine: The 125cc horizontal engine has a simple design. It is easy to work on and maintain. This engine is lighter and more compact than other engines. It has a lower center of gravity, which offers better handling and stability. The horizontal engine's power delivery is smoother and more predictable. It is ideal for casual riding, beginners, and training.
  • Semi-automatic engine: A 125cc semi-automatic engine has a combination of manual and automatic transmission. It allows users to shift gears without using a clutch. The semi-automatic engine offers more control and rider involvement than a fully automatic transmission. It is easier to operate and learn than the manual transmission. The semi-automatic engine is suitable for beginners, casual riding, and light off-road use.
  • 4-speed engine: A 125cc engine with a 4-speed transmission offers a wide range of gear ratios. The 4-speed engine provides good acceleration and low-end power. It is suitable for short tracks and low-speed riding. The engine is simple and easy to maintain. It is affordable and suitable for beginners.
  • Manual clutch engine: The 125cc engine with a manual clutch requires users to change gears using the clutch lever. It offers more control and performance than semi-automatic engines. The manual clutch engine is suitable for advanced riders, off-road riding, and racing. It is more complex and requires more skill to operate than semi-automatic engines.

Specifications and Maintenance of Pit Bike 125cc Engine

  • Always Use the Right Oil
  • Motor oil is the lifeblood of the pit bike 125cc engine. It lubricates the moving parts and helps to keep the engine cool. Using the right type of oil is crucial. Look for oil that's specifically made for 4-stroke engines. The oil should have an SAE rating of 10W-40 or 20W-50. Change the oil after the first two to three hours of riding. Afterward, change the oil every 15 hours of riding or once a month, whichever comes first. This will help to keep the engine in good shape.

  • Check the Oil Level Regularly
  • It is important to check the oil level before riding the bike. First, make sure the bike is on level ground. Next, pull out the dipstick, which is used to check the oil level. Wipe it with a clean cloth before putting it back in. Take it out again and check the oil level. The oil should be in between the high and low marks. If the level is low, top up the oil. Overfilling the bike with oil is also not advisable. This could cause the oil to leak out of the engine.

  • Change the Oil Filter
  • The oil filter should be changed when changing the oil. This is because the oil filter is used to remove dirt and contaminants from the oil. A clogged oil filter could cause the engine to wear out. Only use oil filters designed for the bike's engine. This will help to protect the engine.

  • Check the Valve Clearance
  • There are valves in the engine that need to be checked and adjusted from time to time. The valves need to be checked after the first three hours of riding the bike. After that, check the valve clearance every 15 hours of riding. This is done to ensure that the valves open and close properly. Look through the bike's manual for the valve clearance specifications.

  • Change the Spark Plug
  • The spark plug is responsible for igniting the fuel-air mixture in the engine's cylinder. It needs to be replaced after the first 20 hours of riding. Afterward, change the spark plug every 30 hours of riding.

  • Adjust the Carburetor
  • The carburetor mixes air and fuel for combustion in the engine. If the carburetor is not properly adjusted, the bike may not start or run well. Look through the bike's manual for the correct carburetor settings.

  • Check the Cooling System
  • Make sure the cooling system is working properly. The cooling system prevents the engine from overheating. Check if the radiator is leaking or clogged. Also, look at the hoses for any damage. Replace any damaged parts to avoid engine damage.

  • Inspect the Drive Chain
  • The drive chain moves power from the engine to the wheels. It should be lubricated and adjusted properly. Check the chain for any signs of wear and replace it when necessary. Also, look at the sprockets for damage and change them after 30 hours of riding.

  • Check the Air Filter
  • The air filter traps dirt and debris from entering the engine. The air filter should be checked before every ride, especially in dusty environments. Clean the air filter periodically and replace it when it's worn out.

  • Inspect the Engine Mounts
  • The engine mounts hold the engine in place. Check the engine mounts for any cracks or damage. Tighten any loose bolts and replace worn-out mounts.

  • Follow the Maintenance Schedule
  • Regular maintenance is important to keep the pit bike 125cc engine in good condition. Look through the bike's manual for the manufacturer's maintenance schedule. Stick to the schedule and perform all the necessary checks and replacements. This will help to ensure that the engine runs smoothly and lasts long.

How to choose pit bike 125cc engines

  • Performance Considerations
  • In choosing a Pit Bike 125cc engine, buyers need to consider performance aspects. They need to assess the power output, which is usually measured in horsepower. A higher horsepower indicates a more powerful engine that can provide greater acceleration and top speed. The engine's torque, measured in pounds-feet, also needs to be considered. The engine's ability to deliver power at lower speeds and improve acceleration is indicated by higher torque ratings. Furthermore, business buyers need to consider the engine's compression ratio. A higher compression ratio indicates more efficient fuel combustion, resulting in increased power and performance. It is important for them to check for any additional performance enhancements, such as improved intake and exhaust systems.

  • Compatibility
  • Buyers need to ensure that the ssr 125 engine they choose is compatible with the pit bike's frame and other components. They need to check the engine mounting points and dimensions to ensure a proper fit without modification. Additionally, they need to consider compatibility with the bike's transmission system, sprockets, and chain size to ensure smooth operation and optimal performance.

  • Weight and Size
  • While considering weight and size, business buyers need to consider the pit bike's handling and performance by choosing a 125cc dirt bike engine that adds minimal weight to the overall bike. Also, they need to consider the engine's physical dimensions to ensure proper fitment within the pit bike's frame and other components.

  • Reliability and Durability
  • Business buyers need to consider the reliability and durability of the ssr 125 motor. They need to research the engine's reviews and ratings to assess its reliability based on other experiences. Moreover, they need to check the warranty period offered by the engine manufacturer, as a longer warranty period indicates more confidence in the engine's durability and reliability.

  • After-Sales Support
  • Business buyers need to consider the availability of after-sales support when selecting a ssr 125 engine. They need to ensure that the engine supplier provides adequate customer service, technical support, and spare parts availability. Additionally, they need to research the supplier's reputation and reviews to assess their after-sales support services.

How to DIY and Replace Pit Bike 125cc Engine

Replacing a 125cc dirt bike engine requires mechanical expertise and skills. However, with the right tools and knowledge, it can be done. Here is a step-by-step guide on how to replace a 125cc engine.

  • Step 1: Prepare the Bike
  • Park the bike on a flat surface and disconnect the battery. Drain the fuel tank and remove the carburetor. Remove the exhaust pipe and unscrew the engine mounting bolts. Once the engine is loose, remove the chain and sprocket.

  • Step 2: Remove the Old Engine
  • Remove the spark plug cap, the kick start lever, and the gear shift lever. Disconnect the wiring harness and remove the engine from the frame.

  • Step 3: Install the New Engine
  • Mount the new engine into the frame and reattach the engine mounting bolts. Reconnect the wiring harness, the gear shift lever, and the spark plug cap.

  • Step 4: Reassemble the Bike
  • Reinstall the chain and sprocket, the exhaust pipe, and the carburetor. Refill the fuel tank and connect the battery. Perform a test run to ensure the new engine is working properly.

Q and A

Q1. What is the difference between a 110cc and a 125cc pit bike engine?

125cc pit bike engine is more powerful and faster because it has a higher displacement. It can also carry heavier riders and provide better acceleration.

Q2. How many horsepower does a 125cc 4 stroke engine have?

Generally, a 125cc 4-stroke engine produces between 7-9 horsepower.

Q3. How often should the oil be changed in a 125cc pit bike engine?

Engine oil should be changed every 15-20 hours of riding in a 125cc pit bike engine. However, it can be changed depending on how and where the bike is used.