Best Pit Bike Engine | 110cc, 125cc, 140cc, 150cc | Reviews 2022

Pit bikes usually come with a low-powered engine. As a result, you can not expect much speed and distance with the stock bike. But there are no restrictions in replacing the old and dusted engine with a new one. Replacing the motor with a polished and refined heavy-duty engine will make the bike enough faster than the stock item.

Most pit bikes and dirt bikes tend to share the same characteristics. Installing a new and versatile engine onto your pit bike will also give you a boost to take the bike on the dirt trail.

This article contains the best five pit bike engines you can try to replace any 50cc to 110cc engines. If you are interested, let’s get started with our presentation. But before that, here is our top pick for you-

X-PRO 125cc 4 stroke Pit/Dirt Bikes Engine

A combination of quality and perfect power production

Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike

An engine that saves your bucks without deteriorating the quality.

JCMOTO Lifan 140cc Engine Motor

A perfect replacement for any pit bike engine up to 140cc.

X-PRO 110cc Dirt Pit Bikes Engine

X-pro engines never disappoint with mileage and speed. 

Piranha 150cc Kick Start Pit Bike Complete Engine

Piranha 150cc engine knows when to remain calm.

Best Pit Bike Engine

X-PRO 125cc 4 stroke Pit Dirt Bikes Engine Motor (Best for 125cc)

X-PRO 125cc 4 stroke Pit Dirt Bikes Engine

Specifications

Engine name

BS125

Engine type

Single cylinder,4-stroke, air-cooling, horizontal

Displacement(ml)

123.7

Dimension(mm*mm*mm)

457x313x352

Weight(kg)

23.5

Max.Power(kW.r.min)

6.2.(8500+-5%)

Max.Torque (N.m.r.min)

8.5*(7500+-5%)

Compression Ratio

9.3: 1

Bore and Stroke(mm*mm)

54*54

Ignition method

CDI

Lubrication method

Pressure and Splash

Min.Fuel Consumption (g|Kw.h)

equal or lesser than 367

Starting method

Kick

Clutch method

Manual Wet Multi-Plate

Gearshift Method

Constant-mesh, two-stage transmission,4-speed Gearshift

This X-pro 125cc 4-stroke pit/dirt bike engine is our top pick for multiple reasons. First of all, quality and affordability are always the ultimate factors people haul over while purchasing a new item. It is the combination of a favorable price and quality that gives a product peak popularity. This 125cc 4-stroke engine with a decent price range and quality will always please you with the service.

The CDI ignition method of the engine will allow the engine to start firing at the first kick. Increase the cc capacity of your low-powered pit bike up to 125cc by installing this exquisite piece of item. The engine also has a reputation to deliver a moderate amount of horsepower to make your bike faster and more authentic.

Moreover, the 4-speed shifting process will be handy to shift the gear in four different gear levels to enjoy the most convenient experience on any terrain. This 125-cc engine will deliver up to 8500rpm speed with nearly 7500rpm torque capacity, making your low-powered pit bike a beast.

On the other hand, the perfect compression ratio will ensure quick transmission between the wheel and engine to enjoy a smooth starting experience. Furthermore, the inclusion of the shift and start lever makes the engine more than versatile for any pit bike you have.

Finally, the aluminum cylinder head with the iron cylinder body will prevent the engine from rust and corrosion damage.

Key Features

  1. Two-stage transmission.
  2. Four shifting gears.
  3. 8500rpm top speed.
  4. Manual clutch.
  5. 23.5kg weight.

Pros

  1. This one is an excellent engine at an affordable price range. Getting quality at an economical budget is not the easiest task all the time.
  2. The engine comes with multiple built-in gears, making the assembly process much easier.
  3. Replacing the engine will deliver more speed and versatility to your low-powered pit bike.

Lifan 125cc Engine Semi-Auto 4 Stroke Motor for Trail Bike (Best for chinese)

Lifan 125cc Engine Semi-Auto 4 Stroke engine

Specifications

Engine name

Lifan 1P54FMI

Engine type

Single cylinder,4-stroke, horizontal

Dimension(mm*mm*mm)

470x275x280mm

Weight(kg)

23kg.

Max.Power(kW.r.min)

5.8k.w/7500rpm

Max.Torque (N.m.r.min)

8.5N.m/5000rpm.

Horsepower

11hp

Transmission

N-1-2-3-4

Idling speed

1500r/min

Shaft size

20mm.

Oil 

4T oil.

Starting method

Kick start/ electric

Clutch method

Automatic

Carburetor size

22mm or 19mm.

Max. driving speed

50mph (80km/h)

If you love gathering information about pit bikes, you probably know about Lifan engines. They are everywhere. Lifan engines are budget-friendly, loaded with qualities, and delivers the best service on all occasions. This 125cc engine from Lifan functions through a four-stroke transmission process, allowing you to face extreme situations.

The engine supports both kick and manual starting process, making it enough versatile to cope up with your need. Furthermore, the engine supports up to four shifting gears, allowing you to maneuver the bike with ease in different situations.

This Lifan engine has the potential power to deliver up to 11 horsepower, allowing you to get more mileage with your pit bike. The engine can reach a maximum number of 50mph top speed, making your pit bike way faster than earlier.

Moreover, the engine also comes with a decent weight limit. 23 kgs of weight will prevent your pit bike from being bulkier. Finally, the engine will deliver up to 7500 rpm of top power with 5000 rpm of torque capacity. We can bet you would not find a better engine for your pit bike at that price range.

Key Features

  1. 125cc engine.
  2. Four-stroke.
  3. Kick start and manual starting process.
  4. Four shifting gears.
  5. 7500 rpm max power.

Pros

  1. Lifan engines are popular for delivering quality engines for a long time.
  2. Controlling the bike will be much easier with the automatic clutch system.
  3. You can expect to get all these features at a very good price range.
  4. The kit also adds multiple gears, including the intake manifold, kick starter, and manifold kit.

Note

Any new engine requires some time to get its full functionality. Run the engine at least two times with half throttle and let it cool completely before you ride.

JCMOTO Lifan 140cc Engine Motor for XR50 CRF50 XR CRF 50 70 ATC70 (Best for 140cc)

JCMOTO Lifan 140cc Engine

Specifications

Engine name

Lifan 140cc engine

Engine type

Single cylinder, horizontal, 4-stroke, 2 valves, OHC racing head, oil cooled

Displacement(ml)

140cc

Dimension(mm*mm*mm)

470 x 275 x 280mm

Weight(kg)

23kg

Max.Power(kw.r.min)

8kw (7500±375)

Max.Torque (N.m.r.min)

9.5N.M(5000±250)

Compression Ratio

9.47:1

Bore and Stroke(mm*mm)

55mm x 59mm

Ignition method

CDI

Lubrication method

Pressure and Splash

Engine oil

900ml, 15W/40-SE

Starting method

Kick start

Clutch type

Manual clutch.

Gears

4-speed, N1234, manual clutch, START IN ANY GEAR! 4 up!!

Sprocket

15T 428 CHAIN

Are you looking for a high-end engine replacement for your pit bike? consider choosing this 140cc Lifan pit bike engine from TDPRE. This one is a single-cylinder four-stroke engine to boost the performance of your pit bike.

This 140cc engine also supports CDI ignition, allowing you to start the engine with one kick. By the way, the engine uses a kick start lever to start the transmission. On top of that, the decent compression ratio of the engine will allow it to be faster and more productive.

Furthermore, the engine is compatible with a four-way gear shifting mechanism. You will be able to shift the gears from one to four to maneuver the bike in different conditions.

The installation process of this engine is much easier to give you relief. Remove the old engine and reverse the process to reinstall the 140cc engine with ease. The optimum weight capacity of the engine will also please you to a great extent. 

Again, the engine will deliver up to 7500rpm of max power with nearly 5000 rpm of torque capacity. This150cc pit bike engine should be an excellent replacement for your 50cc to100cc pit bike. 

Key Features

  1. Single cylinder
  2. Four-stroke.
  3. 7500 rpm max power.
  4. 5000 rpm torque.
  5. Perfect compression ratio.

Pros

  1. The installation of this engine on your pit bike will make the bike faster and more charismatic.
  2. The installation process of this engine is much simpler.
  3. The engine comes with the perfect dimension to fit the most popular dirt and pit bikes on the market.

X-PRO 110cc Pit Bikes Engine (best for 110cc)

X-PRO 110cc Dirt Pit Bikes Engine

Specifications

Engine Name

 BS110

Engine Type

Singlecylinder,4-stroke,air-cooling,horizontal

Displacement(ml)

106.7

Dimension(mm*mm*mm)

 457x313x352

Net Weight(kg)

23.5

Max.Power(kw.r.min)

5.2*(8000+-5%)

Max.Torque (N.m.r.min)

 6.9*(6000+-5%)

Compression Ratio

 9.7:1

Bore and Stroke(mm*mm)

52.4x49.5

Ignition method

CDI

Lubrication method

Pressure and Splash

Min.Fuel Consumption(g.Kw.h)

is equal or lesser than 367

Starting method

 Kick

Clutch method

 Manual Wet Multi-Plate

Gearshift Method

Constant-mesh, two-stage transmission,4-speed Gearshift

This X-Pro 110cc engine can be an excellent replacement for your 50cc, 70cc, or 110c pit bike. Installing this engine on your pit bike should make it faster and more vibrant. This one is also a single-cylinder engine with a four-stroke transmission process.

Furthermore, you will get approximately 8000rpm maximum power with around 6000rpm maximum torque capacity. The compression ratio of the piston is9.7:1. As a result, you can expect more speed at the lowest time. Moreover, the CDI ignition system will pace up the engine firing process.

This 110cc pit bike engine also comes with a four-speed gear shifting process. This will allow you to control the vehicle in different circumstances with proper dexterity. You can expect almost 106.6ml displacement with the installation of this exclusive motor.

You have to fire up the engine through a kick-start lever. The engine does not support the electrical starting process. On top of that, the engine will always please you with the manual clutch mechanism. If this one does not fit your bike, nothing will.

Key Features

  1. Single cylinder
  2. Four-stroke.
  3. 8000rpm maximum power.
  4. 6000rpm torque.
  5. Four-speed gear shifting.

Pros

  1. This motor should be a perfect replacement for any 50cc to 110cc pit bike.
  2. The motor will deliver a formidable amount of power to boost your bike’s performance.
  3. This motor will ensure faster transmission with an essential compression ratio.

Piranha 150cc Kick Start Pit Bike Complete Engine (best for 150cc)

Piranha 150cc Pit Bike Engine

Specifications

Displacement

149cc

Engine Type

Air Cooled, Single-Cylinder, 2-valve, 4-stroke

Bore/Stroke

56mm x 59mm

Final Drive

 Chain

Fuel Delivery

 no

Fuel

Unleaded / 91 Octane

Recommended Engine Oil

10W-40 Petroleum-Based (No synthetic)

Kick Start

Yes

Electric Start

no

CDI

 no

Auxiliary Output

 no

Transmission

 4-Speed Manual 4Up

Shift-Pattern

 Four-speed Transmission: N-1-2-3-4

Clutch

Rear 5 plate manual

We are at the end of our product discussion section, and we will not disappoint you with our last recommendation, too. This Piranha 150cc pit bike engine is always an ideal choice to enhance the quality of your pit bike to another level. Like the above four motors, this one is also a four-stroke single-cylinder engine to match with the most popular pit bikes.

The 150cc engine with a four-speed gear shifting transmission should enable you to drive your pit bike on any terrain. Furthermore, the four-speed manual transmission mechanism will allow you to control the bike in different trails with proper dexterity.

The engine supports the kick-start-lever starting process, making the transmission process way faster than usual. By the way, the engine does not support CDI ignition, providing enough responsibility for your shoulder. On top of that, the decent compression ratio of the engine will always keep you ahead of your competitors.

If you have an old and dusted pit bike inside of your garage, bring it back to life by installing this exclusive Piranha 150cc motor engine. This will allow you to transform your bike into an upgraded edition. 

Key Features

  1. Four-stroke.
  2. Single cylinder.
  3. Four-gear shifting process.
  4. Kick start.
  5. No CDI ignition.

Pros

  1. Installing this motor engine will allow you to excavate more remote terrains.
  2. The engine will deliver more speed and rpm to beat your competitors.
  3. The manual clutch controlling will prevent accidental transmission.

Note

Always use the specific fuel or oil to retain the health of the engine for a long time. Using the wrong oil can deteriorate the condition of the motor severely.

Choose a pit bike engine

Every smallest particle of an automotive vehicle's engine is important. But it's not possible checking every tiny thing of an engine you are aiming to purchase. Here are some of the most important things you should not miss checking while purchasing an engine for your pit bike and dirt bike-

Starter 

Some engine supports electrical automatic starting process, whereas some others need to start through a kick start lever. We are not here to specify the best one between these two, but we would love to tell you to choose the one you feel most comfortable with. A good starter makes the transmission process way faster. It’s the beginning step of firing up the engine for another round of adventure. If you are not comfortable with electric pit/dirt bikes, consider going with kick start engine. This will reduce the burden on your shoulder.

Transmission process

The transmission process of an engine is always a culmination of complex procedures. But you don’t need to be a professional to understand the simplistic procedure. The transmission process means the processes the engine takes to deliver the power to the wheel so that the bike can move. A four-stroke engine requires to complete four different strokes to complete a cycle of transmission. On the other hand, a two-stroke engine requires only two strokes to complete a cycle. Two-stroke engines are prevalent among cars or electrical vehicles. If you want an engine replacement for your pit bike or dirt bike, a four-stroke engine should be the ideal choice most of the time.

Shifting gear

Shifting the gear protects you from unprecedented events. Most dirt bikes or pit bikes will come with five different gears, including neutral gear. Some of the bikes may also offer six gears. Always choose an engine with the appropriate number of shifting gears. Besides, learning the ways of shifting the gears can also protect you from unwanted events. The inclusion of different gear levels makes any bike more versatile in controlling with more dexterity.

Power production

An engine delivers power in multiple categories. Take your time to check all the power outputs of an engine, including rpm, horsepower, torque, etc. The better the number of all these stats, the more efficiently the engine should perform. Besides, checking the compression ratio of the motor is another essential aspect that would allow the engine to deliver faster transmission.

Specification chart

Every dirt bike and pit bike engine comes with a specification chart. Double-check all the information listed down on the chart to have a better understanding of the engine. The specification chart saves your time from hauling over here and there to learn about the specification. If you think everything is okay with the specifications, grab it with full confidence.

Understanding the transmission of a pit bike/ dirt bike engine

  • When you kick the kick start lever through your feet, it creates an ignition inside of the engine.
  • The ignition activates the piston of the cylinder, allowing the crankshaft to rotate at a rapid rate.
  • The crankshaft is connected with numerous gears that help to transmit the power in different parameters. Some of the gears will multiply the power, whereas some others will reduce the speed of the transmission.
  • The shifting gear lever helps to manipulate the gears to get the optimum speed of transmission.
  • A final drive stays connected to the wheel. The combined power output of the engine transmits through that drive to the rear wheel. As a result, the bike keeps moving when you start the engine.

Final words

A stock pit bike may fail to deliver optimum performance after a couple of years. One should never consider it a dead rubber then. You can multiply the power of the bike to a great extent by installing a powerful engine inside the compartment. If you are on the way to get the best replacement engine for your pit bike, consider checking the list we have made for you. We hope you will love the experience in the longer run!

Last Updated on June 27, 2022 by fahad

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