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TFCFL 125cc Engine 4 Stroke Motor Single cylinder with Air-Cooled Motor Engine Pit Dirt Bike For Honda CRF50 CRF70 XR50 XR70 Dirt Pit Bike Motorcycle Spark Plug A7TC (125cc Engine 4 Stroke)

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$219.99

$ 99 .00 $99.00

In Stock

About this item

  • 【Type】:#92 gasoline; Single cylinder, 4-stroke with air-cooled, and clutch operated by hand.
  • 【Power】: Max Power: 6.5 kW/7500r/min±375r/min, Max Torque: 8.0 Nm/5000r/min±250r/min;Idle Speed: 1500r/min, Min Fuel Consumption: ≤370g/kw.h, Ignition System: CDI.
  • 【High performance】: A high performance engine, perfect for those comfortable with faster engines and have a desire to get up and go; Wide range of applications, can be applied for bicycles, models, skateboards and so on. Excellent quality, great bike engine motor accessories.
  • 【Gear Ratio】: Gear Ratio:2.833/1.706/1.238/0.958, Compression Ratio: 9.0:1, Primary Reduction;Ratio: 3.722, Carburetor Type:PZ16J,Transmission:4-speed, Manual clutch,1-N-2-3-4; Start Mode: Kick-starter
  • 【Fits】: HONDA 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.



Product Description

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

The CRF50 125CC engine is a powerful and reliable motor designed for off-road motorcycles. It offers an impressive combination of performance and durability, making it a popular choice among riders.

This engine features a displacement of 125CC, providing ample power for various off-road applications. It is built with high-quality components and precision engineering, ensuring reliable performance even in demanding riding conditions.

The CRF50 125CC engine is known for its smooth power delivery, allowing riders to accelerate quickly and effortlessly. It generates a strong torque output, enabling riders to conquer challenging terrains with ease.

With its advanced design, the engine offers excellent fuel efficiency, allowing riders to enjoy longer rides without frequent refueling. It also incorporates a reliable cooling system to prevent overheating during prolonged use

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

The CRF50 125CC engine is easy to maintain, with accessible components and user-friendly features. Routine maintenance tasks such as oil changes and spark plug replacements can be performed with minimal effort.

Safety is a priority with this engine, as it includes built-in features such as a reliable ignition system and a robust exhaust system that meets emission standards. These safety measures ensure a smooth and secure riding experience.

The CRF50 125CC engine is compatible with a wide range of off-road motorcycles, providing riders with versatility and options. It is designed to fit seamlessly into the frame of the bike, ensuring proper alignment and optimal performance.

Whether you're an experienced rider seeking high performance or a beginner looking for a reliable engine, the CRF50 125CC engine delivers on both fronts. Its power, durability, and ease of maintenance make it a sought-after choice for off-road enthusiasts

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Powerful Performance

The CRF50 125CC engine offers impressive power and torque, providing riders with an exhilarating off-road experience and the ability to tackle challenging terrains

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Reliable and Durable

Built with high-quality components and precision engineering, this engine is known for its reliability and long-lasting durability, ensuring consistent performance even in demanding riding conditions.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Smooth Power Delivery

The engine delivers power smoothly, allowing for seamless acceleration and precise control, giving riders a confident and enjoyable riding experience.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Fuel Efficiency

The CRF50 125CC engine is designed for optimal fuel efficiency, allowing riders to cover more miles on a single tank, saving both money and time spent refueling

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Easy Maintenance

With accessible components and user-friendly features, this engine is designed for easy maintenance, making routine tasks such as oil changes and spark plug replacements hassle-free.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Reliable Ignition System

The engine features a reliable ignition system that ensures easy starting and consistent performance, reducing the chances of any interruptions during rides.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Emission Compliance

The CRF50 125CC engine is equipped with a robust exhaust system that meets emission standards, promoting environmental friendliness and ensuring compliance with regulations.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

Versatile Compatibility

This engine is compatible with a wide range of off-road motorcycles, providing riders with flexibility and options to choose the bike that suits their preferences and needs.

TFCFL 125cc Engine 4 Stroke Motor Single cylinder

1

QA1

Question:

Which wires go to the ignition coil?

Answer:

Please see the top of the line,that it is.

The motor is stuck: disassemble it to see where it is and which gear is stuck, and it needs to be replaced

The motor is stuck: check the gearbox

1

QA2

Question:

What Wiring harness can I buy that will fit this engine?

Answer:

Hello, Sir Please do not worry about it,from the first one picture you can see that there is a harness at the top of the engine,when you install it in the engine then you could use it well now.

If the shell of the product is damaged: as long as it does not affect the installation and does not leak oil, it can be used normally

1

QA3

Question:

Can this replace ssr 110?

Answer:

Hello, My dear customer,this one could replace the ssr 110. Thank you!

No sparks: Check the spark plug and ignition coil for damage

The product does not start, there is no compression: first check where the problem is according to the exclusion table (the exclusion table is in the cloud disk: the motorcycle engine cannot start the exclusion table)

Oil leakage: If there is only oil on the box, there is no damage, you can use it with confidence, the oil is left by the test, caused by bumps in the road. If there is damage, you need a detailed drawing, replacement accessories

1

QA4

Question:

Whats the shift pattern? 1 down then goes in nuetral then 234?

Answer:

Yes,It’s almost the same as you said. Whie there is a reverse gear and the rest is forward,please make sure that you could clearly know the reverse gear.

Blue smoke: The customer can only add 240ML of oil if he adds too much oil

PARAMETERS

Displacement 125cc
Ignition CDI
Type Single cylinder, 4-stroke with air-cooled
Bore*Stroke 52.4mm*55.5mm
Lubrication SAE15W/40-SE, 4-stroke gasoline engine oil
Idle Speed 1500r/min±100r/min
Lubricant Capacity 900ml
Max Torque 8.0 Nm/5000r/min±250r/min
Year Manufactured 2023
Max Power 6.5 kW/7500r/min±375r/min
Fuel Consumption ≤367g/kw.h
Compression ratio 9.0:1
Transmission 4-speed, Manual clutch
Gear Ratio 2.833/1.706/1.238/0.958
Start Mode Kick starter
Rated Power 5.6 kW/7500r/min±375r/min

Alan Brewington
2025-09-04 11:09:56
Had some issue with the motor kickstart. But they kindly replacing it. But other wise very solid engine perfect for small pit bikes.
Terron Brown
2025-08-13 18:11:30
Motor works and it shipped fast.
Rowe
2025-07-04 16:45:35
This engine has been solid for 2 years of some pretty hard riding by my son and various adults. I replaced a faulty engine on a TaoTao DB14 and have very few complaints. I used another carb that I got here for $15, usually starts in 2-3 kicks and runs very strong. The shifter is a little clunky for kids and the case is wider that stock but I expected that. It bolted right in, I also had to get a new throttle cable because of length. Change the oil immediately, use 4 stroke motorcycle oil.
Freddy acosta aguilera
2025-05-26 15:46:59
This unit is just a crap ,take 3 hours to get the kick ,when it runs is good but the issues is get it started,I don’t recommend this BS ,the seller doesn’t no nothing about the motor they sale ,is amazing they don’t know how to answer when I asked about what harness for switch and everything else this motor use,is dumb Amazon is getting down,they let everyone sale through there website,with out at least checking first
George holland
2025-05-16 15:51:44
Very good motor faster than the one I took off easy to install easy to wire up would recommend it
DaHandyman
2025-04-04 17:12:40
Fast shipping and is a great replacement motor for my grandson’s ATV.
Customer
2025-03-06 16:27:58
Exactly what I wanted for my moped
Bobby
2024-12-30 18:14:45
The product itself is a good running engine. No instructions came with it. There is a pinned connector exiting the engine case that fits the cdi and what not. This connector goes to the transmission for a gear indicator and will not facilitate a running engine. It took me a little while to figure that out but once I did I slapped this bad boy into a 1984 honda TRX with a very minor amount of modification to the fame(drilled one 1/2" hole).
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