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125cc 4 Stroke Engine Motor 125cc Engine Upgrade 4-Speed Manual Clutch Pit Dirt Bike Factory Engine Kit Replacement Complete Kit for Honda XR50 XR70 CRF50 CRF70 Motorcycle

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$149.99

$ 66 .99 $66.99

In Stock
  • 🏍️125cc 4-Stroke Engine Motor】Compression Ratio: 9.0:1.Max Torque: 8.0 Nm/5000r/min±250r/min. Compatible with 125cc Motorcycle ATV Dirt Bike and vehicles.This is a great replacement for them. Much better quality than factory motor. The compression ratio is nice and has more power than most factory 125cc motor engine as well.
  • 🏍️125cc Motor Type】CDI / Single Cylinder / 4-Stroke / Air-Cooled / 4-speed / Manual Clutch / Kick-Starter / Wet Multi-Plate / A7TC Spark Plug / PZ16J Carburetor.
  • 🏍️Wide Range of Applications】This 125cc engine fits for such Motorcycles. Fits For HONDA CRF50/CRF70/XR50/XR70/Z50/Z50R/CT70 Mini Trail/Z50/Mini Trail Monkey/XL70 ST70/QA50/QR50/CL70/SL70/70 Passport/ST 90K2/ST 90K1/CS 90/SL 90/ZB 50 / SSR125.
  • 🛒 Includes】This complete engine kit comes with CRF50 125CC Engine + Kick Starter Lever + Gear Shift Lever + Carburetor + Intake Manifold + CDI + Sprocket Cover + Intake Gaskets + Some Screws for Assembly.
  • 🏍️Customer Service】In case of any issues, our dedicated customer service team is ready to assist you and provide prompt after-sales support. If you are a driving enthusiast who loves freedom, pursues speed and passion, then our CRF50 125CC engine will be your ideal choice. With its excellent performance and stable power output, it makes your driving more enjoyable and comfortable.



Product Description

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Powerful Engine

The 4-stroke engine can provide higher intake and exhaust efficiency, it can provide stronger power.

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Effective Cooling System

By adopting an air cooling system, the temperature of the engine can be quickly reduced, effectively preventing overheating.

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Durable Design

Designed with premium aluminium and cast steel, this engine has high hardness, wear resistance.

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Precise Control

Its 4-speed manual clutch transmission provides you with high-precision gear shifting control.

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Details

Engine Dimensions: 42.5 x 27 x 23cm/16.73 x 10.63 x 9in

Package Size: 48.5 x 37 x 35.2cm/19.1 x 14.57 x 13.86in (Outer); 46 x 31.5 x 25.5cm/18.1 x 12.4 x 10in (Inner)

Package Included

  • 1 x CRF50 125CC Engine
  • 1 x Kick Starter Lever
  • 1 x Gear Shift Lever & Carburetor
  • 1 x Intake Manifold
  • 1 x CDI
  • 1 x Sprocket Cover
  • 3 x Intake Gaskets
  • Some Screws for Assembly

Specification

Engine Type Single Cylinder, 4 Stroke
Material Aluminium, Cast Steel
Ignition System CDI
Start Mode Kick-starter
Clutch Wet Multi-plate
Transmission 4-speed, Manual Clutch
Displacement 125CC
Compression Ratio 9.0:1
Max Power 6.5 kW/7500r/min±375r/min
Rated Power 5.6 kW/7500r/min±375r/min
Max. Torque 8.0 Nm/5000r/min±250r/min
Idle Speed 1500r/min±100r/min
Min. Fuel Consumption ≤367g/kW.h
Lubricant Capacity 900ml
Lubricant SAE15W/40-SE, 4-stroke Gasoline Engine Oil
Spark Plug A7TC
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Notes

1.Please note this product is for motorcycles only.

2.Please note that there may be oil stains on the received package. This situation is normal. Please rest assured to use it.

3.The installation is very complicated, so we strongly recommend that this engine be installed by professionals.

4.Please check the lubricating oil lever before driving.

5.Please change the oil and clean filter every 300km and do not exceed 50km/h maximum during the first 500km.

6.Please note that gearshift is prohibited unless the accelerator is loosed.

7.Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering.


Michael
Reviewed in the United States on April 22, 2025
The Magneto stator was faulty I have to buy another stator to replace it and I can't get the correct measurements
Ageman
Reviewed in the United States on April 2, 2025
Starts, runs and shifts properly through all gears. So far so good. Much faster then I was expecting… only complaint is the cdi that came with it was no good.
soohyun
Reviewed in the United States on July 1, 2024
I quickly got the engine that I could install on my Honda XR70 motorcycle and it fit nicely, the 125cc power makes my bike run great, after installing it I rode it around a lot of places. All together it looks perfect and it makes me happy.
Bernice Rubino
Reviewed in the United States on July 1, 2024
This engine motor great ,it is easy to install, I install it on my Honda XR50 motorcycle that my dad gave me and it fits great and runs perfect, I love this engine and it makes my motorcycle drive better, so far I'm very happy with it!