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4 Stroke 140CC Engine Motor, 4 Speed Racing Engine Motor, Pit Bike Engine with CDI Ignition System Fit for Honda CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / XL70 ST70 / QA50

  • Based on 2 reviews
Condition: New
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$350.00 Why this price?

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Availability: In Stock.
Fulfilled by OrudauyShop

Arrives Jul 23 – Jul 27
Order within 16 hours and 58 minutes
Available payment plans shown during checkout

Features

  • Versatile Compatibility: Designed to support a maximum weight of 440 lbs, the 4 stroke engine is built with an aluminum engine body and iron components, Is specifically designed to fit a variety of models including fit for HONDA CRF50, CRF70, XR50, and more, making it the ideal choice for anyone looking to upgrade their mini trail bikes.
  • Transform Your Bicycle: The single cylinder motorcycle engine effortlessly converts your regular bicycle into a high-performance motorcycle, delivering a maximum power of 8kw and a torque of 9.5N.M, enabling you to enjoy thrilling rides at increased speeds and a more exhilarating lifestyle.
  • Powerful Performance: With the robust 140cc complete engine kit, experience impressive acceleration that can take you up to 28mi/h, making your commutes faster and more efficient so you can reach your destinations with ease.
  • Large capacity & low fuel consumption: Featuring a large fuel tank, the 4 stroke ATV motor boasts a capacity of up to 0.53 gallons. This allows for longer trips without frequent refueling, while its economical fuel consumption of approximately 0.66 gallons per 100 km ensures hassle-free adventures.
  • Quiet & Economical: Enjoy the thrill of motorcycle speeds with the economically friendly dirt bike engine, which operates quietly at around 75DB. Perfect for outdoor use, this engine kit offers the excitement of motorcycling without breaking the bank!

Brand: Orudauy


Model Name: 140cc engine


Speed: 8000 RPM


Material: Aluminium Alloy, Cast Steel


Item Weight: 47.2 Pounds


Product Dimensions ‏ : ‎ 14.57 x 13.78 x 19.29 inches; 47.2 Pounds


Item model number ‏ : ‎ 140cc engine


Date First Available ‏ : ‎ March 3, 2025


Manufacturer ‏ : ‎ Orudauy


Country of Origin ‏ : ‎ China


Best Sellers Rank: #1,187,123 in Automotive (See Top 100 in Automotive) #657 in Powersports Engine Kits


#657 in Powersports Engine Kits:


Customer Reviews: 5.0 5.0 out of 5 stars 2 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 23 – Jul 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Worth the money
Goes good so far been running it for about two weeks now, has good power compared to the stock 125cc, valves will need to be adjusted out of the box but other than that it runs and goes great, was a direct swap from the stock 125cc no modifications needed
Reviewed in the United States on April 6, 2025 by Riley Riley

  • Engine is Great
Packing was awesome, very suitable for my HONDA CRF50, it looks great and great customer service!
Reviewed in the United States on March 17, 2025 by Laura Mixon

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