Search  for anything...

125cc 4 Stroke Engine Motor, Single Cylinder Air Cooling 4-Speed Motorcycle Engine, Kick Start Motor with CDI Ignition System and Manual Clutch for HONDA CRF50 CRF70 XR50 XR70 Z50

  • Based on 2 reviews
Condition: New
Checking for the best price...
$265.99 Why this price?

Buy Now, Pay Later


As low as $44.33 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by NAZEAOB

Arrives Saturday, Jun 13
Order within 21 hours and 49 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • Durable Construction: The 125cc engine is constructed using high-quality materials and precision-engineered components, enabling this four-stroke engine to withstand harsh environments and deliver exceptional durability and reliability.
  • Powerful Performance: The four-stroke engine is characterized by high power, high RPM, and high torque, delivering outstanding performance.
  • Large Fuel Tank Capacity: The bike motor kit is equipped with a large fuel tank (30.43 ounces), enabling extended runtime. As a result, you wont need to refuel frequently, making it extremely convenient to use.
  • Excellent Heat Dissipation: The 4-stroke bicycle engine kit features a heat dissipation design that allows for rapid cooling, preventing the engine from overheating and burning out due to prolonged use. Additionally, the air cooling system enables faster cooling, reducing the likelihood of malfunctions.
  • Superior Design: The dirt bike engine is equipped with a high-performance carburetor, offering advantages such as simple structure, low cost, easy maintenance, and reliable durability.

Description

SpecificationsColor: Black, SilverAssembly Required: YesEngine Type: 4-Stroke, Single CylinderCooling System: Air CoolingEngine Displacement: 125ccTransmission: 4-speed, Manual Clutch 1-N-2-3-4Clutch: Wet Multi-disc ClutchLubricant: SAE 15W/40-SE, Four-stroke Gasoline Engine OilCompression Ratio: 9.0:1BoreStroke: 52.455.5 mm/2.062.18inMaximum Power: 6.5KW/7500 rpm ± 375 rpmRated Power: 5.6KW/7500 rpm ± 375 rpmMax. Torque: 8.0 Nm/5000 rpm ± 250 rpmIdle Speed: 1500 rpm ± 100 rpmMin. Fuel Consumption: ≤367g/kw.hIgnition System: CDIStarting Mode: Kick StarterSpark Plug: A7TCCarburetor Type: PZ22 Primary Reduction Ratio: 3.722Lubricant Capacity: 900ml/30.43ozItem Weight: 19.1kg/42.1lbsProduct Size: 442922cm/17.3211.48.66inGross Weight: 21.5kg/47.4lbsPackage Size: 483735cm/1914.614in Package Included1 4-stroke EngineAll Accessories for InstallationNotes1.The installation manual is not included. Professional installation is highly recommended. Please note that the applicable models are only for reference.2.Please carefully read the product label and pay attention to the safety precautions inside. Before use, please carefully check the cable, power supply, etc., and take proper protective measures to avoid potential safety hazards.3.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 you order.

Brand: NAZEAOB


Model Name: 125cc engine


Item Weight: 42.1 Pounds


Manufacturer: NAZEAOB


UPC:


Manufacturer: ‎NAZEAOB


Brand: ‎NAZEAOB


Model: ‎125cc engine


Item Weight: ‎42.1 pounds


Product Dimensions: ‎17.32 x 11.4 x 8.66 inches


Item model number: ‎ACYQ-149


Exterior: ‎Painted


Manufacturer Part Number: ‎ACYQ-149


Date First Available: June 23, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 13

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
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great motor
The performance of this engine has pleasantly surprised me. It starts with just a push of the throttle and hasn't given me any trouble so far. The price and quality are unbelievably good! Highly recommended.
Reviewed in the United States on September 8, 2025 by Val

  • Reliable engine
I installed it on my dirt bike. The installation was super easy, and the bike started up smoothly. But the best part is its powerful performance. I'm extremely satisfied with it—the quality absolutely rivals expensive engines. I highly recommend it.
Reviewed in the United States on September 8, 2025 by Jan van Zeeventer

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...