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125CC 4-Stroke Engine Motor Kit, Single Cylinder Air-Cooled 125cc Small Motor Engine for Honda CRF50 XR50 CRF70 Z50R QR50 Dirt Pit Bike, Motorcycle with Manual Clutch Carburetor

  • Based on 4 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by Borutools-US

Arrives Sep 12 – Sep 21
Order within 5 hours and 21 minutes
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Features

  • Applicable:For 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
  • Main Parameters:Fuel Consumption: 367g/kw.h; Displacement: 125cc;Compression ratio: 9.0:1 Transmission: 4-speed, Manual clutch;Clutch: Wet multi-plate; Max Power: 6.5 kW/7500r/min375r/min; Spark Plug: A7TC; Carburetor Type: PZ22
  • Transmission:The engine's 4-speed manual clutch transmission provides you with precise control over gear shifts, allowing you to adapt to a variety of road and terrain conditions and experience true driving pleasure. Manual transmissions cost less to maintain than automatics
  • CDI ignition and air cooling: The 125cc engine motor adopts CDI ignition, which improves fuel efficiency. The air-cooled design of the engine ensures cool performance. The air cooling system effectively dissipates heat and prevents overheating during prolonged cycling
  • Package:Here 1x 125cc 4 stroke engine, 1x kick starter lever, 1x gear shift lever, 1x carburetor, 1x intake manifold, 1x cdi, 2x intake gaskets are included in the package

Description

125CC 4-Stroke Engine4-stroke engine equipped with high power and a large fuel tank, which produces great power and helps you get the job done quickly without the need for frequent refueling.This Dirt Pit Bike Complete Kit complete with mounting accessories and simple structure, it can be assembled in a very short time.Durable EngineThe 4-stroke engine made of high quality materials and precision parts, equipped with high performance carburetor, has the advantages of simple structure, lower cost, easy maintenance, reliable and durable. Good sealing effect, safer to use.High PerformanceSingle-cylinder, four-stroke air-cooled, manually operated clutch. 92 Gasoline. Minimum fuel consumption:≤367g/kw.hMaximum torque: 8.0 Nm/5000r/min±250r/min. Idle speed: 1500r/min±100r/min. Maximum power: 6.5 kW/7500r/min±375r/min. Rated power: 5.6 kW/7500r/min±375r/min.Package Included1x 4-stroke EngineAll Accessories for InstallationComplete installation accessories and simple structure.It fits for CRF50 / CRF70 / XR50 / XR70 / Z50 / Z50R / CT70 Mini Trail / Z50 / Minitrail monkey / XL70 ST70 / QA50 / QR50 / CL70 / SL70 / 70 Pass / ST 90K2 / ST 90K1 / CS 90 / SL 90 / ZB 50.

Manufacturer: ‎Borutools


Brand: ‎Borutools


Model: ‎125CC Single Cylinder Vertical Engine


Item model number: ‎125CC-Engine


Exterior: ‎Polished


Manufacturer Part Number: ‎125CC-Engine


Date First Available: March 22, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 12 – Sep 21

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.

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Top Amazon Reviews


  • All parts advertised didn't come. No carb, Kickstart or CDI
Package was all busted apart and it was missing the CDI, kick start lever and carborator. All were supposed to come with it.
Reviewed in the United States on April 25, 2025 by Tom L.

  • Easy
Easy hook up,was ready in 45 to 50 min
Reviewed in the United States on May 3, 2025 by Jesse leal

  • Did not receive carb
Did not receive carb
Reviewed in the United States on May 4, 2025 by Tyson King

  • Installation was straightforward
This 125cc 4-stroke engine delivers impressive torque and smooth acceleration, perfect for aggressive pit biking or ATV upgrades. The manual clutch provides precise control on rough terrains, while the air-cooled design ensures consistent performance without overheating46. Installation was straightforward, and the heavy-duty construction handles intense off-road abuse effortlessly. ... show more
Reviewed in the United States on April 30, 2025 by Thomas

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