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Engine Motor Kit, 140CC Dirt Bike Motorcycle Engine Kit 4 Stroke Racing Engine w/CDI Ignition System Kick 8KW Electric Starter Pit Bike Kit for Honda CRF50 / CRF70 / XR50 / XR70

  • Based on 2 reviews
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Availability: In Stock.
Fulfilled by DSHUENVRL

Arrives Sep 25 – Sep 26
Order within 3 hours and 36 minutes
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Features

  • High-quality MaterialEngine Motor Kit is made of high-quality aluminium alloy and cast steel, which is strong and durable.
  • Strong PowerEngine motor complete kit maximum power of 8kw (7500375) and maximum torque of 9.5N.M(5000250) delivers an impressive surge of strength and control to the vehicle.
  • Simple InstallationMotor engine manufactured in accordance with the original factory parameters and matches your car greatly. And the complete accessories allow you to complete installation and start using it in a short period of time.
  • Energy-Saving Motor engine off-road for efficiency, this kick start engine kit not only provides powerful performance but also contributes to energy savings.
  • Applicable Models Semi-automatic strong power kick engine is use 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 / Please note this is not a guarantee, if you are unsure, please ask your local dealer.

Description

Key Features【High-quality Material】Engine Motor Kit is made of high-quality aluminium alloy and cast steel, which is strong and durable.【Strong Power】Engine motor complete kit maximum power of 8kw (7500±375) and maximum torque of 9.5N.M(5000±250) delivers an impressive surge of strength and control to the vehicle.【Energy-Saving】 Motor engine off-road for efficiency, this kick start engine kit not only provides powerful performance but also contributes to energy savings. SpecificationsMaterial: Aluminium Alloy, Cast SteelType: Single-cylinder, Horizontal, Four-strokeGear: 1N234Ignition: CDICondition: New Displacement: 140ccBore x Stroke: 55 59mm/2.22.3inMax. Power & Corresponding Speed: 8kw(7500±375)Max. Torque & Corresponding Speed: 9.5N.M(5000±250)Start Mode: Kick StarterCompression: 9.0:1Engine Oil: 900ml/30.44Oz, 15W/40-SE, 4 StrokeOil Gears: 4 Speed Manual Clutch, 1N234Sprocket: 14T 428 17mm/0.67inApplicable Models: 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 / HighlightsGood PerformanceEasy InstallationLong Service LifeElaborate DesignProfessional AdaptabilitySafety ImprovementFashion AppearanceStrong Power Notes1. Please carefully check compatibility before purchasing to ensure that the product is suitable. 2. We strongly recommend professional installation. Fits (For the reference):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 /Please note this is not a guarantee, if you are unsure, please ask your local dealer.Package Included1140CC Engine1Kick Starter Lever1Gear Shift Lever1Sprocket Cover1Washer2Gaskets1Carburetor1CDI1Intake Manifold7Screws

Brand: Marsyyds


Model Name: Engine Motor Kit


Speed: 140 cc/min


Voltage: 110 Volts


Horsepower: 8 Kilowatts


Item model number ‏ : ‎ WNVAQ7


Date First Available ‏ : ‎ July 17, 2025


Manufacturer ‏ : ‎ DSHUENVRL


Best Sellers Rank: #520,017 in Automotive (See Top 100 in Automotive) #207 in Powersports Engine Kits


#207 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: Sep 25 – Sep 26

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


  • Great Upgrade for My Pit Bike!
I recently installed this 140cc engine kit on my old Honda CRF50, and it’s been a game-changer! The power boost is noticeable right away, and the electric start works flawlessly. Installation was straightforward, though I had to tweak a few small things to fit perfectly. The CDI ignition system ensures smooth starts, and the engine runs strong even after hours of riding. Definitely worth the money if you’re looking to revive an older bike. ... show more
Reviewed in the United States on July 27, 2025 by Noemi

  • Perfect for My XR70 Project
I was rebuilding an XR70 and decided to try this engine kit. The swap was relatively easy, and the engine fired up on the first try! The 8KW power is impressive, and the engine stays cool even under heavy use. The only downside was the instructions—they’re a bit vague, so some mechanical knowledge is helpful. Otherwise, this kit is a fantastic upgrade for anyone looking for more speed and reliability. ... show more
Reviewed in the United States on July 27, 2025 by chen keren

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