Shopping Cart

Your cart is empty.

Your cart is empty.

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

4.6 (2) Write Review
Free shipping on orders over $29.99

$310.00

$ 99 .00 $99.00

In Stock

About this item

  • 【Premium Quality Construction】: The 140cc pit bike engine is crafted from high-quality aluminum alloy and cast steel, ensuring exceptional strength and durability for long-lasting performance.
  • 【Impressive Power Output】: Experience robust performance with the dirt bike engine, delivering a maximum power of 8kw and a torque of 9.5N.M, providing an exhilarating driving experience for your Honda mini bikes.
  • 【Effortless Installation】: Designed to match the original factory parameters, this 4 stroke bicycle engine kit allows for simple installation with complete accessories included, enabling you to get your vehicle running in no time.
  • 【Enhanced Performance Features】: Enjoy a powerful ride with the 140cc bike engine that enhances overall vehicle control and responsiveness, perfect for racing enthusiasts and off-road adventures.
  • 【Versatile Compatibility】: This 140cc pit bike engine 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.


Product Description

4 Stroke 140CC Engine Motor

4 Stroke 140CC Engine Motor

Fit 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

Racing Engine Motor
Material: Aluminium Alloy,Cast Steel
Type: Single-cylinder,Horizontal,Four-stroke
Gear: 1N234
lgnition: CDI
Displacement: 140cc
Bore x Stroke: 55*59mm/2.2*2.3inch
Max.Power&Corresponding Speed: 8kw(7500±375)
Max.Torque&Corresponding Speed 9.5N.M(5000±250)
Start Mode: Kick Starter
Compression: 9.0:1
Engine Oil: 900ml/30.44Oz,15W/40-SE,4 Stroke
Oil Gears: 4 Speed Manual Clutch,1N234
Sprocket: 14T 428 17mm/0.67inch

  • Yes, this engine fits for HONDA CRF50 models.

  • Some people find it simple and fast, taking about 10 minutes, while others require longer time due to lack of experience. Customers can wiring diagrams or find wiring diagrams on the product page.

  • Yes, the package includes a manifold kit package, gaskets, and screws.

  • This 140cc engine motor uses 4 stroke engine oil.

  • The maximum power of this engine motor is 8kw, which is approximately 10.7 horsepower.

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

4 Stroke 140CC Engine Motor

Merchant Video

Notes

Please allow for slight color differences caused by shooting light and errors caused by manual measurement, and make sure you don't mind before ordering.


Laura Mixon
Reviewed in the United States on March 17, 2025
Packing was awesome, very suitable for my HONDA CRF50, it looks great and great customer service!
Riley
Reviewed in the United States on April 6, 2025
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
Recommended Products
125CC Semi Auto Engine Motor, 4 Speed w/Reverse Electric Start Motor Engine for Go Kart ATV Quad Buggy Pit bike Dirt Bike Buggy Pocket Rocket

$341.00

$ 99 .00 $99.00

4.5
Select Option
Artudatech Engine Cylinder Barrel Top End Rebuild Kit Fit for Kawasaki KLX 300 KLX300 R 1996-2007, for Kawasaki KLX300 1996-2003, for Kawasaki KLX300R 1997-2007

$151.99

$ 71 .99 $71.99

4.9
Select Option
53cc Bicycle Engine Kit, 4 Stroke Chain Scooter Bicycle Gas Motorized Gasoline Engine Motor Kit, Single Cylinder Engine, Hand-Pull Start, Forced Air Cooling, Motor for Bicycles, Adult Bikes

$176.99

$ 78 .99 $78.99

4.9
Select Option
New Hot Rods Bottom End Kit Compatible with/Replacement for Honda TRX 250 TM Recon 2002-2016 CBK0186

$368.31

$ 99 .00 $99.00

4.5
Select Option
GXYWADY Cylinder Piston Gasket Top End Kit Replacement for Polaris Ranger 500 Scrambler 500 Sportsman 500 Magnum 500 3086811 3089256 3085369

$85.39

$ 41 .99 $41.99

4.4
Select Option
ATV Engine Motor, 125CC 4 Stroke Motor w/Automatic Transmission, Electric Start, 3 Forward Gears and 1 Reverse for GO Karts and ATVs

$199.99

$ 96 .99 $96.99

4.3
Select Option
cciyu Top End Rebuild Kit Cylinder Piston Rings and Gasket Replacement fit for Honda TRX500 12-19 Foreman, Rubicon 500 15-21 Pioneer 500 Cylinder Head

$94.12

$ 37 .99 $37.99

4.7
Select Option
GOOFIT 47mm Cylinder Piston Kit for 70cc ATC70 CRF70 CT70 TRX70 XR70 139QMB Engine ATV Scooter Moped Go Kart

$38.99

$ 16 .99 $16.99

5.0
Select Option