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ZXTDR Lifan 140cc Engine: XR50 CRF50 70 Bike | N1234 Racing Engine

ZXTDR Lifan 140cc Engine Motor for XR50 CRF50 XR CRF 50 70 ATC70 Dirt Pit Bike Motorcycle | N1234 Gear 4 Stroke...
  • High performance Lifan 140cc engine, N-1-2-3-4 Gear, manual clutch, 4 stroke 4 speed
  • Replacement upgrade for XR50 CRF50, and other most popular dirt bikes
  • This kit comes with engine, starter & gear lever, manifold kit, Carburetor, Air Filter, Wire harness, CDI, Ignition coil, Clutch Cable
  • Easy to hook everything up: Just remove your existing engine and reverse the process to put the new one in
  • See below Product Description for more specifications.

Last update on 2023-11-29 / Images from Amazon Product Advertising API

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The Perfect Upgrade for Your Dirt Bike: ZXTDR Lifan 140cc Engine Motor


Imagine the thrill of racing on your dirt bike, the wind in your face, and the adrenaline pumping through your veins. Now, picture enhancing that experience with the powerful and reliable ZXTDR Lifan 140cc Engine Motor. Designed for XR50 CRF50 XR CRF 50 70 ATC70 Dirt Pit Bike Motorcycles, this 4-stroke racing engine is the ultimate upgrade that will take your riding to new heights.

Powerful Performance and Reliable Build:

The ZXTDR Lifan 140cc Engine Motor packs a punch with its impressive specifications. With a displacement of 140cc and a single cylinder, horizontal design, this engine ensures powerful performance on the tracks. The 4-stroke, OHC racing head and oil cooling technology guarantee optimal heat dissipation and engine longevity. Its 2-valve configuration further enhances its racing capabilities, giving you an edge against your competitors.

Boasting a compression ratio of 9.47:1, this engine delivers unrivaled power and torque. At 8kw (7500±375) of max power and 9.5N.M (5000±250) of max torque, you can expect thrilling acceleration and top speeds on any terrain. The manual clutch and N1234 gear system provide seamless shifting and complete control over your bike for a truly exhilarating ride.

Easy Installation and Comprehensive Kit:

Thanks to its user-friendly design, installing the ZXTDR Lifan 140cc Engine Motor is a breeze. This engine kit comes complete with everything you need to get your bike up and running in no time. From the Lifan 140cc engine and kick starter lever to the intake manifold and carburetor, every component is included for a hassle-free installation process.

Unparalleled Value and Versatility:

The ZXTDR Lifan 140cc Engine Motor provides exceptional value as it is a replacement upgrade for the popular XR50 CRF50 and other similar dirt bikes. By investing in this engine, you are not only improving your bike’s performance but also ensuring compatibility with widely supported models.

Enhanced Riding Experience:

What sets the ZXTDR Lifan 140cc Engine Motor apart is its ability to start in any gear, thanks to its 4-speed manual clutch system. Say goodbye to the limitations of starting in first gear, as this engine empowers you to kickstart your adventure from any gear. The 15T 428 chain sprocket ensures smooth power delivery and optimal gear ratios for a memorable on-track experience.

With a dimension of 470 x 275 x 280mm and a weight of 23kg, this engine strikes the perfect balance between performance, size, and weight. Its compact design does not compromise on power or reliability, making it an ideal choice for both professional racers and enthusiasts.


For those seeking to elevate their dirt bike experience, the ZXTDR Lifan 140cc Engine Motor is a must-have accessory. Its powerful performance, user-friendly installation process, and comprehensive kit make it a top choice for anyone looking to enhance their bike’s capabilities. With its unrivaled value and unparalleled versatility, this engine motor brings new life to your dirt bike. Upgrade today and prepare to leave your competition in the dust.

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