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United Express Distribution  |  SKU: ENGN-0140

Lifan 140cc 4-Stroke Engine Kit, Oil-Cooled, Kick Start, 4-Speed, for XR50, XR70, CRF50, CRF70, SDG and SSR Pit Bikes, Black

Regular price $359.97


Pickup available at 2875 N Berkeley Lake Rd NW #4

Usually ready in 1 hour

Will it fit your machine?

Not sure? Text or email a photo of your old part or your engine model number. We'll confirm it fits before you buy.

Delivery and Shipping

Ships from our Duluth, Georgia warehouse.

Most in-stock orders ship the same business day. UPS orders placed before 3:00 PM ET, USPS orders before 12:00 PM ET. After the cutoff, they go out the next business day.

Standard delivery runs 2 to 6 business days to most US addresses. US territories take 7 to 14. These are carrier estimates, not guarantees.

Free shipping on most parts, no minimum order. Oversized items (body kits, wheels, tires, batteries, and engines) are quoted to your address and shown at checkout before you pay.

We ship UPS and USPS, and email your tracking number as soon as the order leaves.

Questions? Call or text 404-532-9833. Full details on our Shipping page.

Description

Experience the ultimate power upgrade for your dirt pit bike with the Redcap Lifan 140cc 4-stroke engine. Designed for XR50, XR70, CRF50, CRF70, ATC70, SDG, SSR, and similar models, this engine delivers unparalleled performance and durability. Boasting a high-quality aluminum cylinder head, reinforced kick starter axle, and oversized valves, it make certain optimal reliability on any terrain. With its oil-cooled design and high-quality 4-disc clutch, this engine provides seamless power delivery and accurate control for an exhilarating riding experience. At 8 kW/12 hp and 7500 rpm, it offers triple the performance of a standard CRF50 engine, making it the top choice for tuning and racing enthusiasts.
  • High-Performance Engine: Upgrade your pit bike performance with the Redcap Lifan 140cc 4-stroke motor, meticulously crafted to offer unparalleled power and reliability. Compatible with a range of models including XR50, XR70, CRF50, CRF70, ATC70, SDG, SSR, and more, it make certain an exhilarating ride on any terrain.
  • Durable Construction: The engine is meticulously crafted with a high-quality aluminum cylinder head, fortified kick starter axle, and generously sized valves and canals. This construction provide exceptional durability and peak performance, meeting the demands of both tuning aficionados and competitive racers alike.
  • Efficient Cooling System: With its innovative oil-cooled design, the Lifan 140cc engine make certain optimal operating temperatures, providing reliable performance even in the most demanding off-road environments. This feature not only enhances the engine's longevity but also boosts overall reliability, making it a trusted choice for adventurous riders.
  • Smooth Clutch System: The engine boasts a premium 4-disc clutch, delivering smooth power transmission and precise engagement for enhanced control on the trails. Riders can enjoy a responsive and enjoyable riding experience, whether tackling rugged terrain or pushing the limits on the track.
  • Installation: While installation of the Lifan 140cc engine is straightforward, it's crucial to note that no installation instructions are provided. For optimal results and safety, it's highly advised to enlist the expertise of professional personnel to ensure proper installation and functionality.
Specs:
  • Type: 1-cylinder, horizontal, 4-stroke, oil-cooled kick start, Gear: 1N234
  • Bore x Stroke: 55mm x 59mm
  • Max. Power & Corresponding Speed: 8kw(7500±375)
  • Max. Torque & Corresponding Speed: 9.5N.M(5000±250)
  • Start Mode: kick start
  • Compression: 9.0:1
  • Engine Oil: 900ml, 15W/40-SE, 4 stroke
  • Oil GEARS: 4 SPEED MANUAL CLUTCH, 1N234
  • SPROCKET: 15T 428 CHAIN
  • Dimension: 470 x 275 x 280mm
  • Lubrication: 1.1 liters, 15W/40 4-stroke motorcycle oil, pressure and splash
  • Fuel: Unleaded
Includes:
  • 1 x LIFAN 140CC ENGINE
  • 1 x Kick Starter Lever
  • 1 x Gear Shift Lever
  • 1 x Manifold set Package
Known to Fit:
  • For XR50 CRF50 XR CRF 50 70 ATC70 SDG SSR Dirt Pit Bike
  • High Performance, 140cc 4 Stroke 4 Speed Complete Racing Engine, a Bolt-In Replacement/ Upgrade for the Xr50/ Crf50
Note: Before placing an order, please verify the specifics in the photos, your part number, and our fitment.

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