The new generation of 140cc engine from the YX factory. The factory claim 14bhp at the flywheel from this engine & thats with a stock magneto and not with a rotor kit. Before considering purchasing this engine there are a few things you need to know, your exhaust must have an internal bore of at least 28mm, your back wheel must be heavy duty otherwise it will rip your sprocket clean off.

Why are our engines different to other sellers engines? 

Other seller engines-

Engines are sold boxed, un-opened and unchecked and with no adjustments carried out which if left unchecked could cause potential problems and furthermore serious damage. 

Our engines- 

We carry out a full inspection to ensure all components are present and make all adjustments  "Which are always required" to timing and valve clearance settings. We drain the transport oil which is not suitable to use for running your engine.

What does this mean for me?

This means your engine can be fitted straight into your bike with the peace of mind that a professional technician has set it up to run perfectly for its breaking in period, which is the most important point of the engines life....... just add good quality 10w/40 semi synthetic motorcycle oil and away you go. 

Engine can be used to upgrade the following-

Pit Bikes, Honda Dax, ST, SS, CUB, Monkey, Z50, Mini Trail, Chaly, ATC 70, ATC 90, the list goes on and on!

Comes complete as follows-

-Complete 140cc engine 14 HP

-All-up 4 speed manual gearbox

-Removable side cases

-Output sprocket

-Kick start

-Gear selector lever

-12v coil stator (for lighting if required)


-Inlet manifold with spacers, gaskets and bolts

-Mikuni VM26 (26mm) carburettor

-Twin foam 2 stage air filter

-The engine is compatible with a 5 pin CDI

These engines are 440mm long, 280mm wide. Top mounting is 93mm wide with an 8mm bolt hole, Rear mounting hole is 82mm wide with an 8mm hole. They also have the 4 M8 threaded holes on the underside which are 88mm apart left to right and 44mm apart front to back, These are to hole centers.

Please note: All our engines need to go through a braking in procedure.

Please follow the engine installation guide we include as this will helps you in setting up and getting the most from your new engine.

Here is a message from a happy chappy who purchased one of the Honda clone engines for a near 2000 mile European trip.

"Just thought I'd let you know, I have just completed an 8 day tour of Europe on my Honda Cub fitted with one of your Lifan 110 4 speed semi auto engines. It ran perfectly for the 1,939 miles of the trip. Speeds were mainly between 43-50mph. It is still as quiet as a mouse and used no oil (I did have an oil cooler fitted). Countries visited, in order, were :- France, Belgium, Luxembourg, France, Germany, Czech Republic, Germany, Austria, Germany and finally France. Was I worried it would make it...YES am I worried now....No. Another Lifan engine also made it, one of your 125 manual clutch jobbies.. If you want to read about the trip let me know as it is posted on a web site. Thanks for a great engine...Bogger" HERE IS THE LINK TO THE TRIP

YX 140cc Engine Kit (Manual)

*********FREE SHIPPING*********

 Sold Out 

Current Reviews: 0

Customers who bought this product also purchased...