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The 5 most extreme modifications ever made to a motorcycle

Modificaciones extremas

We love modifying bikes, but sometimes people get a little carried away. I bring you the most absurdly modified motorcycles I’ve found.


After many years of homologating motorcycle refurbishments I can say that I have seen almost everything.

Very very ugly motorcycles (much uglier than the original), absurd transformations and of course, real beauties.

However, there are 5 motorcycles that take the palm of the most extreme modifications, and they are the ones I want to tell you about today.

1) The motorcycle with the most cylinders in the world.

This is one of the most outlandish stories I have ever encountered in the world of motorcycle mechanics.

It caught my attention so much that I included it in our beginner’s motorcycle mechanics book.

It is the motorcycle with the most cylinders in the world, which earned it a place in the Guinness Book of Records.

It is made on the basis of a Kawasaki 250 S1, although we can find little of the original bike nowadays.

Its creator, the British Simon Whitlock, has managed to install in this small motorcycle no less than 48 cylinders, up to a displacement of 4,200 cc.

To start this herd of engines, the bike is powered by a 2-stroke 125 cc auxiliary engine.

I leave you a video in which you can see how the bike starts, and above all, how it sounds!

According to its owner, the bike is legalized and street legal. I assure you that in Spain that would be unthinkable.

2) The bike with the infinite fork

Chopper fashion has no limits, just ask the builder of this Harley-Davidson.

It was built by Hawke Lawshe of Vintage Technologies for one 2019 converted bike show.

Undoubtedly, the most striking feature is its very long fork, which ends in a fork clamp, which does not exactly look comfortable or easy to ride.

The fork ends in a 17-inch wheel, as does the rear wheel. Its chassis is custom-built from the ground up to support that tremendous fork and to house a legendary 1981 Harley-Davidson Shovelhead engine.

3) The motorcycle with the largest wheels

Why don’t we mount some tractor wheels on the bike?

Something like this must have occurred to Grewal Customs, I imagine after a night of partying, to create this Royal Enfield with tractor wheels.

They called it Blue Beast and indeed the bike is a beast.

The base on which they have built this bike is a Royal Enfield Electra but its major modification is that of its tires, which have been replaced by tractor wheels.

To do this they had to build a completely new fork and swingarm, as well as custom fenders to accommodate such huge wheels.

The handlebars were reinforced to allow the bike to turn.

4) The motorcycle that I have no words to define

I’ve been thinking for a while what title to give this bike: the weirdest bike in the world? the bike with a bigger engine than the bike?

This is a chopper dragster (a motorcycle created for drag racing) with a V8 engine from a 1971 Chevrolet. Personally it looks to me more like a vehicle for use in Star Wars pod racing.

Among its many modifications highlights its huge 8-cylinder engine, much larger than the bike itself. In order to accommodate it, the chassis was modified, the suspension was modified (its front fork belongs to a Harley Springer) and a large handlebar was installed.

It was built by Sidewinders, a garage whose motto is “the home of the world’s most dangerous motorcycles”.

In view of their creation, I can’t deny them.

As a curiosity, after each drag race they have to let it cool for 20 minutes before restarting it.

5) The most aerodynamic motorcycle in the world.

When gasoline prices go up, we have no choice but to try to reduce the fuel consumption of our motorcycles as much as possible.

This was precisely the motivation of the Dutchman Allert Jacobs to create this monster that looks more like an egg than a motorcycle.

To minimize the amount of gasoline he needed per kilometer he devised an aerodynamic shell for his Honda Innova 125i (a simple 125 cc scooter that I imagine already consumes little in itself).

Did he achieve his goal? With one liter of gasoline he drove 91 kilometers (1 liter every 100 km approximately). However, he was stopped by the police and his vehicle was impounded for not having the necessary permits to drive.


These are the most extreme and weirdest bike modifications I’ve seen, if you’ve seen something even weirder, leave me a comment.

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