BMW K100 Nightcrawler from Crooked Motorcycles

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BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

BMW K100 Nightcrawler from Crooked Motorcycles

BMW K100 Nightcrawler from Crooked Motorcycles

BMW K100 Nightcrawler from Crooked Motorcycles

BMW K100 Nightcrawler from Crooked Motorcycles

11 pictures

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

1/11
Everything that has to do with the tank, the airbox and the injection at a K should be treated with caution. The foursome doesn’t like tampering with the named components at all.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

2/11
Client Murat designs the conversion on the PC together with a designer, including the heavy tank. Its 3D data is used to cut the individual parts down to the millimeter using a water jet. A masterpiece by Fred Flitzefub on the welding machine, later the tank cover is ready.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

3/11
Very important when converting a K: Have a plan of what to do with the rear. The steeply sloping frame tubes make it difficult to keep the line.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

4/11
Jakob Muller and Dominikus Braun are the makers behind Crooked Motorcycles based in Memmingen.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

5/11
Crooked welded the rear frame itself and installed a narrow scrambler bench.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

6/11
When BMW developed the K, they probably thought that it would make sense to screw really thin manifolds onto such a huge engine and put the muffler as close as possible to the rear cylinder.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

7/11
Crooked does not create any problems here either and adapts a Cobra pot to the existing manifold.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

8/11
If you want a spoke at the back, you either have to have a good wheel builder for the Standard K or do it like Crooked: install the complete final drive and gearbox of a K1100, as the spoke rims of a BMW GS fit here. The new swing arm also received something from Wilbers for damping.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

9/11
The chassis of the K 100 really doesn’t leave a stone on top of one another.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

10/11
The standard cast wheels should give way to authentic spoked wheels. This is still feasible in the front with a USD fork from Wilbers in new triple clamps.

BMW K100 Nightcrawler from Crooked Motorcycles
Crooked Motorcycles

11/11
With the rear light, the men do everything right and have acrylic glass bars lasered, which are then supplied with LED light under the bench and bring this uniform light effect.

motorcycles

BMW K100 Nightcrawler from Crooked Motorcycles

BMW K100 conversion
Nice refueling in the Allgau

Crooked Motorcycles from Memmingen take on the BMW K100 and give it a tank in the style of the Lockheed F117 Nighthawk stealth bomber.


Jens Kratschmar

December 17, 2020

Original sound from the editorial conference: “I think the tank is awesome, otherwise I only have vile words for a K left.” And I still stand by it. Even if I have to admit, the Crooked Motorcycles Nightcrawler makes me slide nervously on the chair as a whole.

That with the K-models from BMW, the author and mutual love will probably never work out. At the beginning of the K wave in the middle of the second decade of the new millennium, the results of the rebuilding craze on cheap K’s from Munich-Spandau were too terrible. That shapes, the pain runs deep.

So it has been all the nicer recently to see more and more really good K-ists based on the BMW with the formative engine. The nightcrawler from Crooked Motorcycles from Memmingen is one of them. The reason: The guys know exactly where to screw a BMW K, where to leave your fingers off or what to do to make it work anyway.


BMW K100 Nightcrawler from Crooked Motorcycles


Crooked Motorcycles

Jakob Muller and Dominikus Braun are the makers behind Crooked Motorcycles based in Memmingen.

Better leave your fingers off

Everything that has to do with the tank, the airbox and the injection at a K should be treated with caution. The foursome doesn’t like tampering with the named components at all. Crooked leaves the original tank untouched towards the frame and concentrates on the visible part. Client Murat designs the conversion on the PC together with a designer, including the heavy tank. Its 3D data is used to cut the individual parts down to the millimeter using a water jet. A masterpiece by Fred Flitzefub on the welding machine, later the tank cover is ready.

The individual air filters, which are often mounted on the injection, turn the brick, which is not very lively anyway, into a sleeping pill, a K reacts very sensitively to any change in the amount of air. Crooked does it better here and only works on the original airbox optically, so even the bitchy air flow meter can no longer complain. For a better line, the tank is then only mounted a little higher.


BMW K100 Nightcrawler from Crooked Motorcycles


Crooked Motorcycles

Client Murat designs the conversion on the PC together with a designer, including the heavy tank.

Where you should lend a hand urgently

Very important when converting a K: Have a plan of what to do with the rear. The steeply sloping frame tubes make it difficult to keep the line. Actually, the only thing that helps here is to go all out and do everything anew. Or: How Crooked make a virtue out of necessity and technically pretzel the rear end. With the rear light, the men do everything right and have acrylic glass bars lasered, which are then supplied with LED light under the bench and create a uniform light effect. Crooked welded the rear frame itself and installed a narrow scrambler bench.


BMW K100 Nightcrawler from Crooked Motorcycles


Crooked Motorcycles

With the rear light, the men do everything right and have acrylic glass bars lasered, which are then supplied with LED light under the bench and bring this uniform light effect.

Where you actually don’t do anything K-ann

When BMW developed the K, they probably thought that it would make sense to screw really thin manifolds onto such a huge engine and put the muffler as close as possible to the rear cylinder. Problem recognized: There is little to be gained from the K when it comes to exhaust gas and its beautification. It is best to leave it as it is, as the issues of airbox and injection can be traced directly on the exhaust side. Crooked does not create any problems here either and adapts a Cobra pot to the existing manifold.

Where a lot has been done

The Nightcrawler from Crooked not only has a tank in a stealth look, but hides its technical highlights not very strongly, but effectively. With the chassis of the K 100, no stone is left unturned. The standard cast wheels should give way to authentic spoked wheels. This is still feasible at the front with a USD fork from Wilbers in new triple clamps. The rim of an R 100 RS is now turning here.

If you want a spoke at the rear, you either have to have a good wheel builder with the Standard K or do it like Crooked: install the complete final drive and gearbox of a K1100, as spoke rims of the BMW-GS fit here. The new swing arm is also given something by Wilbers for damping.


BMW K100 Nightcrawler from Crooked Motorcycles


Crooked Motorcycles

The chassis of the K 100 really doesn’t leave a stone on top of one another.

Conclusion

I revise: “I still find the tank awesome and for the rest of the K I find more and more conciliatory words”. And the Crooked conversion helps a lot. Optics and technology are fun to look at. Before now the advertisements are searched for K models. Better to sit down, because these BMWs are no longer cheap either.

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