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The BMW R-series is one of the most used cafe racer base bikes, and that’s for different reasons. They are cool, reliable, stand out for (German) quality, are rideable and powerful. And those air cooled  2 cylinders just sound awesome. Not forget the fact that there are tons of them still riding… But there is a small shift going on: lately I see more and more motorcycle builders selecting a BMW K-series, with a liquid cooled inline 4 cylinder (which looks like a brick).

This 1985 BMW K100 Cafe Racer is called the “K101” and is built by Impuls from Munich in Germany.

BMW K100 Cafe Racer 1

BMW K100 Cafe Racer

Phillip Wulk and Matthias Pittner from Impuls worked together on this BMW K100 Cafe Racer with artists Fabian Gatermann and Matthias Edlinger. The bike is an interpretation of “motorcycle meets art”.

BMW K100 Cafe Racer 2

BMW K100 Cafe Racer 3

The 2 named artists worked out the concept into a 3D model and created a set of polygons through manual iteration and draw them back onto the motorcycle by hand. The process of building a bike from scratch with drawing, 3D modeling and manufacturing is expanded back to the computer and a manual redrawing onto the bike.

BMW K100 Cafe Racer 4

BMW K100 Cafe Racer 5

For parts they went over to multiple sources: the swing arm and gearbox are from a K1100, the 17″ spoked front wheel is from a R100R, the 17″ spoked wheel in the rear including brake caliper and disc is from a 1150GS. For the front brake they used a Brembo master cylinder from a Ducati ST4.

BMW K100 Cafe Racer 6

BMW K100 Cafe Racer 7

The electrical heart of the bike is based around a MotoGadget v2 with a complete new wiring harness, MotoGadget m-Blaze Disc & Pin and Motoscope mini. ABM delivered the rear master cylinder, handlebars, foot controls and clutch/brake levers. Suspension is from Wilbers.

BMW K100 Cafe Racer 8

BMW K100 Cafe Racer 9

Next to these bolt-on parts they also created some one-off parts like the tail section, sub frame, seat (by Ralf Richter), air intake, exhaust, battery box, mounts, etc.

BMW K100 Cafe Racer 11

BMW K100 Cafe Racer 10

And this was the original bike:

BMW K100 original

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By Published On: May 24, 2016Categories: Cafe Racer0 Comments on BMW K100 Cafe Racer by ImpulsTags: 2.3 min readViews: 661

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About the Author: Ron Betist

Ron Betist grew up with motorcycles with a father heading the Amsterdam motorcycle police force. He has been riding (legally) for over 40 years and motorcycles are his true passion. With a life-long career in marketing and sales he has a huge international network. He joined as a contributor at BikeBrewers in 2017 to spread his word about bikes with the rest of the world.

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