BMW Inline Six Motorcycle Concept

November 10, 2009
Bart Madson
By Bart Madson
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Bashing away at the MotoUSA keyboard for nine years now, Madson lends his scribbling and editorial input on everything from bike reviews to industry analysis and motorcycle racing reports.

BMW unveiled the Concept 6 at the 2009 EICMA Milan Bike Show.
BMW unveiled the Concept 6 at the 2009 EICMA Milan Bike Show, hinting it may power a future luxury touring mount.

The EICMA Milan Bike Show debuts a number of motorcycle models, most often from the European marques. Most of the time the bikes have been spied and rumored well before the official debut, but BMW pulled off a surprise with its Concept 6 – a six-cylinder design which the Bavarian firm hints may soon power a touring motorcycle.

The Straight Six powering the Concept, says BMW, “follows the well-known Straight Four in the K1300 model series.” Not all the details are in but it’s identified as a 1.6 liter displacement via a “slightly oversquare bore:stroke ratio with relatively long stroke and very small gaps between cylinders.” Like the K-Series, the Concept 6’s cylinders are tilted forward by 55 degrees.

No hard peak horsepower or torque numbers are cited. BMW does promise, however, that 96 lb-ft of torque are available as low as 2000 rpm. And the Six revs up “almost to 9000 rpm.” Stressing its torque performance, the Concept 6 does not feature a tach at all, instead offering a digital readout of available torque production on the LED display.

BMW Concept 6 Photo Gallery

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The Inline Six engine centers the design of the Concept 6, surrounded by a “light-alloy bridge frame” that looks to be of the twin-spar aluminium variety.  BMW’s Duolever and Paralever suspension units are present and it is highlighted by their trademark shaft-drive, beefy six-piston front calipers and 17-inch stylish hoops shod with Pirelli’s latest Diablo Supercorsa sticky rubber. The Six theme carries over to the exhaust, which features a six-chamber system, three outlets on each side.

As for its future? BMW says this in its PR announcement:

“The new BMW straight-six will further expand the K-Series in the foreseeable future. The first model to be introduced will be an innovative and luxurious BMW touring machine. Reflecting the tradition of the BMW K-Series, this will of course be a genuine top-of-the-line product.”

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