To build the Husqvarna Nuda 900, the Swedish brand started with the 798cc motor from the BMW F800 series, and then bored and stroked the parallel-twin motor to a 898cc displacement. Through its marketing of the Nuda 900 & Nuda 900R, BMW has been sure to include itself, making sure that the connection of BMW’s trusted road-going heritage is tied to the previously dirt-only brand of Husqvarna. It’s been an interesting process for both brands to say the least, the product of which we haven’t even begun to fully realize.

Taking a reversal on the process between BMW and Husqvarna, our friend Luca Bar (check out his site here) is back with another concept bike. Designing what he calls a BMW F900S, Luca has taken the F800S aesthetic and imagined it with the newly-revised 900cc motor from the Husqvarna Nuda. Not stopping just at the revised motor though, his F900S also gets some trellis-frame love, which the Nuda used in lieu of the F800’s twin-spar frame design. Adding in some updated bodywork, the total package looks very clean. More photos after the jump.