Wild Looking BMW R18 ‘Bosozoku’ Custom Revealed

Untitled Motorcycles has released quite possibly the most bonkers custom motorcycle you’ll see this year, the BMW R18 Onitora, an homage to Japanese motorcycle culture and Bosozoku.

Bosozoku originated in Japan, and is a design style that normally sees inline four-cylinder bikes like CB750s and Z750s fitted with outlandish fairings, mounted at extreme angles and then adorned with lurid, often metallic flaked, paint. ​​Bosozoku bikes aren’t just to look at though, as riders of the crazy-looking machines will also modify the exhaust and intakes of the machines, increasing the exhaust noise which is then ‘played’ like an instrument with the ride balancing the bike on the throttle and clutch.

This bike has been quite a long time coming, with Autoevolution reporting that its creator, Adam Kay of Untitled Motorcycles was first approached to build a custom R18 shortly after the bike was announced. It did though take a little longer than expected to complete the bike, with Kays finding one crucial element (the bike’s distinctive fairing) being sourced by chance from a local mechanic.

The vintage CB750 fairing was then heavily modified to fit the sizable R18’s frame, with custom mounting brackets created to place the unit above the repositioned headlight of the BMW. Other modifications include an eye-catching (and uncomfortable-looking) king and queen seat, along with a revised exhaust system featuring new end cans. Finishing the bike is a suitably wild-looking paint job, with a white base highlighted by black and gold stripes and lashing of metallic flake.