You can build a motorcycle for a lot of reasons, sometimes there's a theme or style like a cafe racer or maybe a street tracker, but other times a builder just does what he wants and that's what we have here, the Proboost M1. I noticed it while looking over the bikes for sale and it made me smile. It looks like it was built to highlight the Proboost Turbosystems business so the builder tossed out the rulebook and started welding.
The engine is a 3,982cc BMW V8. I'm not familiar enough with BMWs to know which model served as the donor, but, though it's big, there aren't a lot of exterior accessories hanging outside the engine itself.
The suspension is doubled up everywhere, twin Hayabusa forks up front and twin Ohlins shocks on each side in the rear. There are, of course, twin Proboost TD05 turbochargers.
The driveline is very simple, a mechanical clutch and direct drive, with this engine, why shift?
You can't really critique this build by saying it's not practical or it won't handle or it's too heavy, because this is a rolling billboard for his company, nothing else, and for that purpose I believe he's succeeded. More photos over on eBay. Oddly enough, I kinda like it.