
In typical american style, it's a 1650cc V4 OHV (i.e. pushrod) engine producing 165 bhp with maintenance free valve train (hydraulic lifters etc.) -- i.e. half a 3.3 litre V8. It also has some pretty high-spec running gear (Ohlins forks, forged aluminium wheels, Brembo radial brakes).
It also has a humungous price tag - $30k for the base model, $36k for the 'R' model, which has Ohlins rear shock, 185 bhp motor, Brembo Monobloc calipers and carbon fibre (I kid you not) wheels. Torque on both models will rip your arms out and leave bleeding stumps. Allegedly.
I quite like it. Apart from the price (obviously).
Further details here:
http://www.motusmotorcycles.com/mst-01.html