I would think that the market niche for this engine is really dual-sport -- this is the engine that could do for Aprilia what the SV-650 did for Suzuki -- create an instant classic -- and also be a lightweight answer to the porky BMW F-650 and the ancient Kawasaki KLR 650. Even better -- imagine a bike like this in the Paris-Dakar weighing in at less than the KTM 660 singles with better reliability, less vibration, and comparable power with the potential for serious power tweakage.