It's also Euro 3 compliant, road legal. Uses GDI and a 200:1 gas to oil ratio.
Japan refuses to go back to two-strokes, even though they can be made clean. The leader on this R&D right now is Evinrude. Japan decided to never go back to two-strokes.
I'm hoping someone like KTM or Rotax revisits this.
For a great history of two strokes, read Max Oxley's "Stealing Speed: the biggest Spy scandal in motorsport history". Great stories about how the modern two stroke was perfected by ex-Nazi rocket engineers working for MZ in Communist Germany, and how Suzuki stole all of the technology.
Suzuki stole nothing, they bought it from a CZ factory rider working for a company that didn't believe in patents.