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The Tokyo Motorcycle Show wrapped up this weekend, but the Mugen Shinden Nana isn’t the only surprise that the Japanese brand has in store for us. Mugen also debuted this interesting engine concept.

Mugen is pretty tight on details, but word out of Tokyo is that this is a 1,400cc, four-valve, air-cooled, push-rod motor design that Mugen is considering putting into production as a crate engine for bike builders, with a delivery date somewhere in 2020. 







Motus Motorcycles looks to be working on its second motorcycle model, as a naked prototype of the Motus MST has been making appearances on the American brand’s social media channels, including a very tasty video of the bike testing a 4-2-1 Akrapovic exhaust on the dyno (watch it, after the jump).

We reached out to Motus about its latest project, and the company confirmed its interest in making a naked version of the Motus MST sport-tourer, though it is waiting to see the feedback from other Motus owners and potential customers before committing to make the machine.

Still, Motus is teasing some very intriguing performance specs and design elements, which is more than whetting our appetite.













Motorcycle upstart Motus Motorcycles continues to press forward with its MST-01 sport-tourer, and has released a video that talks more about the development of their 1645cc gasoline direct-injection V4 motor: the KVM4. Balking at the advice of others not to build their own powerplant, Motus has teamed up with Katech to design an in-house motor for the Motus MST-01.