China's ZXMoto 500RR Takes On the 'Forgotten Formula' With 84-HP Inline-Four

As a CBR650R owner, this quietly catches my attention.

If the price ends up around half of a domestic bike at this performance level, that's a genuine threat.

84hp works out to 168hp per liter — impressive just going by the raw number.

'The forgotten equation of small-displacement multis' is a great way to put it.

These numbers look fully intent on going head-to-head with the ZX-4RR.

An inline-four revival with the 500RR is enough to get anyone's heart racing.

A 500cc inline-four is romantic, but is durability and serviceability actually going to hold up?