There was a time when a small-displacement inline-four sportbike wasn’t an exotic proposition. You bought something compact, revved it to the moon and back, and generally behaved like every freeway on-ramp was qualifying at Suzuka. Most manufacturers have since decided parallel-twins make considerably more financial sense.
China’s ZXMoto apparently missed that meeting, because the 500RR is a 470cc four-cylinder screamer making 84 horsepower at 13,500 rpm.
