The tech hold, now described by Kawasaki as a “sales hold,” required the first trickle of ZX-10Rs in the hands of consumers to be returned to the factory for an unexplained technical problem.

In a release last night, Kawasaki made an official announcement that the problem had been fixed, with engineers tracking the source down to the Ninja’s valve train. They explain that the intake valve spring can experience “possible surging … when the unit is operated under unique riding conditions, such as on a racetrack. The surge could cause the intake valve to seat improperly, resulting in poor engine performance.”

The solution to this issue is to replace the engine’s camshaft, valve springs, and spring retainers “to prevent the valves from surging, without affecting engine performance.”

The sales hold is expected to be lifted in late January, with sales of the ZX-10R to resume as normal.

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