Clifford Spencer, 63, killed, after his motorcycle strikes a guardrail on Piilani Highway in Kihei.

A Kahului man is dead after crashing his motorcycle in Kihei.

Maui police say at 1:56 a.m. Friday, Clifford Spencer, 63, was riding a black Harley Davidson motorcycle north-bound on Piilani Hwy. when he lost control and hit a guardrail near Kaiwahine St.

Police say he was not wearing a helmet.

It is not known if speed, drugs or alcohol were factors in the crash. An investigation is pending.