TOKYO (Reuters) -- Shares of Japanese supplier Takata Corp (7312.T) plunged 21 percent on Thursday, extending a sharp fall from the day before when top customer Honda Motor Co (7267.T) said it would stop buying a component at the heart of a multi-million-vehicle recall.

Takata slid to 936 yen in early Tokyo trade, the lowest level since April 2009. The shares have fallen by nearly a third over the last two days.

Takata faces fresh questions over its future after Honda, in a harshly worded statement on Wednesday, said it would no longer use its front air bag inflators. Business ties between the two date back decades, with the automaker holding a small stake in Takata.

(Reporting by Chang-Ran Kim; Editing by Stephen Coates)