A golf club includes a head having a front body preferably made of
metallic material and a rear body preferably made of non-metallic
material. The front and rear bodies are constructed so that a crown wall
on the front body has a protruding section that mates with a recessed
section of a crown wall on the rear body. The protruding section of the
crown wall on the front body lies in a region of the club head that
experiences the highest deflection and stress during impact with a golf
ball. Therefore, the club head behaves, during impact with a golf ball,
substantially as if the rear body were formed of metallic material rather
than non-metallic material.