Golf club head with improved inertia performance and removable aft body coupled by metal-composite joint

A golf club comprised of a golf club head, a shaft having a shaft axis coupled to said golf club head at a first end of said shaft and a grip coupled to said shaft at a second end of said shaft, wherein said golf club head comprises:

• a frontal portion comprised of metal comprising a striking face having a face center located at a forward portion of said golf club head;
• a rear portion comprising a thermoplastic material selected from the group consisting of polyetherimide, polyether ether ketone, polyphenylene sulfide, polysulfone, polyacryletherketone, polyetherketoneketone and polyvinyl chloride and located aft of said striking face comprising a crown at an upper portion of said golf club head and a sole on a bottom portion of said golf club head;
• an internal weight member coupled to said rear portion;
• a weight retaining pocket coupled to said internal weight member;
• and
• an external weight member coupled to said weight retaining pocket;
• wherein an x-axis is defined as a horizontal axis tangent to said face center with a positive x direction towards a heel of said golf club head, a y-axis is a vertical axis orthogonal to said x-axis with a positive y direction towards said crown of said golf club head, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward;
• and
• wherein said golf club head has a moment of inertia about said y-axis (MOI-Y) passing through a center of gravity (CG) of said golf club head, said golf club head has a moment of inertia about said z-axis (MOI-Z) passing through said CG, and said golf club head has a moment of inertia about said x-axis (MOI-X) passing through said CG.

A golf club comprised of a golf club head, a shaft having a shaft axis coupled to said golf club head at a first end of said shaft and a grip coupled to said shaft at a second end of said shaft, wherein said golf club head comprises:

• a frontal portion comprised of metal comprising a striking face having a face center located at a forward portion of said golf club head;
• a rear portion comprising a polyphenylene sulfide having a crystallinity of greater than 40% and located aft of said striking face comprising a crown at an upper portion of said golf club head and a sole on a bottom portion of said golf club head;
• an internal weight member coupled to said rear portion;
• a weight retaining pocket coupled to said internal weight member;
• and
• an external weight member coupled to said weight retaining pocket;
• wherein an x-axis is defined as a horizontal axis tangent to said face center with a positive x direction towards a heel of said golf club head, a y-axis is a vertical axis orthogonal to said x-axis with a positive y direction towards said crown of said golf club head, and a z-axis being orthogonal to both said x-axis and said y-axis with a positive z direction extending forward;
• and
• wherein said golf club head has a moment of inertia about said y-axis (MOI-Y) passing through a center of gravity (CG) of said golf club head, said golf club head has a moment of inertia about said z-axis (MOI-Z) passing through said CG, and said golf club head has a moment of inertia about said x-axis (MOI-X) passing through said CG.