Golf club heads and methods to manufacture golf club heads

An iron-type golf club head comprising:

• a body portion comprising an interior cavity, a toe portion with a toe portion edge, a heel portion with a heel portion edge, a front portion, a back portion with a back opening portion, a top portion with a top portion edge, and a sole portion with a sole portion edge;
• a first port connected to the interior cavity;
• a back cover portion removably attached to the body portion to close the back opening portion, the back cover portion including a second port located at or proximate to a center portion of the back cover portion;
• a first mass portion having a first total mass, the first mass portion configured to close the first port;
• a second mass portion having a second total mass, the second mass portion configured to close the second port;
• and
• a filler material injected into the interior cavity from the first port,
• wherein the second total mass is at least twice as much as the first total mass.

A golf club head comprising:

• a first mass portion;
• a second mass portion;
• a third mass portion;
• a body portion including an interior cavity, a toe portion with a toe portion edge, a heel portion with a heel portion edge, a front portion, a back portion with a back wall portion, a top portion with a top portion edge, and a sole portion with a sole portion edge, the back wall portion comprising:
• a first port configured to receive the first mass portion, a distance from the first port to the toe portion edge being less than a distance from the first port to the heel portion edge;
• a second port located at a center portion of the back wall portion and configured to receive the second mass portion;
• and
• a third port configured to receive the third mass portion, a distance from the third port to the toe portion edge being greater than a distance from the third port to the heel portion edge;
• a filler material at least partially filling the interior cavity,
• wherein at least 50% of the back wall portion comprises a material having a density lower than a material of the body portion, and
• wherein a total mass of the second mass portion is greater than a total mass of the first mass portion and the third mass portion.