Disclosed herein is an iron-type golf club head. The iron-type golf club head comprises a body, having a density of less than 8 grams-per-cubic-centimeter (g/cc). The body comprises a heel portion, a toe portion, a sole portion, a top portion, and a front portion. The body also comprises a rear portion, comprising an insert shelf, adjacent the sole portion and extending from the toe portion to the heel portion, and a retention bar, integrally formed with a portion of the insert shelf and circumferentially closing the portion of the insert shelf to define a first insert channel. The iron-type golf club head also comprises a high-density insert, having a density of greater than 7.5 g/cc, supported by the insert shelf, and retained within the first insert channel by the retention bar.

Embodiments of golf clubs head sets with varying characteristics are disclosed herein. Other examples and related methods are also generally described herein.

A golf club head includes a club face and a body. The club face is formed from a metallic material and includes a first, hitting surface, a second, rear surface that is opposite the first surface, and a flange that is separated from the second surface by a transverse distance. The body is formed from a polymeric material and includes a crown, a sole, a hosel, and a face support. The club face and the body cooperate to define a closed volume, and the face support extends to opposing sides of the flange and is operative to couple the club face to the body.

A method of customizing a golf club, wherein the method includes generating operating data representative of a user operating a mechanical device. The operating data is generated by a first sensor sized and configured to be removably positioned in a mounting port formed on the mechanical device during operation of the mechanical device. The sensor is interchangeably positionable in the mounting port with at least one mass insert, the at least one mass insert being adapted to be interchangeably positioned in the mounting to provide at least two different mass configurations. The method further includes determining a recommended configuration of the at least one mass insert specific to the user based on the operating data generated by the sensor, and transmitting information representative of the recommended mass insert.

A method of customizing a golf club, wherein the method includes generating operating data representative of a user operating a mechanical device. The operating data is generated by a first sensor sized and configured to be removably positioned in a mounting port formed on the mechanical device during operation of the mechanical device. The sensor is interchangeably positionable in the mounting port with at least one mass insert, the at least one mass insert being adapted to be interchangeably positioned in the mounting to provide at least two different mass configurations. The method further includes determining a recommended configuration of the at least one mass insert specific to the user based on the operating data generated by the sensor, and transmitting information representative of the recommended mass insert.

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head may include a body portion having an interior cavity, a front portion, a rear portion, a toe portion, a heel portion, a sole portion, and a top portion. A face portion may be coupled to the front portion and may include a front surface having a plurality of grooves with each groove extending in a first direction, and a back surface having a plurality of channels with each channel having a length and a width being substantially smaller than the length. A filler material may at least partially fill the interior cavity. The length of at least one channel of the plurality of channels may extend in a second direction different from the first direction. Each channel may be at least partially filled with the filler material and may be configured to engage the filler material to adhere the filler material to the back surface of the face portion. Other examples and embodiments may be described and claimed.

Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are generally described herein. In one example, a golf club head may include a body portion having an interior cavity, a front portion, a rear portion, a toe portion, a heel portion, a sole portion, and a top portion. A face portion may be coupled to the front portion and may include a front surface having a plurality of grooves with each groove extending in a first direction, and a back surface having a plurality of channels with each channel having a length and a width being substantially smaller than the length. A filler material may at least partially fill the interior cavity. The length of at least one channel of the plurality of channels may extend in a second direction different from the first direction. Each channel may be at least partially filled with the filler material and may be configured to engage the filler material to adhere the filler material to the back surface of the face portion. Other examples and embodiments may be described and claimed.

Embodiments of a golf club head comprising a first component and a second component that are coupled together to enclose a hollow interior are disclosed herein. The first component comprises at least a striking face, a striking face return, and a rear extension. In some embodiments, the first component also comprises a weight channel at a rear end and one or more braces that attach to the striking face return and the rear extension. The second component component comprises a crown portion, a sole toe portion, and a sole heel portion. The second component is two separate portions. The density of the second component is less than the density of the first component. In some embodiments, the first component mass is 85% to 96% of a mass of the golf club head.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, a top portion, and a lightweight crown portion covering an opening in the top portion. The crown portion may include two or more integral ribs to stiffen the crown portion. The crown portion may be a composite crown portion formed in a mold by applying heat and pressure. Other examples and embodiments may be described and claimed.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a body portion having a front portion, a rear portion, a toe portion, a heel portion, a bottom portion, a top portion, and a lightweight crown portion covering an opening in the top portion. The crown portion may include two or more integral ribs to stiffen the crown portion. The crown portion may be a composite crown portion formed in a mold by applying heat and pressure. Other examples and embodiments may be described and claimed.