A golf club head has a body defining a ball striking face. The body further has a rear portion comprising a plurality of side walls and a planar lower portion. The plurality of side walls extend downward from a top of the golf club head towards the planar lower portion. The body further comprises a cover extending over the rear. The body further defines a gap between the cover and the planar portion.

A golf club head and golf club having a large volume, large head dimensions, and/or large face characteristics, as well as unique mass property attributes driven by relationships not often considered in conventional club head design, to achieve a resistance to squaring the club head during a golf swing that is comfortable to the novice golfer, stability during off-center impacts, and preferred launch characteristics. This is achieved in part via establishing a club head configuration and associated center of gravity location that results in a preferred magnitude of Delta1 and Delta2 values, CG angle, moments of inertia, and associated ratios, relationships, and club head mass property characteristics influenced by these variables, to account for the scale of the club head and achieve improved performance.

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 with an interior cavity and a port having an opening to the interior cavity. A polymer material is injected into the interior cavity from the port. The golf club head may further include a first mass portion and a second mass portion. The first mass portion may have a first end, a second end, and a first mass portion distance between the first end and the second end. The second mass portion may be coupled to the back wall portion below a horizontal midplane of the body portion. The second mass portion may include a first end, a second end, and a second mass portion distance between the first end and the second end. The total mass of the second mass portion may be greater than a total mass of the first mass portion, and the second mass portion distance may be greater than the first mass portion distance. Other examples and embodiments may be described and claimed.

A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located between the face and the apex, wherein each adjacent pair of crown turbulators is separate and spaced apart to define a space between the adjacent pair of crown turbulators.

A golf club head includes a face portion, a crown portion, a sole portion and a hosel portion. The head includes a head body formed by a metallic material and a cover member formed by a material having a rigidity lower than that of the metallic material forming the head body. The head body includes an opening and a beam part that extends so as to intersect the opening. The opening is covered by the cover member. The beam part includes an inward bending portion that is bent so as to project inward of the head. The head body includes bent portions located at respective two end portions of the beam part.

A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located at least partially between the leading edge and the apex, wherein the height of each turbulator decreases from the leading edge toward the rear portion.

A hollow-type golf club head, when oriented in a reference position, includes: a striking wall; a sole portion; a top portion having an exterior surface and an interior surface; a hosel extending from the top portion and defining a hosel axis; and a plurality of external ribs located on the exterior surface of the top portion. The plurality of external ribs are each generally elongate in a front-to-rear direction, and at least one internal rib is located on the interior surface of the top portion and is generally elongate in the front-to-rear direction. The at least one internal rib is spaced from the plurality of external ribs by a distance D1 no less than 2 mm as considered in top view of the club head.

A golf club head includes a crown surface having an apex at a highest point and extending between the face, the rear, the heel and the toe of the golf club head. The golf club head also includes a plurality of crown turbulators projecting from the surface of the crown and located at least partially between the leading edge and the apex, wherein the height of each turbulator decreases from the leading edge toward the rear portion.

Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a set of golf club heads includes a plurality of golf club heads with ach golf club head having a distinct loft angle ranging from 19.5° to 47°. Each golf club head produces a loudness as a result of striking a golf ball at a predetermined golf club head speed. The loudness is in sone units and is based on a sound pressure measurement performed at a predetermined sampling rate and taken for a fixed duration of time with a microphone placed directly above the golf ball at a fixed vertical distance. For a golf club head speed of 80 mph, the loudness of each golf club head ranges from 82.58 to 92.76 sones and is inversely related to loft angle. For a golf club head speed of 85 mph, the loudness of each golf club head ranges from 86.85 to 97.07 sones and is inversely related to loft angle. For a golf club head speed of 90 mph, the loudness of each of golf club head ranges from 92.90 to 101.82 sones and is inversely related to loft angle. Other examples and embodiments may be described and claimed.

Described herein is a golf club head comprising a sheet composite midbody, a filled thermoplastic composite weight seating portion, and a removable weight. The weight seating portion can comprise a weight channel within which the weight can be repositioned to alter the fade or draw bias of the club head. The golf club head can further comprise a front body with a perimeter surrounding frame. The midbody can be connected to the front body. The weight seating portion can be co-molded to the midbody.