A cast cup can include a forward portion of a golf club head, including a hosel, forward portions of a crown, sole, heel, and toe, and a face portion or an opening to receive a face insert. A rear ring can be formed separately from the cast cup and coupled to heel and toe portions of the cast cup to form a rigid club head body, such that the club head body defines a hollow interior region, a crown opening, a sole opening, and/or face opening. The cast cup and rear ring can be made of different materials, including various metals, composites, and polymers. Composite crown, sole, and/or face inserts can be coupled to the crown, sole, and/or face openings. Weights can be coupled to the cast cup and to the rear ring. The face can have a complex variable thickness geometry.

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 top portion, a bottom portion, a face portion, and a periphery. The bottom portion may include a forward portion and a rear protrusion at or proximate the rear portion. The rear protrusion may project downward from the periphery and extend longitudinally in a rear-to-front direction. The rear protrusion may include a front-side portion. A toe-side portion may extend rearwardly from the front-side portion towards the rear portion. The rear protrusion may also include a heel-side portion extending rearwardly from the front-side portion towards the rear portion. A weight port may be defined by the rear protrusion. 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 top portion, a bottom portion, a face portion, and a periphery. The bottom portion may include a forward portion and a rear protrusion at or proximate the rear portion. The rear protrusion may project downward from the periphery and extend longitudinally in a rear-to-front direction. The rear protrusion may include a front-side portion. A toe-side portion may extend rearwardly from the front-side portion towards the rear portion. The rear protrusion may also include a heel-side portion extending rearwardly from the front-side portion towards the rear portion. A weight port may be defined by the rear protrusion. Other examples and embodiments may be described and claimed.

An adjustable interchangeable golf club with a faceplate-based platform to receive components for enhancing and controlling various aspects that control the golf ball flight and spin characteristics. Disclosed are components for adjusting loft and bounce angle, and interchangeable faceplate and rear flange styles. Novel milled surface roughness for enhanced spin control is disclosed along with new milling methods for achieving optimal surface roughness. Lightweight hosel and consequent redistribution of mass in club head greatly increases the inertia of the golf club. Centrally located hosel position aids in club head stability on off-center hits. This results in a golf club that hits the ball higher, straighter, longer, and with increased ball spin characteristics.

An adjustable interchangeable golf club with a faceplate-based platform to receive components for enhancing and controlling various aspects that control the golf ball flight and spin characteristics. Disclosed are components for adjusting loft and bounce angle, and interchangeable faceplate and rear flange styles. Novel milled surface roughness for enhanced spin control is disclosed along with new milling methods for achieving optimal surface roughness. Lightweight hosel and consequent redistribution of mass in club head greatly increases the inertia of the golf club. Centrally located hosel position aids in club head stability on off-center hits. This results in a golf club that hits the ball higher, straighter, longer, and with increased ball spin characteristics.

Disclosed herein is a golf club head that comprises a body. The body comprises a sole portion, a crown portion, a skirt portion, and a face portion, positioned at a forward region of the golf club head, opposite a rearward region of the golf club head, and extending from a toe region to a heel region of the golf club head. At least a portion of the body is made of a titanium alloy. The golf club head also comprises a large weight, coupled to the sole portion of the body and made of a steel alloy. A mass of the large weight is at least 40% of a mass of the portion of the body made of the titanium alloy. A total mass of the large weight and the portion of the body made of the titanium alloy is at least 210 grams.

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 includes a body portion having a center cavity portion, a toe-side cavity portion, a heel-side cavity portion, a first port on the body portion connected to the toe-side cavity portion, a second port on the body portion connected to the heel-side cavity portion, a first filler material in the center cavity portion, and a second filler material in the toe-side cavity portion and the heel-side cavity portion. The toe-side cavity portion is at least partially filled with the second filler material from the first port or the second port, and heel-side cavity portion is at least partially filled with the second filler material from the first port or second port. 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 includes a body portion having a center cavity portion, a toe-side cavity portion, a heel-side cavity portion, a first port on the body portion connected to the toe-side cavity portion, a second port on the body portion connected to the heel-side cavity portion, a first filler material in the center cavity portion, and a second filler material in the toe-side cavity portion and the heel-side cavity portion. The toe-side cavity portion is at least partially filled with the second filler material from the first port or the second port, and heel-side cavity portion is at least partially filled with the second filler material from the first port or second port. Other examples and embodiments may be described and claimed.

Embodiments of a golf club head with a plurality of energy storage features are presented herein. In some embodiments, a golf club head comprises a body comprising a strike face, a heel region, a toe region opposite the heel region, a sole, a crown, a channel, a chamfer spanning between a strike face and the crown, and an internal radius transition feature from the strike face to at least one of the sole or the crown.

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 including a face portion, a rear portion, a toe portion, a heel portion, a top portion, and a bottom portion. An inner side of the face portion may have a center portion, an outer wall portion at least partially surrounding the center portion, and a plurality of inner wall portions connecting the center portion to the outer wall portion. Other examples and embodiments may be described and claimed.