The Great Big Berth Epic driver offers a shift in the way the head and face behave to enhance power through Jailbreak Technology and the clubhead’s Exo-Cage/triaxial carbon construction.
Jailbreak Technology is used to change the fundamental way the head and clubface behave at impact to deliver more ball speed and distance via the key structural components of a metalwood – crown, sole and face – each bend, flex and rebound at impact.
Because they’re connected, they influence each other’s dynamics. Jailbreak Technology is used to make the face more efficient by focusing the energy of head back into the ball, or “energy lensing” for increases in ball speed.
Jailbreak positions two light (3g), strong titanium bars behind the face, parallel to each other and connected on either end to the crown and sole.
The size, strength and position of each Jailbreak bar work together to reduce how much the crown and sole deflect to allow the face to take on more of the load created at impact than ever before.
That results in faster ball speed across a drastically larger area of the face to promote more average distance from swing to swing. Player testing has shown that Jailbreak Technology boosts ball speed by up to two mph.
Epic’s clubhead consists ofnew aerospace-grade titanium Exo-cage outfitted with a crown and sole panels made of triaxial carbon, a light and strong composite material developed by Callaway.
Nearly half of the head’s surface, 46 per cent, consists of triaxial carbon, with the crown weighing just 9.7 g and the sole just 5.8 g.
Epic’s multi-material structure is designed to be light and strong, with high MOI and a low CG for ease in launching the ball high with low spin.
Epic’s increased shot-shape control is based in Callaway’s Adjustable Perimeter Weighting technology, a feature that allows golfers to quickly and easily adjust the club to fit their swing.
Compared to previous Callaway drivers, Epic’s track has been redesigned and the sliding weight has been increased to 17 grams for a full 21 yards of shot-shape correction (a 22 per cent increase compared to Great Big Bertha) to dial in straighter, more accurate flight while maintaining high MOI.
Head speed gets an additional boost from Callaway’s proven Speed Step technology. Designed with the help of aerospace experts, the Speed Step, located on the crown, improves head aerodynamics for more speed and distance without swinging harder.
Callaway engineers paid particular attention to the shape, aesthetics and acoustics to make Epic pleasing to the eye and the ear.
The shape is sleek, aerodynamic and confidence-inspiring. The triaxial carbon weave visible on the rear half of the crown, along with the vibrant green highlights, give Epic a pleasing appearance.
Four premium stock shafts are available, each engineered to promote a formidable combination of speed, power, stability, feel and control. Those include HZRDS, Diamana, Fuji, and Rogue in four weight classes – 40g, 50g, 60g, 70g.
Epic Fairway Woods
Like the new Epic drivers, GBB Epic fairway woods incorporate triaxial carbon composite material to enhance forgiveness, power and accuracy.
Epic’s triaxial carbon crown weighs just 5.8 g, making it 78 per cent lighter than a steel crown.
The saved weight is redistributed into strategic locations within the head to maximize MOI and lower the CG, for ease in launch.
Distance is enhanced by a clubface that boasts an expansive zone provided by Hyper Speed Face Cup technology.
The fourth generation of Hyper Speed Face Cup features a thin and flexible rim around the inner side of the face flexes to release more uniformly and efficiently at impact to increase ball speed across the face.
Distance is further boosted by Callaway’s Speed Step technology. Designed with the help of aerospace experts, the Speed Step, located on the crown, improves the head’s aerodynamics to promote more speed and distance without swinging harder.
A broad lineup of lofts is available, ranging from a strong 3+ wood (14 degrees) to the versatile Heavenwood (20.5 degrees). Stock shaft options include Project X HZRDUS, Fujikura Pro, Diamana M+ Green and Rogue M•AX
Epic Sub Zero Driver
GBB Epic Sub Zero is designed to offer a true paradigm shift, a powerful, low-spinning driver that’s also very forgiving with its high speed/low-spin characteristics.
Key to Epic Sub Zero’s performance is patent-pending Jailbreak Technology, which changes how the head and face behave to increase ball speed and distance. See above for more on that.
Epic Sub Zero’s forgiveness – 43 per cent higher than Big Bertha 816 and 22 per cent higher than M1 — comes from a multi-material construction that combines a titanium Exo-Cage with crown and sole panels made of triaxial carbon. The crown weighs just 10.8g, the sole panels, 7.4g. Together they account for 50 per cent of the head’s surface.
Epic Sub Zero’s head construction allows Callaway engineers to position the centre of gravity low, deep and in line with the head’s neutral axis, the line that runs perpendicular to the loft and intersects with the geometric centre of the head, a location that promotes high launch and low spin to promote maximum distance.
Two interchangeable weights (12g and 2g) positioned in the front and back of the sole allow you to adjust spin-rate 200 rpm. Position the heavier weight forward to lower spin and put it in back to increase forgiveness and promote higher launch and longer carry.
Distance is also enhanced by Callaway’s Speed Step technology. Designed with the help of aerospace experts, the Speed Step on the crown improves aerodynamics for more head speed.
Callaway engineers paid particular attention to the shape, aesthetics and acoustics to make Epic Sub Zero pleasing to the eye and to the ear.
Four premium, Tour-proven stock shafts are available, including HZRDS, Diamana, Fuji and Rogue.
Epic Sub Zero Fairway Woods
Four key technologies work in the quest to make GBB Epic Sub Zero fairway woods forgiving and low-spinning to promote a remarkabledistance and control.
The first is Callaway’s proprietary triaxial carbon that makes it 78 per cent lighter than a steel crown.
The saved weight is repositioned in tactical places within the head to increase MOI for more stability on mis-hits. Triaxial carbon also lowers the centre of gravity, making this the lowest CG of any Callaway fairway wood.
The second key technology is the latest generation of Hyper Speed Face Cup technology, designed to increase the area of the face that delivers fast ball speed.
Now, the thin and flexible rim around the inner side of the face flexes and releases more uniformly and efficiently at impact to further increase ball speed across the face.
The third key technology is Speed Step, developed through a cooperative effort between Callaway R&D and aerospace engineers.
Located on the crown, the precise size, shape and position of the Speed Step improves the head’s aerodynamics to promote more speed and distance without swinging harder.
The fourth key technology is adjustable weighting, which employs two interchangeable weights in the sole, toward the front and back, to adjust the launch and spin rate 250 rpm, to promote maximum distance.
Install the heavier weight (22g) up front and the lighter weight (3g) in back for low-spin, lower launch conditions for a lower, flatter trajectory. Putting the heavy weight in back to deliver mid-level spin, a higher launch angle and raise MOI for easier launch.
Aesthetically, Epic Sub Zero’s new, aero-elliptical shape is designed to be pleasing to the eye, and bolster MOI by positioning more weight farther back from the face.
Other visual cues that make Epic Sub Zero stand out include the visible triaxial carbon weave on the rear half of the crown and the spirited green accents on the head, shaft and grip.
The stock shaft is Aldila’s Tour-proven Rogue MAX, which incorporates advanced materials and a carbon fiber multi-axial weave to promote a combination of consistency and stability.