January 4, 2017 – Callaway Golf has introduced today the Great Big Bertha Epic and Great Big Bertha Epic Sub Zero drivers, incorporating Callaway’s innovative new Jailbreak ball speed technology. Jailbreak Technology changes the fundamental way the head behaves at impact to promote more distance for every type of player.

The key structural components of a driver – crown, sole and face – deform at impact. Because they’re connected, they influence each other’s dynamics. Jailbreak incorporates two slender titanium bars positioned parallel to each other behind the face, connected to the crown and sole. The size, strength and position of each bar creates a new dynamic relationship between the crown, sole and face. The result is a profound change in how the head, as a whole, behaves at impact, resulting in more speed across a much larger area of the face.

“Jailbreak Technology creates a new and remarkably efficient working relationship between the face, crown and sole to promote faster ball speed across more of the face to give the golfer more distance,” said Dr. Alan Hocknell, Callaway’s senior vice president of R&D.

CALLAWAY GREAT BIG BERTHA EPIC DRIVER

GBB Epic’s clubhead consists of Callaway’s new aerospace-grade titanium Exo-cage outfitted with a crown and sole panels made of triaxial carbon, an extraordinarily light and strong composite material developed by Callaway. Nearly half of the head’s surface – 46 percent — consists of triaxial carbon, with the crown weighing just 9.7g and the sole just 5.8g. That’s the lightest crown of any Callaway driver currently on the market.

Epic’s multi-material structure is incredibly light and strong, with high MOI and a low, deep-back CG that makes it ultra-easy to launch the ball on a high angle with low spin.

Epic’s increased accuracy is rooted in Callaway’s Adjustable Perimeter Weighting technology, an invaluable 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, both for good reason: to deliver a full 21 yards of shot-shape correction (a 22 percent increase compared to last season’s Great Big Bertha) to dial in straighter, more accurate flight while maintaining high MOI (or Moment of Inertia).

CALLAWAY GREAT BIG BERTHA EPIC SUB ZERO DRIVER

GBB Epic Sub Zero’s clubhead also consists of Callaway’s aerospace-grade titanium Exo-Cage outfitted with a crown and sole panels made of triaxial carbon. A full 50 percent of the head’s surface area consists of triaxial carbon. The crown weighs just 10.8g, the sole panels just 7.4g. The weight saved is strategically repositioned to create Epic Sub Zero’s extraordinarily high MOI, which measures a full 40 percent higher than the Big Bertha 816 Driver (when Epic Sub Zero’s heavier interchangeable weight is in back).

Two interchangeable weights (12g and 2g) positioned at the front and back of the sole, which can be used in tandem with the Optifit hosel, give players the ability to adjust the spin-rate, the launch angle and MOI.

Epic Sub Zero’s unique head construction allows Callaway engineers to position the Centre of Gravity low, deep and in line with the head’s neutral axis, which is defined as a line that intersects the geometric center of the face and runs perpendicular to the loft. The CG location, in particular CG height, is often measured relative to the neutral axis.

In both drivers, head speed gets an additional boost from Callaway’s proven Speed Step technology. Devised with the help of aerospace experts, the Speed Step, located on the crown, improves head aerodynamics for more speed and distance.

“Callaway engineers paid particular attention to the shape, aesthetics and acoustics to make Epic drivers great to look at and agreeable to listen to,” said Dr. Alan Hocknell. “The Tour-inspired shape is sleek and confidence-inspiring. The triaxial carbon weave visible on the rear half of the crown, and the vibrant green highlights on the head, shaft and grip, together create a dynamic appearance from every angle.”

SPECIFICATIONS

• Availability: GBB Epic Driver, GBB Epic Woods full line and GBB Epic Sub Zero Driver, January 27, 2017.
• Lofts (adjustable): GBB Epic Driver, 9º (8º-11º), 10.5º (9.5º-12.5º), 13.5ºHT (12.5º-15.5º); GBB Epic Sub Zero Driver, 9º (8º-11º), 10.5º (9.5º-12.5º).
• Stock-shafts: Project X HZRDUS Green, MRC Diamana Greenboard, Fujikura Pro Green and Aldila Rogue Max.
• RRP: GBB Epic Driver, 549€; GBB Epic Sub Zero Driver, 549€.