Big Bertha Fusion pushes the boundaries of forgiveness like no Callaway club ever has. The key benefit? More forgiveness means straighter flight on mis hits and straight flight nets longer distance drive after drive.To increase forgiveness you have to raise the head’s MOI measurement. We’ve succeeded dramatically by developing a revolutionary clubhead design that starts with an aerospace grade titanium exoskeleton called an Exo Cage™. The Exo Cage is fitted with a crown and sole composed of an ultra light ultra strong material called triaxial carbon. Triaxial carbon is made possible by the deep knowledge we’ve gained from our years of experience incorporating carbon materials into our metalwoods. Big Bertha Fusion’s numbers speak volumes. The revolutionary new triaxial carbon material is over 65% lighter* than titanium and more than 35% thinner than our previous forged composite material. This allows us to position a remarkable 35.4 grams** in strategic areas of the head to optimize the center of gravity and increase the MOI by up to 17%*** a remarkable jump that golfers will notice by increasing the quality and accuracy of their off center hits. This driver also incorporates Callaway’s Speed Step technology devised with the help of aerospace experts to enhance the head aerodynamics promoting faster clubhead speeds. Big Bertha Fusion comes stock in both a 45.5” length for exceptional distance or a 44.5” length for enhanced control. All stock configurations are available with UST’s new Recoil driver shaft that’s designed to load more efficiently on the downswing and unload with greater power and precision through impact.OUR MOST FORGIVING DRIVER EVERForgiveness is more than just high MOI. Callaway engineers have pioneered a new “recipe for ultimate forgiveness” which includes a forgiving shape a low and deep Center of Gravity draw bias an enhanced sweet spot area high clubhead speed and multiple shaft lengths. The result is the most forgiving driver Callaway has ever created. KEY FEATURESInnovative Exo Cage For Forgiveness & PowerTitanium Exo Cage makes it possible to reposition weight for more forgiveness and increased swing speed to increase accuracy and distance.Fusion Technology For Maximum ForgivenessFuses a titanium Exo Cage with an ultralight triaxial carbon crown and sole to create forgiveness and stability promoting straighter and longer drives.Industry leading Aerodynamics For More Head Speed & DistanceOur proprietary Speed Step designed with help from aerospace experts reduces drag to promote faster swing speed for more distance.Women’s Big Bertha Fusion DriverCallaway specifically engineered the Women’s Big Bertha Fusion driver with a swing weight overall weight and shaft configurations designed to make the driver extremely forgiving and easy to hit off the tee. SHAFT OPTIONSUST Recoil – UST’s first ever Recoil driver shaft is designed to load energy on the downswing and unload with an extraordinary combination of power and precision through impact.Mitsubishi’s Diamana Red – Combines a firm midsection and active tip to promote high launch low spin and fast ball speed and to make it easier to hit a distance enhancing draw.DIAL IN YOUR SHAFT LENGTHFor the first time ever Callaway is offering two stock driver shaft lengths: 45.5” for maximum distance and 44.5” for maximum control. The standard driver shaft length is 45.5″If you are missing the fairway both left and right or are satisfied with your distance but want to hit it straighter try the 44.5”Key Quotes “Big Bertha Fusion’s innovative construction which combines a titanium Exo Cage with a Triaxial Carbon crown and sole wouldn’t be possible without the nearly 20 years we’ve spent researching and developing carbon fiber technology.” Dr. Alan HocknellSenior Vice President R&D“Big Bertha Fusion’s unparalleled forgiveness and stability at impact promotes straight flight on mis hits and gives golfers the green light to make a fast aggressive swing.” Evan GibbsDirector R&D WoodsFeatures & BenefitsMaximum Forgiveness from Fusion Technology Big Bertha Fusion pairs an aerospace grade titanium Exo Cage with our ultra light Triaxial Carbon crown and sole. The fusion of these materials allowed Callaway engineers to position substantially more weight in the perimeter and far back from the face compared to our previous drivers resulting in a dramatically higher level of forgiveness.Speed and Forgiveness from a New and Innovative Shape Big Bertha Fusion’s Triaxial Carbon Exo Cage gives us the freedom to break previous tradeoffs regarding head shape giving us the ability to create an appealing new shape that combines fast aerodynamics with high MOI. The new shape also gave us new options in acoustic engineering allowing us greater ability to evoke an especially satisfying sound and feel.Increased Head Speed from Industry leading Aerodynamics The streamlined head shape aided by our proprietary Speed Step that we created with the help of aerospace experts is designed to move faster through the air.Two High Performance Stock Shaft Options UST’s first ever Recoil driver shaft is designed to load energy on the downswing and unload with an extraordinary combination of power and precision through impact. Mitsubishi’s Diamana Red shaft combines a firm midsection and active tip to promote high launch low spin and fast ball speed and to make it easier to hit a distance enhancing draw. Specifications: MODEL 9° 10.5° 13.5°HT Loft Adjustable (8° 11°) Adjustable (9.5° 12.5°) Adjustable (12.5° 15.5°) Lie Angle Adjustable Adjustable Adjustable Length 44.5″ & 45.5″ 44.5″ & 45.5″ 44.5″ & 45.5″ Clubhead Volume 460cc 460cc 460cc Swingweight D2 D2 D2 Left Hand Yes Yes Custom Only