The Rogue ST Max drivers all feature a lightweight carbon fiber crown. (David Dusek/Golfweek)
Looking down in the address position, golfers will see a large, matte-black, carbon-fiber crown and a larger head shape from face to back than most Callaway drivers. That extra space allowed Callaway drivers to increase the moment of inertia by adding something new. The Tungsten Speed Cartridge is a large weight in the back of the head that is affixed in a thermoplastic polyurethane sleeve and held under a copper-toned aluminum cap using a pair of screws.
The key feature of the Tungsten Speed Cartridge is it positions extra mass, up to 23 grams, as far back and down as possible. On off-center hits, the added weight helps keep the face square and moving forward through impact, so shots struck outside the sweet spot fly straighter and maintain more ball speed.
The Callaway Rogue ST Tungsten Speed Cartridge. (David Dusek/Golfweek)
While each Rogue ST driver comes standard with an adjustable hosel to allow players and fitters to decrease the loft by 1 degree or increase it by as many as 2 degrees, Callaway is releasing four different Rogue ST models to ensure one fits every type of golfer.
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