GT4 is designed for players looking to eliminate sub-optimal spin rates – usually over 3,000 RPMs – to create a more penetrating and efficient ball flight. GT4’s dual-spin control settings allow golfers to choose between more aggressive spin reduction or a more balanced and stable setting with more moderate spin reduction. This is accomplished by flipping a heavier (11 gram) and lighter (3 gram) weight between two positions. GT4 also has a smaller profile than the GT2 and GT3 models at 430cc.