Golfers invariably opt for Titleist drivers because of their unquestionable high performance. The new 2021 TSi 4 Driver (Titleist Speed Impact) has yet again seen significant improvements over previous models. The TSi 4 has been developed for the player who struggles with high spin and seeks a considerable reduction in RPM\'S for straighter, long-distance drives. The TSi 4 features a slightly smaller pear-shaped 425cc head with low, forward Centre Of Gravity for achieving neutralised spin at impact.