Titleist TSR1 Golf Driver The TSR1 driver is built for ultra-lightweight speed and distance. According to industry research, the moderate speed player accounts for roughly one-third of all golfers worldwide. The TSR1 driver provides these players the launch characteristics and speed to deliver effortless added yards to every drive. As a maximum performance 460cc driver, TSR1 is roughly 40 grams lighter than TSR2, with weight savings coming from a lighter headweight, 40-gram shaft and lightweight grip. The elimination of excess weight, combined with improved aerodynamics and a similar “boat tail” shape to TSR2, helps golfers swing TSR1 faster through the air. Multi-Plateau Variable Face Thickness technology found in other TSR driver...