MODERATE SWING SPEED. MAXIMUM PERFORMANCE. Titleist TSR1 Driver's incredible lightweight configuration and enhanced aerodynamics make it easier to generate more speed. The new Multi-Plateau Variable Face Thickness design optimizes ball speed across the entire face. FEATURES & TECHNOLOGY Ultra-Lightweight Configuration Every unnecessary gram, from head to grip, has been eliminated from the design of TSR1. It is strategically engineered to be as light as possible while still providing maximum laun