Speed From Speed Step Crown - To reduce drag and maximize speed through the swing, weve put in a Speed Step Crown and combined it with an optimized aerodynamic head shape. Everything about this driver is optimized for aero efficiency, which is critical to add speed with less drag.Speed From RMOTO Face Technology - This is how we increase ball speeds across the face - by reducing 10% of face weight to make it thinner. RMOTO leads to more energy efficient energy transfer all over the face, allows us to put the CG 17% lower where most golfers want it, and delivers higher MOI.Speed From Maximum Shaft Load - The shaft is a key component to speed, thats why XR comes stock with the new Project X LZ. It produces maximum shaft load during the downswing loading zone for greater energy transfer to the ball.OptiFit Adjustability - Choose from 8 different loft and lie configurations to find the perfect launch for your ball flight. When you get the right launch conditions, you get more distance.