Golf shaft stiffness is an important factor in the performance of a golf club. It affects the accuracy of shots and the distance the ball travels. Shaft stiffness also affects the feel of the club in the golfer’s hands. Shafts come in different flexes to suit different players and their swing speeds. Faster swingers need stiffer shafts to get the most out of their clubs, while slower swingers do better with more flexible shafts. It's important to choose the right shaft stiffness for your game to ensure the best performance from your clubs.