What is the difference between 5.5 and 6.5 shaft flex?

Answered by Douglas Hiatt

The difference between a 5.5 and 6.5 shaft flex in golf can have a significant impact on the performance and feel of a golf club. The flex of a golf shaft refers to its ability to bend during the swing, and it is an important factor in determining how the clubhead interacts with the ball. A shaft that is too stiff or too flexible for a golfer’s swing speed can result in inconsistent shots and a loss of distance and accuracy.

The 5.5 flex is considered a regular flex, and it is generally suitable for golfers with a driver swing speed ranging from 84 to 96 mph. This is the average swing speed range for most amateur golfers. A regular flex shaft is designed to provide a balance between control and distance. It allows for a moderate amount of shaft bend during the swing, which can help generate clubhead speed and increase distance. At the same time, it provides enough stability to maintain accuracy and control.

On the other hand, the 6.5 flex is classified as an extra stiff flex. It is intended for golfers with a driver swing speed in the range of 105 to 114 mph. This is typically seen in professional golfers or highly skilled amateurs with above-average clubhead speed. An extra stiff shaft is much less flexible than a regular flex shaft, and it requires a higher swing speed to properly load and release the shaft during the swing. The extra stiffness provides added stability and control, which can be beneficial for golfers who generate a lot of power but may struggle with accuracy.

The main difference between the 5.5 and 6.5 flex lies in their stiffness. The 5.5 flex offers more flexibility, allowing for a greater degree of shaft bend and a higher launch angle. This can be advantageous for golfers with slower swing speeds as it helps to increase distance. The 6.5 flex, on the other hand, is much stiffer, providing less shaft bend and a lower launch angle. This can be advantageous for golfers with faster swing speeds as it promotes a more penetrating ball flight and better control.

It’s important to note that swing speed is not the only factor to consider when determining the appropriate shaft flex. Factors such as swing tempo, timing, and player preference also play a role. Additionally, different shaft manufacturers may have slightly different flex ratings, so it’s always recommended to try out different shafts and consult with a professional club fitter to find the best fit for your individual swing characteristics.

The difference between a 5.5 and 6.5 shaft flex lies in their stiffness. The 5.5 flex is more flexible and suitable for golfers with slower swing speeds, while the 6.5 flex is extra stiff and designed for golfers with faster swing speeds. Choosing the right shaft flex is crucial for maximizing distance, accuracy, and overall performance on the golf course.