What is Golf Shaft Torque? How Does It Differ From Flex? Understanding the Difference Between Torque and Flex
（Image courtesy of the 2025 PGA Championship）
When choosing a golf shaft, the most common specifications we see are weight and flex ratings such as R, S, or X. However, in the detailed specification sheets of some shafts, you may occasionally see a numerical value expressed in degrees—Torque.
What is torque? It sounds very similar to shaft flexibility or "Flex," as both seem to describe the extent to which a shaft deforms under stress, but they actually refer to two different types of movement.
Simply put, Flex primarily describes the bending characteristics of the shaft, while Torque observes the degree of twisting that occurs as the shaft rotates along its own axis.
Both influence swing feel and performance, but they cannot be treated as the same specification. This article will help you better understand shaft torque and its differences from flex.
What is Torque?
There is a detail you might not have noticed: during a swing, the shaft doesn't just bend forward and backward.
As we accelerate on the downswing, or if the ball is not struck on the center of the face, the clubhead exerts a rotational force on the shaft, causing it to twist along its central axis. Shaft torque is the measurement used to describe this degree of twisting.
Think of it like holding both ends of a towel and twisting them in opposite directions; the towel twists like a rope. The greater the degree of rotation, the easier it is to twist; the smaller the degree, the higher its resistance to twisting.
Technically, however, the torque figure on a shaft spec sheet does not represent how much "twisting force" is applied, but rather how many degrees the shaft is twisted under specific test conditions.
Therefore, a lower torque value means a smaller degree of twist during testing, while a higher value indicates a greater degree of rotation.
Torque influences how the shaft rotates during a swing and at impact, and it is one of the design elements shaft engineers use to control face stability, impact feedback, and overall feel.
It is important to note that torque is not the only factor that determines the direction of the clubface at impact. Results are also influenced by swing path, face angle, impact point, shaft E.I. profile, and head configuration; you cannot determine that a ball will go left or right based on a single torque value.
How Does Torque Affect Performance?
Generally, shafts with lower torque exhibit less rotational movement under stress, and the impact feedback is usually more direct and firm. For golfers with a quick transition, a high swing speed, or those who prefer clear clubhead feedback, such designs may feel more stable and crisp.
Shafts with higher torque allow for a larger degree of twisting, which some golfers perceive as a softer feel; it can also make it easier to feel the clubhead release during the swing.
Lower Torque Values
- Smaller degree of shaft twist
- Higher resistance to twisting
- Impact feedback is typically more direct and firm
- Some golfers may find the clubhead response more stable
- If the overall design is unsuitable, it may feel too stiff or difficult to release
Higher Torque Values
- Larger degree of shaft twist
- Impact feel may be softer
- Some golfers find it easier to feel the rotation and release of the clubhead
- Does not necessarily mean the shaft is unstable
- Does not necessarily mean it is only suitable for golfers with slower swing speeds
The most common misconception is equating low torque directly with "being more stable and straighter" and high torque with "being softer and prone to hooking/slicing."
In reality, while torque is related to feel and stability, a lower number is not always better.
High torque does not mean the shaft is unstable, and low torque does not mean the entire shaft will feel stiff like a board. True feel is determined by the comprehensive design of the entire shaft.
For example, some shafts use a stiffer butt section combined with relatively high torque, allowing the golfer to feel stability in their hands while retaining feedback and feel at the moment of impact. This shows that torque is not an isolated number and must be understood in conjunction with other shaft settings.
How Torque is Indicated and What It Means
Shaft torque is usually expressed in degrees ("°"), for example:
Torque 2.8°
Torque 3.5°
Torque 4.5°
Torque 5.0°
This number represents the degrees of twist generated under specific test conditions.
Consequently, the way to interpret torque figures is often the opposite of what people intuitively imagine:
A smaller torque value does not mean lower resistance; rather, it indicates that the shaft actually twists less.
For instance, under the same testing conditions, a 3.0° shaft will generate less twist than a 5.0° shaft and can therefore be understood as having higher resistance to twisting.
Some manufacturers classify anything below 3 degrees as low torque, 3.3 to 5.0 degrees as medium torque, and over 5 degrees as high torque. However, these are general categories for convenience and not absolute boundaries for choosing a shaft.
Additionally, the same shaft model may have different torque values due to differences in weight and flex.
For example, some graphite shafts may gradually lower their torque value as weight increases or flex stiffens. This is not a fixed rule all products must follow, as designers can still create different combinations using materials, structure, and fiber orientation.
Therefore, seeing two shafts with the same torque value does not mean they have the same feel and ball flight.
What is the Difference Between Torque and Flex?
Both Torque and Flex describe a shaft's reaction to stress, but they observe movement in different directions.
Flex can be understood as the characteristic of the shaft bending forward and backward and rebounding when subjected to swing force.
If the Flex is too soft for a golfer, the shaft might feel as though it cannot keep up with their rhythm, and the timing of the rebound may be difficult to control; if it is too stiff, the golfer may feel the shaft does not bend enough, making it hard to release the clubhead properly.
Torque does not look at forward/backward bending, but at the shaft's rotational movement.
When the clubhead is subjected to rotational force, torque affects how the shaft resists or reacts to that force and changes the clubhead feedback perceived by the golfer.
| Difference | Torque | Flex |
|---|---|---|
| Main Description | Degree of rotation along the shaft's axis | Bending characteristics under stress |
| Common Labeling | 2.8°, 3.5°, 4.5° | L, A, R, S, X |
| Value Meaning | Lower value = less twisting angle | Stiffer = usually less bending |
| Main Feel | Rotational response, face feedback, feel at impact | Swing rhythm, bending and rebound timing |
The easiest way to remember is: Flex looks at how easily the shaft "bends," while Torque looks at how easily the shaft "twists.".
However, during an actual swing, bending and twisting do not occur separately. The shaft is subjected to forces from different directions simultaneously, so engineers do not simply adjust just one of the two when designing a shaft.
This is why two shafts with the same "S" flex rating can feel completely different, and two shafts with the same 3.5° torque might not have the same stability, trajectory, or impact feedback.
Weight, Flex, Torque, E.I. profile, and head-end design must all be considered together to understand the true personality of a shaft.
What Influences Shaft Torque?
Within the same product line, versions with different weights and flexes may be designed with different torque values. Even with the same weight and flex, different products may show completely different twisting reactions due to material and structural design.
Factors affecting shaft torque mainly include the following:
Materials Used
Carbon fiber comes in different strengths, moduli, and characteristics. When paired with different resin systems, it affects the shaft's rigidity, durability, and response to stress.
Different materials aren't simply a matter of "the more premium, the lower the torque"; rather, they allow designers to strike a balance between weight, stability, feel, and durability.
Carbon Fiber Orientation
Carbon fiber shafts are made of multiple layers stacked in specific directions.
If fibers are arranged primarily along the length of the shaft, they have a greater impact on bending characteristics; adding multi-axial materials or different angles allows designers to control the response to rotational forces.
Some shafts incorporate multi-axial materials in the mid or tip section specifically to enhance twisting stability while retaining the desired feel.
Wall Thickness and Structure
Shafts do not have the same thickness from the grip end to the tip end.
Designers can adjust the wall structure at the grip, mid, and tip sections to control bending and twisting reactions at different points independently.
Thus, even if two shafts have similar overall torque, one might focus on strengthening the tip section, while the other might provide higher stability in the mid or grip section, naturally leading to different feelings during a swing.
Internal Molds and Layup Design
The internal molds, material selection, and layup methods all influence the final Weight, Flex, Torque, and E.I. profile.
Some series even use different internal molds and material configurations for different weights and flexes rather than just thickening or thinning the same shaft.
This means that "R," "S," and "X" within the same series are not just different in flex; they may have been individually adjusted from material configuration to structural design.
Therefore, we cannot interpret or select shafts simply by saying "low torque is for experts, high torque is for beginners."
Torque is one of the tools designers use to adjust shaft performance, but it must be considered in conjunction with weight, flex, E.I. profile, and the golfer's own swing style.
Conclusion
Unlike Flex ratings like R, S, or X, Torque is usually not printed directly on the shaft and rarely appears in product names. Some brands include torque values in detailed technical spec sheets, while others provide only weight, flex, length, and diameter.
For the average golfer, Torque isn't necessarily the first specification to decide on, but it helps us understand why two shafts with seemingly similar weights and flexes have different stability and impact feedback.
If you often feel the clubhead is hard to control, the feedback is too harsh, or your impact feel and shot dispersion remain inconsistent despite a consistent swing, you should consider reviewing the overall shaft configuration in addition to checking your swing mechanics.
While torque can influence shots going left or right or unstable ball flight, it cannot be blamed entirely on high or low torque. Actual results are a combination of swing path, face angle, impact point, torque, flex, weight, and head configuration.
Therefore, if you are struggling with your swing or inconsistent ball flight, rather than chasing a lower Torque number to suppress club twisting, it is better to book a professional fitting. Use real-world testing and launch monitor data to find a shaft that matches your rhythm and provides a stable impact point and ideal feel.
Ultimately, torque is not a "stability score" for a shaft, but one of the clues to understanding how a specific shaft performs.
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Further Reading
The "steps" on iron shafts are not just for aesthetics; their role is surprisingly impactful!
──"Why Do Iron Shafts Have Steps? The Secret to Feel Lies Here!"
Must-read before buying clubs! "R" flex varies greatly between shafts—be careful not to buy the wrong spec and cause your score to skyrocket...
