Finding the right golf shaft flex is essential to getting the most out of your clubs. The shaft flex affects accuracy, distance, and consistency, so selecting a shaft that matches your swing speed and tempo can help you play better golf.
What Does Shaft Flex Mean?
Shaft flex refers to how much a golf shaft bends during your swing. Different flexes are designed to match different swing speeds, and the correct flex ensures that the club releases properly at impact for optimal performance.
Choosing the wrong flex can result in shots that slice, hook, or lose distance. The right flex helps you achieve consistent contact, better ball flight, and more control.
Swing Speed vs Tempo: What's the Difference?
- Swing Speed: This is the actual velocity of the clubhead at impact. The faster the swing speed the more stiff the flex of the club.
- Tempo: This is the rhythm of your swing or basically how fast or slow the swing feels relative to itself. Tempo is independent of swing speed.
- Examples:
- Jim Furyk has a slow-tempo swing where his backswing and downswing move in a smooth, measured rhythm.
- Jon Rahm has a faster-tempo swing where his motion is quicker but still consistent and rhythmic.
- Examples:
Why tempo matters: A higher-tempo swing often benefits from a slightly heavier shaft within the same flex, while a slower-tempo swing may perform better with a lighter shaft.
Shaft Flex & Weight Reference
Most drivers, woods, and hybrids come in these common flexes. Within each flex, shaft weight can also be adjusted based on your tempo (see the section above):
| Flex | Swing Speed (km/h) | Driver Shaft (g) | Iron Shaft (g) |
|---|---|---|---|
| Ladies | ≤110 | 40–55 | 80–95 |
| Senior / SR | 110–130 | 50–65 | 95–105 |
| Regular | 130–145 | 55–75 | 105–115 |
| Stiff | 145–170 | 65–85 | 115–130 |
| Extra Stiff | 170+ | 75–95+ | 125–140 |
Tip: Lighter shafts can help slower swingers generate more clubhead speed, while heavier shafts stabilize the club for fast swingers.
How to Measure Your Swing Speed
Modern golfers have several ways to determine their swing speed:
- Professional Fitting: A certified fitter can measure your swing and recommend the ideal shaft flex. Although, I don't recommend this option unless your handicap is in the single digits as they can be expensive and it's better to spend money on other things to help with your score.
- Driving Ranges with Launch Monitors: Many ranges now have launch monitors that display swing speed and ball flight metrics. It's best to test on a variety of different clubs to get an average across your driver, irons, wedges, woods, and hybrids. This helps ensure your shaft selection is consistent across your entire bag.
Putting It All Together
- Determine your swing speed: Use a launch monitor or professional fitting.
- Check your tempo: Slow or fast rhythm may shift your shaft choice within a flex range. There's no exact metric to assess this but it's more of a feel or observation.
- Select flex and weight: Use the table above to choose the right combination for drivers, woods, hybrids, and irons.
Choosing the right shaft flex and weight can make a huge difference in your consistency, distance, and enjoyment of the game.
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