Golf tools
Shaft flex finder
Which shaft flex do you need? Tell us your driver swing speed, how far you hit your driver or how far you carry a 7-iron. We'll match it to a flex, a shaft weight and a launch profile.
Shop Regular flex shafts
Driver and fairway wood shafts in your flex, with tip adapters for most adjustable club heads. Choose your club and the brand of your club head to see every matching option.
Browse all Regular flex shafts → · Take the golf shaft quiz · Shaft buying guide
Shaft flex chart
The finder uses these bands. Driver distance means carry plus roll on a well-struck drive. 7-iron carry is how far the ball flies in the air.
| Flex | Driver swing speed | Driver distance | 7-iron carry |
|---|---|---|---|
| Ladies (L) | Under 70 mph | Under 175 yards | Under 105 yards |
| Senior (A) | 70–85 mph | 175–210 yards | 105–128 yards |
| Regular (R) | 85–95 mph | 210–240 yards | 128–143 yards |
| Stiff (S) | 95–110 mph | 240–275 yards | 143–165 yards |
| X Stiff (X) | Over 110 mph | Over 275 yards | Over 165 yards |
How the finder works
Swing speed is the best single predictor of the flex you need, so the finder converts everything to an equivalent driver swing speed. As a rule of thumb, driver distance in yards is about two and a half times your driver swing speed in mph, and 7-iron carry in yards is about one and a half times it.
It then adjusts for tempo. A quick, aggressive transition loads the shaft harder, so the finder treats it as about 3 mph faster, and a smooth tempo as 3 mph slower. If you land within a few mph of the boundary between two flexes, it tells you to try both.
Ball flight shapes the launch profile suggestion. Golfers who hit it low usually benefit from a higher-launching shaft with a softer tip, and golfers who balloon the ball from a lower-launching, lower-spinning one.
Signs you are in the wrong flex
- Too stiff: low shots, a fade or slice, a harsh feel at impact and a loss of carry distance.
- Too soft: high, spinning shots, a hook or pull, a "whippy" feel and inconsistent distance.
A finder is a starting point, not a fitting. If you are between flexes, or if your current shaft suits you even though the chart says otherwise, trust your results on the course. A custom club fitting with a launch monitor gives the most reliable answer.
Frequently asked questions
How do I find my swing speed without a launch monitor?
Use your driver distance or your 7-iron carry instead. Pick an honest, typical shot, not your best one. Many driving ranges, golf shops and simulator venues will also measure your speed for little or nothing.
Is senior flex only for seniors?
No. "Senior", also called A or M flex, simply means a softer shaft for moderate swing speeds. Plenty of younger golfers with smooth swings play it, and plenty of seniors with fast swings play regular or stiff.
Should my fairway woods use the same flex as my driver?
Usually, yes. Playing the same shaft family and flex through your woods keeps the feel and ball flight consistent from club to club.
Does flex matter more than weight?
They work together. Flex controls how much the shaft bends, while weight affects your tempo, timing and how hard you can swing. A shaft that is too light can make your swing quick and erratic; one that is too heavy can tire you and slow you down.
Read more: the golf shaft flex guide, how to hit the golf ball further and how to choose golf clubs.