Shaft flex: flexible, medium or stiff?

How the shaft's bend changes power and control, and how to match it to your swing.

As you swing, the shaft bends, then straightens just before you hit. A flexible shaft bends more and gives some of that energy back to the shuttle. A stiff shaft bends less and goes exactly where you aim it.

Flexible

Easier power from a slower or shorter swing, more room for late timing, and less shock to the arm. The trade-off is a little precision: the head lags and catches up, so placement can wander on fast shots. Flexible shafts suit beginners, improvers and anyone with a compact or gentle swing.

Stiff

Direct and precise. With a fast, well-timed swing, a stiff shaft turns your speed into a sharp, accurate shot. With a slower swing it feels dead and harsh, and clears fall short. Stiff shafts suit advanced players with sound technique.

Medium

Most club players belong here: some free power, good control, and forgiving when your timing slips.

A quick test

If an easy, relaxed clear reaches the back line of the court, your swing is quick enough for a firmer shaft. If you have to force it there, choose more flex.

Brands rate flex differently

There's no shared scale. Yonex uses words (flexible, medium, stiff, extra stiff); some brands use numbers where a lower number means stiffer. We convert every brand's rating to one scale, but treat flex as approximate when you compare brands.

Flex and string tension

A stiff shaft strung very tight is the least forgiving set-up there is. If you're moving to a stiffer racket, keep your usual tension at first. See string tension.

Bend a shaft on our Learn page to feel the difference.