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How to choose a badminton racket

What 3U, 4U and 5U mean, head-heavy vs head-light, stiff vs flexible shafts and G4 vs G5 grips, explained for beginners, intermediates and advanced players.

8 min readUpdated

To choose a badminton racket, match four specs to your game: weight (3U, 4U or 5U), balance (head-heavy, even or head-light), shaft flex (flexible, medium or stiff) and grip size. For most beginners that means a 4U or 5U racket with even balance or slightly head-light, a flexible or medium shaft, and the grip size that fits your hand. Heavier, head-heavy, stiff rackets reward strong, well-timed swings; they punish late, short ones.

This guide explains what each spec really changes, with a visualizer to feel the difference between balance points, and a quick pick-by-level table at the end. No brand rankings, no affiliate links: just the specs, so you can read any racket's label.

How to read a badminton racket spec label

Most racket frames carry a short code near the throat or on the handle, something like 4U G5. The "U" number is the weight class and the "G" number is the grip size. Product pages add the balance point (in millimeters or as "head-heavy" and so on), the shaft flex, and the maximum recommended string tension.

SpecLooks likeWhat it changes
Weight3U, 4U, 5UStability vs. how quick it feels
Balance285 mm, "head-heavy"Power on big swings vs. speed in exchanges
Shaft flexFlexible / medium / stiffHow much the shaft helps a slower swing
Grip sizeG4, G5 (or S1, S2)Comfort, control, and how relaxed your hand stays
Max tensione.g. up to 28 lbsThe safe upper limit for stringing

Badminton racket weight: what 3U, 4U and 5U mean

The U rating is a weight class for the unstrung frame. Lower numbers are heavier. The bands most commonly used (Yonex-style labels, widely copied by other brands) look like this:

ClassFrame weightTypical feel
2U90–94.9 g (3.17–3.35 oz)Heavy, very stable
3U85–89.9 g (3.00–3.17 oz)Solid, powerful, needs good technique and strength
4U80–84.9 g (2.82–3.00 oz)The all-round middle
5U75–79.9 g (2.65–2.82 oz)Light and quick; easy on the arm

Two things to keep in mind. First, these are frame weights: strings and grip add several grams on top, so a strung 4U racket in your hand weighs more than 84.9 g. Second, a few grams sounds tiny, but rackets are swung fast and far from the hand, so you feel the difference between classes clearly, especially late in a long session.

4U vs 5U: which is better?

Neither, in general; it depends on your swing. A 4U racket is a little more stable on contact, so smashes and clears feel more solid and off-center hits twist the head less. A 5U racket is quicker to bring back up, which helps in fast doubles exchanges, in defence and for players who are still building wrist and forearm strength. If you're a beginner unsure between the two, 4U or 5U with even balance are both sensible; pick the one that doesn't make your arm feel tired after an hour.

3U vs 4U

3U suits strong players with good technique who want more mass behind the shuttle, mostly singles players and back-court attackers. If your timing is still inconsistent, the extra weight tends to make you late rather than powerful.

Balance point: head-heavy vs even vs head-light

Balance is where the racket balances on your finger, measured in millimeters from the end of the handle. Two rackets with identical weight can feel completely different because of it. Rough guide (brands draw the lines slightly differently):

  • Head-light: below roughly 285 mm. Quick in the hand, great for net play and defence, but you generate more of the power yourself.
  • Even balance: roughly 285–295 mm. The all-rounder; forgiving for beginners and players who do a bit of everything.
  • Head-heavy: above roughly 295 mm. Extra momentum for smashes and clears from the rear court, at the cost of slower recovery between shots.

Try it below: the same weight class feels very different as the balance point moves toward the head.

Balance and weight visualizer

Pick a weight class, slide the balance point and see how the feel changes.

80–84.9 g frame
270285295315290 mm

Even balance

Between the two: a forgiving all-round feel that suits most beginners and players who attack and defend in equal measure.

Swing weight (relative)100
Power on full swings
Speed in fast exchanges

Same effort, this racket: middle of the road

Simplified model: the frame's typical mass for the class, treated as if it sat at the balance point and swung about a point near the hand. Real swing weight also depends on how mass is spread along the frame, the strings and the grip, so use it to compare, not as a measurement. The 285 and 295 mm cut-offs are rough and vary by brand. Index 100 = a 4U racket balanced at 290 mm.

Balance and weight interact. A light 5U head-heavy racket can feel similar on a swing to a 4U even-balanced one; the visualizer's relative swing index shows that trade-off. When you try rackets, swing them, don't just hold them: weight is what you feel when it's still, balance is what you feel when it moves.

Shaft flex: flexible, medium or stiff

The shaft bends during the swing and straightens just before contact. How much it bends depends on how fast you swing.

  • Flexible shafts bend with a slower, smoother swing and release that energy into the shot. They make clears easier to hit deep, which is why they're the usual recommendation for beginners and players with a gentler swing.
  • Medium shafts are the middle ground for improving club players.
  • Stiff shafts only bend meaningfully under a fast, explosive swing. For players who have that swing, they give precise, direct shots; for players who don't, they feel dead and the shuttle falls short.

Flex labels are not standardized between brands, so "medium" from one brand may be "stiff" from another. Compare within a brand, or better, try before you buy.

Grip size: G4, G5 and why conventions differ

Grip size is the thickness of the handle. On Yonex rackets a bigger G number means a thinner handle: G5 is thinner than G4, by roughly 3 mm of circumference. Yonex rackets are commonly sold in G4 or G5 (which one is standard depends on the market), and many other brands' rackets come in G5 as standard. Li-Ning uses S sizes (S1, S2 and so on) instead, and some brands number the other way round. There is no shared standard, so check the specific brand's chart rather than comparing numbers across brands.

  • Thinner grips make it easier to switch between forehand and backhand grips and to use the fingers for fine control and quick flicks. Many players prefer a fairly thin handle for exactly that reason.
  • Thicker grips spread the load across the hand and can feel more stable for players with large hands.
  • Overgrips add thickness. Each overgrip you wrap adds a little, so buying the thinner size and building it up is easy; going the other way is not.

If you're not sure how to hold the racket in the first place, start with our badminton grip guide: a relaxed grip matters more than its size.

Strings and tension

The strings affect feel as much as the frame. Lower tensions give a bigger sweet spot and more depth from a gentle swing; higher tensions give more control and a crisper feel for players who hit hard and consistently, but punish mistimed shots. Never string above the frame's stated maximum. Our string tension calculator suggests a range in lbs and kg from your level and style.

How to choose a badminton racket for a beginner

For a first racket or a beginner upgrade, keep it forgiving:

  1. 4U or 5U weight.
  2. Even balance or slightly head-light.
  3. Flexible or medium shaft.
  4. A grip size that lets you hold the racket loosely with your fingers, adjusted with an overgrip.
  5. A full graphite / carbon frame rather than a steel or aluminium one: lighter and much easier to swing.
  6. Moderate string tension rather than as tight as possible.

Spending more doesn't make a racket better for you; the right specs do. Your technique (and our beginner tips) will add more to your game than any frame.

Which racket by level and style

PlayerWeightBalanceShaft
Beginner4U–5UEven / head-lightFlexible
Improving club player4UEvenMedium
Singles attacker3U–4UHead-heavyMedium–stiff
Doubles front-court / defence4U–5UHead-lightMedium
Doubles all-rounder4UEvenMedium

These are starting points, not rules. Want a recommendation from your own answers (level, style, arm history)? Use the racket finder. And if you're buying a racket for more power, know that technique is still the biggest factor: our guide on how to smash harder shows where smash speed really comes from.

Frequently asked questions

What does 4U mean on a badminton racket?

4U is a weight class for the unstrung frame, commonly 80 to 84.9 g. 3U is heavier (85 to 89.9 g) and 5U lighter (75 to 79.9 g). Strings and grip add weight on top, so the strung racket weighs more.

Is 4U or 5U better for beginners?

Both are sensible. 5U is quicker and easier on the arm; 4U is a bit more stable and solid on contact. Pair either with even balance and a flexible or medium shaft. Pick the one you can swing comfortably for a whole session.

Is a head-heavy racket better for smashing?

A head-heavy racket carries more momentum through the shuttle, which can help smashes and clears if you have the swing to use it. It is slower to recover between shots, so it suits back-court attackers more than front-court or defensive players. Technique still matters far more than balance.

What grip size should I get, G4 or G5?

On Yonex rackets G5 is thinner than G4. Most players prefer a fairly thin grip because it makes grip changes and finger control easier; you can always build it up with an overgrip. Other brands use different numbering (Li-Ning uses S sizes), so check each brand's chart.

What is the balance point of a badminton racket?

It is the point where the racket balances on your finger, measured in millimeters from the end of the handle. As a rough guide, under about 285 mm is head-light, 285 to 295 mm is even, and over about 295 mm is head-heavy, though brands draw the lines slightly differently.

Should beginners use a stiff or flexible shaft?

Flexible or medium. A flexible shaft bends with a slower swing and helps push the shuttle deep. Stiff shafts reward very fast, well-timed swings and can feel dead to players who have not developed that swing yet.

Stop guessing. Start seeing.

Whatever racket you choose, see what it does on court. Badminton Sensei traces every shuttle, clocks your smashes, calls the lines and keeps the score, all on your iPhone.

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