Badminton Racket Length: 665mm, 675mm and the 680mm Limit

Last checked: August 2026 · Written by the player-led team at Badminton House

A 665 mm or 675 mm badminton racket length is a manufacturer’s model specification. The 680 mm number is different: it is the BWF maximum overall frame length. A 675 mm frame is 10 mm longer than a 665 mm frame and still 5 mm below that legal ceiling.

Length alone does not tell you the shaft length, handle length, balance, swing feel, or playing result. Start with the exact number, then compare the complete build.

What do 665 mm, 675 mm, and 680 mm actually mean?

The first two numbers can appear as exact product specifications. The third comes from the rules. Keeping those source types separate prevents a model length from becoming a made-up standard.

On pages checked August 17, 2026, Li-Ning’s official Vietnam listing gave an exact 665 mm length for the AXFORCE 9 AYPT319-2. VICTOR’s official US and Canada product catalogue gives 675 mm for the Brave Sword 12N.

Those pages verify named models and regional variants only. Match the item code and region on the racket you are checking; do not transfer one listing’s length to every product sharing a family name.

Marketed length is not the same as the legal limit

An exact field such as 675 mm can be compared directly with 680 mm. A relative field such as “10 mm longer” needs a stated baseline before you can calculate the total. It must never be read as “10 mm below the legal maximum.”

Yonex’s current ASTROX 88 S PRO page labels the model “5 mm longer.” Yonex’s launch explanation describes the 88 S as 5 mm longer and the 88 D as 10 mm longer. Because that wording is relative, it does not by itself state an exact 665 mm, 675 mm, or 680 mm total.

• Exact total: compare the millimetre figure directly with the BWF ceiling.
• Relative claim: find the brand’s reference length before calculating anything.
• Model identity: match the item code, weight/grip variant, generation, and regional page.
• Conflicting fields: ask the manufacturer or distributor for the corrected exact total rather than choosing the convenient number.

What are the current BWF racket dimensions?

The BWF Laws of Badminton dated 26 April 2025, checked as the current source in August 2026, cap the complete frame at 680 mm long and 230 mm wide. The stringed area has its own smaller envelope.

These are maximum dimensions, not a BWF recipe for how much length belongs in the handle, shaft, or head. A legal 675 mm racket and a legal 665 mm racket can divide their totals differently.

What does the extra 10 mm tell you on court?

It tells you one exact geometric fact: 675 mm is 10 mm longer overall than 665 mm. It does not tell you where the manufacturer placed that difference, where your hand will sit, or how the complete racket will accelerate and redirect.

Even with consistent hand placement, a total-length difference does not reveal where the manufacturer placed the extra material. Real model comparisons rarely hold everything else constant. Handle length, exposed shaft, head geometry, mass distribution, stiffness, strings, and grip build can all differ. A 10 mm total difference is therefore not a guaranteed 10 mm increase in practical contact height.

Yonex’s own ASTROX 88 S/D design explanation positions its 5 mm and 10 mm longer models differently, while also describing different sweet-spot and weight-distribution choices. That is a useful example of a bundled design concept, not a controlled test proving that length caused the claimed result.

How do you check the total length?

Use a straight metric rule as a home screen: align the racket without bending the shaft, then measure from the furthest end of the butt cap to the furthest outside point at the top of the head. Record the model, item code, and grip state with the result.

1. Lay the racket flat beside a rigid ruler or straight tape.
2. Square the butt and head to the measuring line; do not compress the butt cap.
3. Repeat the reading rather than rounding a borderline value down.
4. If tournament compliance is close or disputed, ask the event referee or appropriate equipment authority instead of treating the home reading as a ruling.

For the full width and string-bed workflow, use the companion guide to badminton racket length rules and measuring.

What does the law say about modifications?

Under BWF Law 4, the racket must be free of attached objects and protrusions except those used solely and specifically to limit or prevent wear or vibration, distribute weight, or secure the handle by cord to the player’s hand, with reasonable size and placement for those purposes. The law does not provide a broad named list of approved grip, ink, and tape modifications.

The law also prohibits a device that makes it possible to change the racket’s shape materially. Under Law 5, BWF decides equipment-compliance questions. That wording is why an ordinary-looking add-on should not be declared tournament-legal from a generic article when its purpose, size, placement, or effect is unclear.