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Perfly BST990, Badminton String

Sale price: $5.00 Regular price: $9.99

This badminton string is powerful and having comfortable impacting feel, as well as being the most powerful in our range. (0.66 mm string gauge)

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Sale price: $5.00 Regular price: $9.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8490727

Product Features

A photo of the Perfly BST990, Badminton String in use

Perfly BST990, Badminton String | Advanced badminton player who looks for very thin string gauge providing powerful strokes with crispy sound !

This badminton string is powerful and having comfortable impacting feel, as well as being the most powerful in our range. (0.66 mm string gauge)


Polymer multifilament core For optimum repulsion, power string gauge 0.66 MM

User comfort

Polymer Microfilaments core gauge 0.66 MM maximizes comfortable impact feel.


Polymer multifilament core with 0.66 MM gauge provides Ultimate Precision

Product Customer Reviews

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206 Reviews
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Perfly BST990, Badminton String,black
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Less color for choose

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Way Above The BG65

I've had this string on my racquet for quite some time. I find the durability extremely high compared to the Yonex BG65. The power and elasticity are also better I feel.

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String is extremely good

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Excellent Product

No issues till now with regular use. Better than the original string came with the racket.

String got cut while stiching

There were no stocks in the store got it online delivered from Other store and they broke it while netting. Very pathetic service

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string was broken within a day

Within a day the string was broken.Two days back I restringed the racquet now it’s broken

Hello Sandeep,

We are really sorry that you faced such an issue. We would like ask you on which racket did you put the strings and from where did you get the stringing done, like from Decathlon or outside Decathlon.

Please reply to this so that we can serve you better.

Thank you.


Badminton Racquet Restring

Good quality. The sales reps are helpful and courteous.

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Hello Chia, thank you for your time in leaving us with a 5-Star rating on our product & service. We are glad that we managed to restring your racket for the best performance for you on the court. Please let us know if there is anything else we can improve on in the future. Thank you once again for your time and we hope to serve you again soon!



with the recommendation from the customer service to use this string, it suits my badminton racket very well. Overall I am very satisfied with the string.

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Good product


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Control is good, repulsion power is good. Overall its a good string that can be at par with yonex,li-ning,victor strings but I don't find the hitting sound good, a bit dull when you hear it for a .66 gauge string. I leave at 4 stars due to disappointment from hitting sound.

HI Jov Sison,
Thank you for leaving us a review on Badminton string BST 990 Black(8490727).
Thank you for the great review! Do continue to write more reviews, so that we are able to understand your needs, and thus, improve on our product range :)
Once again, we really appreciate your time taken to give us your feedback. Yours Sportingly,

Shakur Khan

Cordaje de bastante buena calidad pero en mi caso,perdio tension muy rapidamente.

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Premier test Bst 990

Premier entraînement avec le Bst 990 . Très bonne sensation sur les smashs et le jeu a plat . Même le jeu au filet est plus que correct ( tension 10,5) le son est également agréable . Maintenant il reste a voir la résistance de ce cordage . Je jouais avec du bg80 power avant le bst990 et niveau qualité/prix je suis très content pour le moment

très bonne sensation…

très bonne sensation

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Très bon cordage…

Très bon cordage

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cordage fin et robuste.…

cordage fin et robuste. Un plus pour la vitesse

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Additional Product Information


Racket string

  • 50% Polyamide
  • 50% Resin

Proprietary polymer core proprietary polymer microfilaments

To prevent from tension loss and maximizes strength and durability For optimum repulsion, power and shot making Ultimate Precision



Product testing

Toxicology, solidity and durability tests are carried out for over 50 hours in our TechCenter labs, as well as on courts to test the strings in real-world playing conditions.

Storage instructions

Keep the string in dry place under normal natural weather condition.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
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    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual