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Btwin, Headset Stem Star Stopper

Sale price: $4.99 Regular price:

Aheadset stem stopper to ensure your headset remains stiffly in place by fastening the stem to the fork.

Color: Select a color
Size: Select a size
Sale price: $4.99 Regular price:

Free shipping over $35

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Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 5412836

Product Videos

Product Features

A photo of the Btwin, Headset Stem Star Stopper in use

Btwin, Headset Stem Star Stopper | fastening your 1-1/8" Aheadset stem and preventing any troublesome play in the headset due to a loose fit.

Aheadset stem stopper to ensure your headset remains stiffly in place by fastening the stem to the fork.


Aheadset stems with 1"1/8 pivot.


Stabilizes the headset avoiding looseness that can be harmful and dangerous.


Steel stem stopper.


1 oz.

Product Customer Reviews

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93 Reviews
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Btwin, Headset Stem Star Stopper,base color
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Headset stop.

Done exactly what purchased for to replace a worn part.

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Awesome Product

Just one sentence, value for money! It serves its purpose very well. I will say go for it!

Very basic

A simple and basic quality headset.

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Dear Ken, thank you for taking the time to write the review! We are truly sorry to hear that our product did not meet your expectations. We have read your feedback and would like to contact you personally in case you would like to highlight any other shortfalls in our product for us to improve ourselves in satisfying your needs as your satisfaction is our top priority.


Headset stem star stopper


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Hi Poh,

Thank you for taking the time to write a review on the Headset Stem Star Stopper! I am glad that this product has been working well for you.

At Decathlon, our mission is to make sports accessible for the many. It is our responsibility to ensure that our products are made to satisfy our users. 

Feel free to write a review on other Decathlon products and I hope to see you in our store soon! :)

Sport on safely!


Digital Interaction Relay

Gut, macht was es soll.

Bin zufrieden

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preis / Leistung stimmt. bin ganz zufrieden


Die Ausführung mit der Doppelkralle ist vorteilhaft und sorgt für einen festen und sicheren Sitz im Gabelschaft.Die Kralle sollte allerdings gerade und in der Höhe von 15mm in den Schaft eingeschlagen werden, am besten mit einem Einschlagwerkzeug ( wenn vorhanden) . Nach einer korrekten Montage lässt sich der Steuersatz umso genauer und feiner einstellen. Bei diesem Modell ist für die Schraube auch noch eine sinnvolle Gummikappe dabei, somit ist diese auch sehr gut vor Witterungseinflüssen geschützt.

Tolles Artikel

ich bin sehr zufrieden mit der Verkäufer. Empfehle ich gerne weiter.

Ajuste perfecto

Todo correcto

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Hola Manuel,

Muchas gracias por escribir tu opinión en la página web de Decathlon.

Te recuerdo que si no estás satisfecho con nuestros productos, tienes 60 dias para cambio y devoluciones para los productos de marca Decathlon y 30 dias para la marca internacional


Nuestros equipos trabajan para satisfacer a nuestr@s usuari@s ciclistas, buscando la mejor calidad y prestaciones con los precios más ajustados posible.

¡Cualquier cosa estoy disponible para ayudarte!

Te esperamos en Decathlon


Ylli Bodlli

Experto Mtb Decathlon



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tapa de potencia correcta

Recomendable, además tiene doble aro y se mete mucho mejor, porque no se tuerce al meterla en el tubo de la horquilla.

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Simple y fácil de poner

Ha sido sencillo ponerla sin herramienta específica con un poco de cuidado evitando que se tuerza. Dos minutos

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De momento da el servicio para lo que esta diseñado.

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Additional Product Information



  • 100% Aluminum


  • 100% Stainless steel


Have the assembly checked by a qualified technician.



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
  1. product-research

    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

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual