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Seat Post 23.4 mm Diameter 25 mm to 27.2 mm

Sale price: $24.99 Regular price:
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Sale price: $24.99 Regular price:

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Model: 8350482

Product Features

A photo of the Seat Post 23.4 mm Diameter 25 mm to 27.2 mm in use

Seat Post 23.4 mm Diameter 25 mm to 27.2 mm is designed for 0.92" frames with 1" to 1.07" adapters. Length: 13".

Black seat post for 23.4 mm frames with 25 mm to 27.2 mm adapters.


For 23.4 mm frames, with 25 to 27.2 mm adapters and saddles with rails.


6061 aluminum body and saddle rail clamp.

Easy to use

Adjustable and tilting seat clamp.

Product Customer Reviews

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177 Reviews
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Seat Post 23.4 mm Diameter 25 mm to 27.2 mm,black
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not 23mm - mine is 21mm - totally unusable

My old bike has a 23mm seat post, I found this product that says it's 23.4mm - that'll do I thought. I went to my local Decathlon, found the item, clearly marked up and advertised as for bikes that take 23mm (certainly no mention of 21mm anywhere), It looks like a decently made product and I don't know if mine is defective? it definitely has 23.4mm printed on it. Anyway, I didn't have my vernier callipers on me at the time to check so it was only when I got home and tried to fit it that I realised it is way too thin. I didn't intend to use an adapter but I tried both the sleeves that came with it, one was still too thin to tighten up the post enough to actually ride (the seat would still turn and no doubt sink if I sat on it), the other wouldn't fit into the frame with the post in it at all. So if you are looking for a 23mm seat post this probably isn't the right product (even though it says it is)

Hello. Thank you for your feedback which is very interesting. I have measured a couple of the seat posts currently in store to double check for any error and they measured up at 23.4mm as advertised. Please do return the seat post to your nearest store to be double checked and swapped for the right size if required.

MICHAEL, Road Cycling Leader, DECATHLON UK

Easy to assemble

Good product - a replacement for my previous seat post.

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Muy robusta y de buena calidad, trae 2 ajustes para que encaje. En mi caso usé el de 25. Estupenda para subir la altura del sillín de una bici de 24". Gracias

Muy buen producto.

Lo estaba necesitando y me va muy bien, gracias.

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Muy pesada

Tosca y pesada

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Fácil de colocar y buena adaptabilidad por disponer de varias opciones.

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Desde q llevó comprando en Dwcathlon nunca he teni

Muy buena

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Una pieza robusta y eficaz

Cumple lo que promete. Buena calidad de los materiales y genial los adaptadores, evitan cambios y devoluciones. También de gran resistencia.

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Tija sillin

Producto sencillo que cumplió mis expectativas

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Tija de sillín. La más adecuada

Está destinada a una bici bastante pasada de moda y no se trata de hacer una gran inversión, por lo que su relación calidad/precio/peso es adecuada; las habrá mas ligeras, pero de mayor precio, asi que estoy contenta. Trae además dos accesorios de ajuste al tubular; pero como digo, el cuadro está desfasado, por lo que he no me ha servido ninguno y he tenido que hacer un "apaño" a la vieja usanza para que el sillín quedara fijo y alineado. Aunque eso no es culpa de la tija...

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Un buen producto.

Estoy devolviendo a la carretera mi antigua bicicleta.Esta tija me a facilitado la vida gracias a sus adaptadores. Muy buen diseño. Se adapta facilmente a cualquier asiento.

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ras peu de modele…

ras peu de modele

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Bonjour à toute l'équipe…

Bonjour à toute l'équipe Decathlon Cormontreuil. Service très professionnel et un très bon accueil.

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Bons conseils en magasin…

Bons conseils en magasin

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Tige de selle installée sur un vélo ancien, et qui est depuis inutilisée... Après 2 sorties, et à force de devoir m'arrêter pour la remonter, je l'ai simplement enlever pour ne plus m'en servir. Tige installé pour le personnel de Decathlon, qui au passage, a abimé la peinture toute neuve du vélo en forçant comme un ân. pour la rentrer... Très déçu.

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Additional Product Information



  • 100% Aluminium 6061



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.

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    Research and development

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    minimize manufacturing costs

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual