---
product_id: 473896530
title: "BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black)"
brand: "besportble"
price: "€ 1.45"
currency: EUR
in_stock: false
url: https://www.desertcart.fr/products/473896530-besportble-seat-post-tube-27-2-mm-to-30-9
store_origin: FR
region: France
---

# Precision-machined aluminum alloy Rustproof anodized surface Fits 27.2mm to 30.9mm seatposts BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black)

**Brand:** besportble
**Price:** € 1.45
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♀️ Upgrade your ride, no compromises.

## Quick Answers

- **What is this?** BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) by besportble
- **How much does it cost?** € 1.45 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/473896530-besportble-seat-post-tube-27-2-mm-to-30-9)

## Best For

- besportble enthusiasts

## Why This Product

- Trusted besportble brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless Size Upgrade:** Effortlessly adapt your bike seatpost from 27.2mm to 30.9mm for a perfect fit.
- • **Sleek Anodized Finish:** Rustproof black coating ensures long-lasting style and resilience on every adventure.
- • **Lightweight Durability:** Crafted from premium aluminum alloy, combining strength with featherlight performance.
- • **Universal Compatibility:** Ideal for mountain, road, and hybrid bikes—upgrade your ride without limits.
- • **Precision Anti-Slip Design:** Machined for exact fit and enhanced grip, preventing unwanted seatpost movement.

## Overview

The BESPORTBLE Seat Post Tube Shim is a precision-machined aluminum alloy adapter that converts a 27.2mm seatpost to fit a 30.9mm frame. Lightweight, rustproof, and designed with an anti-slip finish, it offers universal compatibility for mountain and road bikes, ensuring a secure and stylish upgrade for your cycling setup.

## Description

DescriptionSeat Post Adapter Shim, Mountain Bike Seat Post Tube Seat Post Reducing Sleeve Shim, Bicycle Seat Post Tube Adapter.FeaturesColor: Black.Size: 1.41 x 0.54 x 0.85 cm.Material: Aluminum alloy.Mountain Bike Seatpost Seat tube Reducing sleeve 27.2 turn 30.9mm.Package Including1 x seatpost seat tube

## Features

- At this point will be reduced casing installed to the installation of the installation of the aperture. Seat Post Tube 27.2 Turn 30.9 Dead Fly Black Aluminum Alloy Reducing Sleeve Adapter Seat Post Tube for Road Bike Bicycle.
- Material: Bike seat tube reducer sleeve is made of high quality aluminum alloy machining Surface anodizing, strong and rustproof, lightweight and durable.
- Advantage: Full precision machining, anti-slip. Use this seatpost sleeve adapter ring, you can change the bicycle seat tube to the size you want.
- Tips: Please check your bike frame seat tube outside diameter. Measure the inside diameter of your old clamp. Or measure the outside diameter of your seat tube (on your bike frame). Then make a right choice.
- Compatibility: Suitable for MTB, mountain bikes, road bikes, etc. Efficient and convenient, it is the best choice for your ride.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Bike Type | Mountain Bike |
| Color | Black |
| Material Type | Aluminum |
| Outer Material | aluminum alloy |
| Batteries Included? | No |
| Brand | BESPORTBLE |
| Manufacturer | BESPORTBLE |
| Item model number | 2CROYWR14F313214OWPZSFJ |
| Product Dimensions | 1.41 x 0.54 x 0.85 cm; 27 g |
| ASIN | B087BRNL44 |

## Product Details

- **Colour:** Black
- **Material:** Aluminum
- **Brand:** BESPORTBLE
- **Bike type:** Mountain Bike
- **Manufacturer:** BESPORTBLE

## Images

![BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) - Image 1](https://m.media-amazon.com/images/I/51LUtupHxNL.jpg)
![BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) - Image 2](https://m.media-amazon.com/images/I/510COLL0fsL.jpg)
![BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) - Image 3](https://m.media-amazon.com/images/I/41+93AYpx0L.jpg)
![BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) - Image 4](https://m.media-amazon.com/images/I/51IlTZqeDmL.jpg)
![BESPORTBLE Seat Post Tube 27.2 MM to 30.9 MM Seatpost Shim Seatpost Sleeve for Bicycles Mountain Bikes (Black) - Image 5](https://m.media-amazon.com/images/I/51nKZ2-VCQL.jpg)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-29*