---
product_id: 445277831
title: "PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost"
brand: "plattbk"
price: "278 kr"
currency: DKK
in_stock: true
reviews_count: 8
url: https://www.desertcart.dk/products/445277831-plattbk-bike-seat-post-25-4-27-2-28-6
store_origin: DK
region: Denmark
---

# 5 diameter sizes - perfect fit for any bike 6061 aluminum alloy - ultra durable & lightweight Safety line mark - secure, precise installation PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost

**Brand:** plattbk
**Price:** 278 kr
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your ride with precision and style—because your bike deserves the best!

## Quick Answers

- **What is this?** PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost by plattbk
- **How much does it cost?** 278 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/445277831-plattbk-bike-seat-post-25-4-27-2-28-6)

## Best For

- plattbk enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Compatibility:** Ideal for road, MTB, fixed gear, downhill, and rail bikes—your all-terrain upgrade.
- • **Engineered for Endurance:** Crafted from premium 6061 aluminum alloy for a lightweight yet rock-solid ride.
- • **Safety First Installation:** Built-in safety line mark guarantees proper insertion depth for maximum stability and confidence.
- • **Corrosion-Resistant Finish:** Anodized black surface ensures your seatpost stays sleek and rust-free season after season.
- • **Precision Fit for Every Ride:** Choose from 25.4 to 31.6mm diameters to match your bike perfectly—no compromises.

## Overview

The PLATTBK Bike Seat Post is a 350mm long, anodized black aluminum alloy seatpost available in five diameters (25.4 to 31.6mm). Designed for durability and corrosion resistance, it features a safety line mark for secure installation and fits a wide range of bicycles including road, mountain, fixed gear, and downhill models.

## Description

PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost

## Features

- 【PAY ATTENTION】Please measure and confirm the exact post diameter required for your bike.
- 【MATERIAL】 Made of 6061 aluminum alloy, Lightweight strong and durable.Comes anodized in Black,Colorfast Surface,Great Anti-corrosion
- 【SIZE】Diameter: 25.4/27.2/28.6/30.9/31.6mm; Length:350mm;
- 【SAFE LINE MARK】There is a safety line mark on the seatpost. Please insert at least above the minimum safety line when installing the new seatpost.
- 【USE&FIT】Widely use in most road bicycles, fixed gear bicycles, mountain bikes, downhill bicycles, rail bikes, MTB, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | PLATTBK |
| Item Package Dimensions L x W x H | 15.63 x 3.9 x 2.2 inches |
| Package Weight | 0.37 Kilograms |
| Item Dimensions  LxWxH | 1.24 x 1.24 x 13.78 inches |
| Brand Name | PLATTBK |
| Part Number | Seatpost-31.6 |
| Size | 31.6mm |

## Product Details

- **Color:** Black
- **Material:** Aluminum
- **Brand:** PLATTBK
- **Bike Type:** Mountain Bike
- **Product Dimensions:** 1.24"W x 13.78"H

## Images

![PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost - Image 1](https://m.media-amazon.com/images/I/51dM5+KlD9L.jpg)
![PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost - Image 2](https://m.media-amazon.com/images/I/61ErzW+HNAL.jpg)
![PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost - Image 3](https://m.media-amazon.com/images/I/513N11xeWDL.jpg)
![PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost - Image 4](https://m.media-amazon.com/images/I/51rxSeMVZIL.jpg)
![PLATTBK Bike Seat Post 25.4/27.2/28.6/30.9/31.6 350mm Aluminum Alloy Road Bike MTB Seatpost - Image 5](https://m.media-amazon.com/images/I/614icXTS0HL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great!
*by J***R on June 8, 2025*

Needed another post for my bike that has another seat. This is a great choice and easy to swap. As a big guy, I don't have any worry about this.

### ⭐⭐⭐⭐⭐ Nice
*by M***S on April 22, 2025*

Nice sturdy seat post. Very good value. Let me set my seat back by a good once and a half.

### ⭐⭐⭐⭐⭐ High quality
*by C***N on December 23, 2024*

Works great and the seat doesn’t slip

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**Shop now:** [https://www.desertcart.dk/products/445277831-plattbk-bike-seat-post-25-4-27-2-28-6](https://www.desertcart.dk/products/445277831-plattbk-bike-seat-post-25-4-27-2-28-6)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-24*