---
product_id: 5170202
title: "Origin8 Pro-Fit Alloy Seat Post"
brand: "origin8"
price: "€ 49.92"
currency: EUR
in_stock: true
reviews_count: 10
category: "Origin8"
url: https://www.desertcart.ie/products/5170202-origin8-pro-fit-alloy-seat-post
store_origin: IE
region: Ireland
---

# Micro-adjust 2-bolt clamp Ultra-light 331g AL6061-T6 alloy Precision 27.2mm diameter fit Origin8 Pro-Fit Alloy Seat Post

**Brand:** origin8
**Price:** € 49.92
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your ride with precision and style — because every millimeter counts!

## Quick Answers

- **What is this?** Origin8 Pro-Fit Alloy Seat Post by origin8
- **How much does it cost?** € 49.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/5170202-origin8-pro-fit-alloy-seat-post)

## Best For

- origin8 enthusiasts

## Why This Product

- Trusted origin8 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Saddle Tuning:** 2-bolt hinged clamp offers infinite micro-adjustments for personalized comfort and posture.
- • **Featherweight Durability:** Crafted from aerospace-grade AL6061-T6 alloy, balancing strength and minimal weight at just 331g.
- • **Seamless Fit, Zero Offset:** 27.2mm diameter with 0° setback for perfect saddle alignment and confident rides.
- • **Trusted Quality, Proven Legacy:** Origin8’s renowned craftsmanship guarantees reliability and style that professionals swear by.
- • **Extended Reach, Maximum Control:** Extra-long 400mm post length ensures versatile fit for a wide range of bike frames and rider heights.

## Overview

The Origin8 Pro-Fit Alloy Seat Post is a high-performance bicycle component featuring a precise 27.2mm diameter and zero setback for optimal saddle positioning. Constructed from lightweight yet durable AL6061-T6 alloy, it weighs approximately 331 grams. Its 2-bolt hinged clamp design allows for micro-adjustments to perfectly tune saddle angle, while the extra-long 400mm length accommodates diverse frame sizes. Trusted by cycling enthusiasts, this seat post combines quality, adjustability, and sleek design to enhance your riding experience.

## Description

Origin8 Pro-Fit Alloy Seat Post in multiple diameters and colors

Review: Hard to find. Glad Origin8 makes this - I looked and looked for a zero offset 26.6 mm seat post for my old bike, and I didn't find much. Luckily, I found this. First, some questions and answers: How is 400 mm measured? From the bottom of the tube to the center of the seat rail clamps. How much did it weigh? 331.4 g Why was that last question in the past tense? Because I cut 7" of tube off the bottom end. It leaves me plenty of insertable length (4" is the minimum), and it brought the weight down to 236.9 g. Makes me wish I cut off another 1/2", and I could have said I reduced the weight by 100 g. What is the finish of the inserted tube like? It's got grooves or ridges, whatever you want to call them, like a tube turned on a lathe? How deep? How rough? If I run my fingernail down the tube, I can hear a zipping sound, but I can by no means catch my fingernail in the grooves. When the tube is wiped with a cloth. it feels smooth, and no fibers catch on the surface. How does the seat rail clamp work? It is a rocker pulled into a saddle, and tightening the front screw while loosening the rear brings the saddle's nose down. Are there ridges on the rocker and inside the saddle, or is it smooth and infinitely adjustable? The latter. What country is it made in? Taiwan. Why Origin8 wouldn't advertise this fact, given the excellent reputation of various Taiwan bike parts manufacturers, I don't know (I love Dia-Compe and higher-end Tektro stuff). Even more mystifying is asking the desertcart community what country and getting the answer, "I don't know." Really, I wasn't asking you personally. I was asking people who know. I am more than satisfied with the quality of this seat post. It is well built, and it looks good on the bike. It is very easy to install and to install a saddle on it. All the parts stay together, no nuts or bolts have to be removed, and the rocker portion cannot fall out. It's easy to adjust the pitch (up/down angle) of the saddle. A 5 mm Allen wrench does it all. Tube diameter is accurate. It slides into the frame and clamps securely.
Review: Origin8, nice quality at a reasonable price - Origin8. Well-made and inexpensive. If you want fancier, or lighter, or name-brand, go for it. But if you want a quality part that does the job for an affordable price, I recommend Origin8.

## Features

- FIT FOR SEAT POST: Diameter: 27.2mm Post Length: 400mm. Setback: 0 °/0mm. Please confirm the seat post size you need before purchase
- LIGHTWEIGHT: AL6061-T6 alloy construction
- MICRO ADJUST: 2-bolt hinged clamp design
- EXTRA LONG: 400mm post length
- TRUSTED Origin8 BRAND that stands for quality and durability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000AO9NBS |
| Best Sellers Rank | #58,466 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #20 in Bike Seat Posts |
| Brand Name | Origin8 |
| Customer Reviews | 4.7 4.7 out of 5 stars (578) |
| Date First Available | October 18, 2001 |
| Included Components | Seatposts |
| Item Dimensions LxWxH | 5 x 2 x 15 inches |
| Item Package Dimensions L x W x H | 16.54 x 5.94 x 2.36 inches |
| Manufacturer | Origin8 |
| Model Name | Pro Fit Seatpost |
| Model Year | 2012 |
| Number of Items | 1 |
| Package Weight | 0.36 Kilograms |
| Part Number | 51683 |
| Size | 27.2 x 400mm |
| Style | Seatposts |
| Suggested Users | Does Not Apply |
| UPC | 072774516834 |
| Warranty Description | Limited Warranty |

## Product Details

- **Brand:** Origin8
- **Color:** Black
- **Item Weight:** 0.26 Pounds
- **Material:** Aluminum
- **Product Dimensions:** 1.07"W x 15.75"H

## Images

![Origin8 Pro-Fit Alloy Seat Post - Image 1](https://m.media-amazon.com/images/I/31Gf96O6bqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Hard to find. Glad Origin8 makes this
*by R***K on September 23, 2023*

I looked and looked for a zero offset 26.6 mm seat post for my old bike, and I didn't find much. Luckily, I found this. First, some questions and answers: How is 400 mm measured? From the bottom of the tube to the center of the seat rail clamps. How much did it weigh? 331.4 g Why was that last question in the past tense? Because I cut 7" of tube off the bottom end. It leaves me plenty of insertable length (4" is the minimum), and it brought the weight down to 236.9 g. Makes me wish I cut off another 1/2", and I could have said I reduced the weight by 100 g. What is the finish of the inserted tube like? It's got grooves or ridges, whatever you want to call them, like a tube turned on a lathe? How deep? How rough? If I run my fingernail down the tube, I can hear a zipping sound, but I can by no means catch my fingernail in the grooves. When the tube is wiped with a cloth. it feels smooth, and no fibers catch on the surface. How does the seat rail clamp work? It is a rocker pulled into a saddle, and tightening the front screw while loosening the rear brings the saddle's nose down. Are there ridges on the rocker and inside the saddle, or is it smooth and infinitely adjustable? The latter. What country is it made in? Taiwan. Why Origin8 wouldn't advertise this fact, given the excellent reputation of various Taiwan bike parts manufacturers, I don't know (I love Dia-Compe and higher-end Tektro stuff). Even more mystifying is asking the Amazon community what country and getting the answer, "I don't know." Really, I wasn't asking you personally. I was asking people who know. I am more than satisfied with the quality of this seat post. It is well built, and it looks good on the bike. It is very easy to install and to install a saddle on it. All the parts stay together, no nuts or bolts have to be removed, and the rocker portion cannot fall out. It's easy to adjust the pitch (up/down angle) of the saddle. A 5 mm Allen wrench does it all. Tube diameter is accurate. It slides into the frame and clamps securely.

### ⭐⭐⭐⭐⭐ Origin8, nice quality at a reasonable price
*by L***R on September 10, 2025*

Origin8. Well-made and inexpensive. If you want fancier, or lighter, or name-brand, go for it. But if you want a quality part that does the job for an affordable price, I recommend Origin8.

### ⭐⭐⭐⭐⭐ The best Seatpost design at a bargain
*by B***! on May 30, 2025*

Two-bolt microadjust seatposts such as this are my only choice. They offer infinitely variable angle adjustment and they never slip or work loose. The Oirigin 8 is as good as much more expensive brands.

## Frequently Bought Together

- Origin8 Pro-Fit Alloy Seat Post
- Park Tool PolyLube 1000 Bicycle Grease
- Origin8 Pro Threaded Headset, 1" Steerer

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---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-23*