---
product_id: 42411432
title: "Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm"
brand: "union sport"
price: "€ 365.09"
currency: EUR
in_stock: true
reviews_count: 2
url: https://www.desertcart.fi/products/42411432-harz-mxsl-performance-bike-seat-saddle-high-performance-ultra-light
store_origin: FI
region: Finland
---

# Ultra-Light 135g Double Pivot System Impact Tested Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm

**Brand:** union sport
**Price:** € 365.09
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate Your Ride - Where Comfort Meets Performance!

## Quick Answers

- **What is this?** Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm by union sport
- **How much does it cost?** € 365.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/42411432-harz-mxsl-performance-bike-seat-saddle-high-performance-ultra-light)

## Best For

- union sport enthusiasts

## Why This Product

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

## Key Features

- • **Peace of Mind:** With a manufacturer warranty and crash replacement, ride confidently knowing you're covered.
- • **Unleash Your Ride:** Experience unparalleled comfort with our Double Pivot System, designed for optimal power transfer.
- • **Gel-Padded Comfort:** Enjoy long rides with our gel pad technology that cushions every bump while keeping you in control.
- • **Durability Meets Design:** Crafted from full carbon fiber, this saddle is not just lightweight but also built to withstand the rigors of the road.
- • **Featherlight Performance:** Weighing in at just 135g, this saddle is engineered for speed without compromising on comfort.

## Overview

The Harz MXSL Performance Bike Seat Saddle is a high-performance, ultra-light bicycle seat made from full carbon fiber, weighing only 135g. It features a Double Pivot System for enhanced comfort and efficient power transfer, along with a gel pad for added cushioning. This saddle is impact tested and comes with a manufacturer warranty and crash replacement for peace of mind.

## Description

Full description not available

## Features

- Available in: Carbon spec 170g, Carbon Composite spec 210g, Polycarbonate spec 230g.
- Double Pivot System Designed for Comfort While Maintaining an Efficient Power Transfer.
- Minimal Flexibility for the most Power Transfer & Road Feedback.
- Impact & Field Tested. Quality Control Passed.
- Manufacturer Warranty and Crash replacement Available.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Bike Type | Road Bike |
| Pad Type | Gel Pad |
| Outer Material | Carbon Fiber |
| Material Type | harz |
| Color | Black |

## Product Details

- **Brand:** Union Sport
- **Color:** Black
- **Material:** harz
- **Outer Material:** Carbon Fiber
- **Pad Type:** Gel Pad

## Images

![Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm - Image 1](https://m.media-amazon.com/images/I/71JD0D0mIfL.jpg)
![Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm - Image 2](https://m.media-amazon.com/images/I/712z02iH9PL.jpg)
![Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm - Image 3](https://m.media-amazon.com/images/I/71XpCIFn0fL.jpg)
![Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm - Image 4](https://m.media-amazon.com/images/I/71t84XIBbmL.jpg)
![Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm - Image 5](https://m.media-amazon.com/images/I/61bhGhmWyPL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    They are still missing it !
  

*by D***S on Reviewed in the United States on July 31, 2021*

Just puchased the Union Sport Harz MXSL  and I was hoping for a stiff carbon shell (which this has) But with ample padding.  This definitely does not have the padding.I cant understand why they can't maje a carbon shell with lots of padding. Some of us like a hard shell with gel and more padding. I was really hoping this had what it takes to be different but they are all worried about weight.If u made a carbon shell but put 8-10 more grams into the padding for us long distance riders we would buy it.  Just make a limited supply (like 50). I think u would be supprised at how fast thet would sell

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great saddle.  Have two now.
  

*by A***R on Reviewed in the United States on July 1, 2017*

Great saddle. Looks great and feels great.  Have two.  Harz all black and black/orange

## Frequently Bought Together

- Union Sport Harz MXSL Performance Bike Seat Saddle - High Performance Ultra-Light Bicycle Seat | Full Carbon Fiber | 135mm
- Hapleby Premium Bike Pedals of 9/16 Inch, Professional Mountain and Road Bike Flat Pedal with 2 Sealed Bearings, Wide Paltform and Lightweight of Bicycle Pedals, Come with Pedal Wrench 1PCS

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**Shop now:** [https://www.desertcart.fi/products/42411432-harz-mxsl-performance-bike-seat-saddle-high-performance-ultra-light](https://www.desertcart.fi/products/42411432-harz-mxsl-performance-bike-seat-saddle-high-performance-ultra-light)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-09*