---
product_id: 473995224
title: "EXA Form Upgraded Speed Up 27.2mm/30.9mm/31.6mm Cable-Less Hydraulic Dropper Seatpost, 100mm/120mm/125mm/150mm Travel Dropper Post for MTB/E-Bike/Road Bike"
brand: "coomeng"
price: "₩232943"
currency: KRW
in_stock: true
reviews_count: 13
category: "Coo Meng"
url: https://www.desertcart.kr/products/473995224-exa-form-upgraded-speed-up-27-2mm-30-9mm-31
store_origin: KR
region: South Korea
---

# 3 diameter options for perfect fit 7075 alloy for lightweight durability Cable-less hydraulic system for sleek install EXA Form Upgraded Speed Up 27.2mm/30.9mm/31.6mm Cable-Less Hydraulic Dropper Seatpost, 100mm/120mm/125mm/150mm Travel Dropper Post for MTB/E-Bike/Road Bike

**Brand:** coomeng
**Price:** ₩232943
**Availability:** ✅ In Stock

## Summary

> 🚵‍♂️ Elevate your ride, ditch the cables, own every trail!

## Quick Answers

- **What is this?** EXA Form Upgraded Speed Up 27.2mm/30.9mm/31.6mm Cable-Less Hydraulic Dropper Seatpost, 100mm/120mm/125mm/150mm Travel Dropper Post for MTB/E-Bike/Road Bike by coomeng
- **How much does it cost?** ₩232943 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/473995224-exa-form-upgraded-speed-up-27-2mm-30-9mm-31)

## Best For

- coomeng enthusiasts

## Why This Product

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

## Key Features

- • **Trail-Ready Simplicity:** Hydraulic dropper action lets you adjust on the fly with a simple lever pull—stay agile and in control.
- • **Effortless, Cable-Free Setup:** Install in minutes with no cables or housing—just insert, lock, and ride.
- • **Premium Lightweight Strength:** Crafted from aerospace-grade 7075 alloy, combining durability with featherlight performance.
- • **Tailored Fit, Zero Guesswork:** Choose from 27.2mm, 30.9mm, or 31.6mm diameters to match your bike frame perfectly—no compromises.
- • **Smooth Infinite Adjustability:** Fine-tune your seat height anywhere within 100-150mm travel for ultimate riding comfort and control.

## Overview

The EXA Form Upgraded Speed Up Dropper Seatpost offers a cable-less hydraulic system available in three diameters (27.2mm, 30.9mm, 31.6mm) and multiple travel options (100mm to 150mm). Made from durable yet lightweight 7075 alloy, it installs easily without cables or housing and provides infinite seat height adjustability for MTB, E-Bike, and road bike riders seeking seamless performance and comfort.

## Description

desertcart.com : EXA Form Upgraded Speed Up 27.2mm Cable-Less Hydraulic Dropper Seatpost, 100mm Travel Dropper Post for MTB/E-Bike/Road Bike-27.2mm*410mm : Sports & Outdoors

Review: Great simple office chair dropper, I own two and love them - Love this post so far. It is simple to install and works as expected. I am heavy enough that I have no trouble putting it down. I can even put it down while standing next to the bike and pushing it down with my hand. I don't need to apply too much pressure to push it down even when just pushing on the seat. I own the 100mm version for my 2008 Kona Jake 58 cm and a 120mm for my 2010 Kona Jake 56cm. This allows me to go from max height for my chimp-like short legs and still be able to go all the way down to the collar which puts the seat about 1.5" from the top tube for max flexibility on descents. You can really have the best of both worlds with this. The only downside to this is that you must take a hand off the bars to raise/lower it so it is best on trails that I have memorized as I can lower where it isn't too rough ahead of the section I want it down for. As a rider who is new to droppers, I have no issue most of the time if I can't drop it as I am used to getting up over the seat if need be but it sure is nice to get it down about halfway for most things. This keeps the nose of the seat where I have pretty good control with my legs on the sides of the seat. For small jumps all of the way down is best. This is simple and effective and requires no extra cables which I appreciate. I try hard to keep it clean and hope that they last a long time.
Review: Just what I needed! - I recently bought a Juiced CCX e bike which stands taller than my pedal road bike. Road bike measures about 29 inches from center of seat to center of BB, along the seat post. In order to maintain that comfortable spread, my seat ends up being almost two inches further from the ground, and I can barely touch the ground with my tip toes. This is not good for an 80-year-old man on a 65+ pound bike. This dropper post allows me to lower seat to easy mount/dismount position, then once on, rise to my ideal riding position. It might not be ideal for a mountain biker who needs to raise and lower the seat more often because it is a little awkward to grasp lever under the seat, but for someone like me, it's a simple, affordable solution. It also seems very well made, works like a charm when I ease off the seat and lift the lever, I can hear a slight sound when the seat extends fully.

## Features

- 3 Diameters Are Available: 27.2mm, 30.9mm, 31.6mm are all available for sale, it is very important to choose the correct diameter of seatpost according to the inner diameter of your bike frame. If you are not sure how to choose, please feel free to contact us for help.
- Easy Installation: no cables or housing, just gently insert the purchased seat tube into the frame, and then lock it. IMPORTANT: Insertion is required to the minimum insertion depth scale.
- Simple Operation: Just pull the lever and sit to adjust seat height.
- Infinitely Adjustable: Seat height can be set anywhere in travel range.
- Durable and Lightweight: Hydraulic dropper integrated inside 7075 alloy tube.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B9KC6VGL |
| Best Sellers Rank | #75,449 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #34 in Bike Seat Posts |
| Brand Name | CooMeng |
| Customer Reviews | 4.2 4.2 out of 5 stars (225) |
| Date First Available | August 12, 2022 |
| Item Dimensions LxWxH | 1.07 x 1.07 x 16.14 inches |
| Item Package Dimensions L x W x H | 16.89 x 3.98 x 2.44 inches |
| Manufacturer | CooMeng |
| Model Name | Diameter: 27.2mm |
| Package Weight | 0.8 Kilograms |
| Part Number | Speed Up 27.2mm*410mm*100mm |
| Size | Length 410mm X Travel 100mm |
| Suggested Users | unisex |
| UPC | 602581929802 |
| Warranty Description | Non-artificial damage, one year warranty. |

## Product Details

- **Brand:** CooMeng
- **Color:** Diameter: 27.2mm
- **Item Weight:** 0.8 Kilograms
- **Material:** Aluminum
- **Product Dimensions:** 1.07"W x 16.14"H

## Images

![EXA Form Upgraded Speed Up 27.2mm/30.9mm/31.6mm Cable-Less Hydraulic Dropper Seatpost, 100mm/120mm/125mm/150mm Travel Dropper Post for MTB/E-Bike/Road Bike - Image 1](https://m.media-amazon.com/images/I/51tdztlWYmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great simple office chair dropper, I own two and love them
*by A***R on October 28, 2025*

Love this post so far. It is simple to install and works as expected. I am heavy enough that I have no trouble putting it down. I can even put it down while standing next to the bike and pushing it down with my hand. I don't need to apply too much pressure to push it down even when just pushing on the seat. I own the 100mm version for my 2008 Kona Jake 58 cm and a 120mm for my 2010 Kona Jake 56cm. This allows me to go from max height for my chimp-like short legs and still be able to go all the way down to the collar which puts the seat about 1.5" from the top tube for max flexibility on descents. You can really have the best of both worlds with this. The only downside to this is that you must take a hand off the bars to raise/lower it so it is best on trails that I have memorized as I can lower where it isn't too rough ahead of the section I want it down for. As a rider who is new to droppers, I have no issue most of the time if I can't drop it as I am used to getting up over the seat if need be but it sure is nice to get it down about halfway for most things. This keeps the nose of the seat where I have pretty good control with my legs on the sides of the seat. For small jumps all of the way down is best. This is simple and effective and requires no extra cables which I appreciate. I try hard to keep it clean and hope that they last a long time.

### ⭐⭐⭐⭐⭐ Just what I needed!
*by S***E on March 3, 2023*

I recently bought a Juiced CCX e bike which stands taller than my pedal road bike. Road bike measures about 29 inches from center of seat to center of BB, along the seat post. In order to maintain that comfortable spread, my seat ends up being almost two inches further from the ground, and I can barely touch the ground with my tip toes. This is not good for an 80-year-old man on a 65+ pound bike. This dropper post allows me to lower seat to easy mount/dismount position, then once on, rise to my ideal riding position. It might not be ideal for a mountain biker who needs to raise and lower the seat more often because it is a little awkward to grasp lever under the seat, but for someone like me, it's a simple, affordable solution. It also seems very well made, works like a charm when I ease off the seat and lift the lever, I can hear a slight sound when the seat extends fully.

### ⭐⭐⭐⭐ Works.
*by R***S on March 3, 2025*

After doing a lot of research, this is the cheapest decent office chair style dropper post I could find. The first one was pretty difficult to get it to drop, even with all my weight on it (180lbs.), so I sent it back and got another one, which was definitely easier, but sometimes I still have to pogo stick up and down a little bit to get it to drop, even after putting some stanchion lube on it. I read a lot of reports of the cheaper dropper post failing/breaking, but after some pretty extensive testing, this one's been pretty solid. For the price point, I definitely recommend it. It gets the job done. Did you find this review helpful?

## Frequently Bought Together

- EXA Form Upgraded Speed Up 27.2mm/30.9mm/31.6mm Cable-Less Hydraulic Dropper Seatpost, 100mm/120mm/125mm/150mm Travel Dropper Post for MTB/E-Bike/Road Bike
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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-18*