---
product_id: 3379156
title: "M-Wave Seatpost Clamp with Rack Mounts"
brand: "m-wave"
price: "€ 0.38"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.pt/products/3379156-m-wave-seatpost-clamp-with-rack-mounts
store_origin: PT
region: Portugal
---

# Includes Allen screws for easy install Ultra-lightweight at just 37g Alloy metal build for durability M-Wave Seatpost Clamp with Rack Mounts

**Brand:** m-wave
**Price:** € 0.38
**Availability:** ❌ Out of Stock

## Summary

> 🚴‍♂️ Upgrade your ride with the ultimate rack-ready seatpost clamp!

## Quick Answers

- **What is this?** M-Wave Seatpost Clamp with Rack Mounts by m-wave
- **How much does it cost?** € 0.38 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/3379156-m-wave-seatpost-clamp-with-rack-mounts)

## Best For

- m-wave enthusiasts

## Why This Product

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

## Key Features

- • **Sleek Stealth Black:** Matte black finish that blends effortlessly with any bike frame
- • **Load with Confidence:** Supports up to 1000 PSI tensile strength for secure cargo hauling
- • **Featherweight Strength:** Robust alloy clamp weighing less than 37 grams—carry more, weigh less
- • **Rack-Ready Reinvention:** Integrated threaded eyelets for seamless rear rack mounting
- • **Precision Fit Guarantee:** Designed with exact sizing advice to ensure perfect clamp fit every time

## Overview

The M-Wave Seatpost Clamp with Rack Mounts is a precision-engineered alloy clamp featuring integrated threaded eyelets for rear rack attachment. Weighing only 37 grams and finished in sleek black, it offers a lightweight yet durable solution for bikes lacking traditional rack mounting points. Complete with Allen screws and designed to support up to 1000 PSI tensile strength, it ensures a secure, professional-grade fit for enhanced cargo carrying capability.

## Description

This is a unique seat tube clamp from M-Wave. It contains threads to provide you with another fixation point for a rear rack. This is the kind of innovation you've come to expect from M-Wave.

Review: a must have for mounting a rear bike rack. - very well made,fit like a glove & fixed the carrier issue easily.
Review: Works Great! Know your bike before buying! - This does exactly what I wanted to do. It's strong and fit perfectly. I saw some bad reviews about people feeling like they didn't get the proper size. Please be aware that your seatpost size IS NOT the size to get for this clamp. If you can't find your seatpost clamp size online, contact the manufacturer to ask. My seatpost is something like 27.6mm, but the clamp I needed to get was 31.8mm. As soon as I got it in the mail I checked the size and it was a perfect fit. The only other thing to consider is if your bike frame is designed and rated to handle the abuse of a rear rack and cargo. Sometimes the bike doesn't have the eyelets because it's not meant to carry cargo, so if you're not sure, contact your bike manufacturer to ask. Trek was happy to help me, and it only took a out 5 minutes to get all the info I needed to feel safe getting this and putting a rack on. In case anyone is wondering, I put this on a 2023 Trek FX Sport 6, which is a full carbon fiber frame hybrid bike that is meant to handle moderate gravel and trails. It has eyelets lower on the frame near the cassette for a rack but not on the frame near the seatpost where you'd usually have eyelets for a rear rack, so this product was exactly what I needed.

## Features

- Allows for another fixation point for your rear rack
- All the functionality of an M-Wave seat tube clamp
- Black in color to make it blend in nicely with your bike
- Eyelets for rear rack, Allen screws included
- Weighs less than 35 grams
- Alloy seat clamp with threads for luggage carrier fixation
- 37g

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001V537I0 |
| Best Sellers Rank | #133,570 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #41 in Bike Seat Clamps |
| Brand | M-Wave |
| Brand Name | M-Wave |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 616 Reviews |
| Global Trade Identification Number | 04015493250784 |
| Item Dimensions | 11.81 x 11.81 x 11.81 inches |
| Item Weight | 0.04 kg |
| Item dimensions L x W x H | 11.81 x 11.81 x 11.81 inches |
| Manufacturer | Cycle Force Group |
| Manufacturer Part Number | Cicli Bonin_CMC633 |
| Material | Metal |
| Material Type | Metal |
| Model Number | 12508501 |
| Number of Packs | 1 |
| Style | Unique |
| Style Name | Unique |
| Tensile Strength | 1000 psi |
| UPC | 698238400503 |

## Product Details

- **Brand:** M-Wave
- **Color:** Black
- **Global Trade Identification Number:** 04015493250784
- **Item Weight:** 0.04 Kilograms
- **Item dimensions L x W x H:** 11.81 x 11.81 x 11.81 inches
- **Manufacturer:** Cycle Force Group
- **Material:** Metal
- **Style:** Unique
- **Tensile Strength:** 1000 Pounds Per Square Inch
- **UPC:** 698238400503

## Images

![M-Wave Seatpost Clamp with Rack Mounts - Image 1](https://m.media-amazon.com/images/I/51F+qbtv9KL.jpg)
![M-Wave Seatpost Clamp with Rack Mounts - Image 2](https://m.media-amazon.com/images/I/61D8rBnmQ2L.jpg)
![M-Wave Seatpost Clamp with Rack Mounts - Image 3](https://m.media-amazon.com/images/I/51r+udFYE1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ a must have for mounting a rear bike rack.
*by R***R on April 3, 2026*

very well made,fit like a glove & fixed the carrier issue easily.

### ⭐⭐⭐⭐⭐ Works Great! Know your bike before buying!
*by B***H on June 23, 2023*

This does exactly what I wanted to do. It's strong and fit perfectly. I saw some bad reviews about people feeling like they didn't get the proper size. Please be aware that your seatpost size IS NOT the size to get for this clamp. If you can't find your seatpost clamp size online, contact the manufacturer to ask. My seatpost is something like 27.6mm, but the clamp I needed to get was 31.8mm. As soon as I got it in the mail I checked the size and it was a perfect fit. The only other thing to consider is if your bike frame is designed and rated to handle the abuse of a rear rack and cargo. Sometimes the bike doesn't have the eyelets because it's not meant to carry cargo, so if you're not sure, contact your bike manufacturer to ask. Trek was happy to help me, and it only took a out 5 minutes to get all the info I needed to feel safe getting this and putting a rack on. In case anyone is wondering, I put this on a 2023 Trek FX Sport 6, which is a full carbon fiber frame hybrid bike that is meant to handle moderate gravel and trails. It has eyelets lower on the frame near the cassette for a rack but not on the frame near the seatpost where you'd usually have eyelets for a rear rack, so this product was exactly what I needed.

### ⭐⭐⭐⭐ Great with a small caveat
*by I***S on February 14, 2021*

I love this product! It has allowed me to lower the seat on my ebike by about six inches. This is great! Now I can sit on my ebike without feeling like I’m going to fall over, all while retaining my rear basket and removing it’s ridiculous mounting point to my seat post. If I love this product then why only four stars? The mounting holes for the rear basket are far too close. They should be spaced about and inch or two further apart. Yes, they may require a bit more material to build them this way, but in doing so they can alleviate the stress that is placed on the hardware of your rear bracket/basket. Otherwise, it works as intended, and is a good alternate choose to seat post mounting.

## Frequently Bought Together

- M-Wave Seatpost Clamp with Rack Mounts
- Ibera Bike Rack - Bicycle Touring Carrier Plus+ for Disc Brake/Non-Disc Brake Mount, Fat Tire Bikes, Frame-Mounted for Heavier Top & Side Loads, Height Adjustable for 26"-29" Frames
- WEEROCK Bike Seat Clamp 31.8mm/ 1.25 inch with Installation Holes for Bicycle Rear Rack Bike Cargo Rack Aluminium Alloy Seat Post Clamps, Black

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---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-07*