---
product_id: 287612264
title: "Funn RSX Mountain Bike Direct Mount Stem with 31.8mm Handlebar Clamp, 2 Piece Lightweight Split Design for Dual Crown Forks, Adjustable Extension from 45-50mm with 30mm Rise (Black)"
brand: "funn"
price: "1137 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/287612264-funn-rsx-mountain-bike-direct-mount-stem-with-31-8mm
store_origin: DK
region: Denmark
---

# Adjustable extension: 45-50mm length with 30mm rise Ultra-lightweight at just 240g CNC machined aerospace-grade 6061 aluminum Funn RSX Mountain Bike Direct Mount Stem with 31.8mm Handlebar Clamp, 2 Piece Lightweight Split Design for Dual Crown Forks, Adjustable Extension from 45-50mm with 30mm Rise (Black)

**Brand:** funn
**Price:** 1137 kr
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Funn RSX Mountain Bike Direct Mount Stem with 31.8mm Handlebar Clamp, 2 Piece Lightweight Split Design for Dual Crown Forks, Adjustable Extension from 45-50mm with 30mm Rise (Black) by funn
- **How much does it cost?** 1137 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/287612264-funn-rsx-mountain-bike-direct-mount-stem-with-31-8mm)

## Best For

- funn enthusiasts

## Why This Product

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

## Key Features

- • **Sleek, Stealthy Style:** Matte black finish and split 2-piece design add a modern, minimalist aesthetic that elevates your bike’s look and feel.
- • **Lightweight Yet Robust:** At only 240 grams, this stem delivers pro-level strength without weighing you down—ideal for aggressive downhill and off-road adventures.
- • **Customizable Reach & Rise:** Adjustable extension from 45mm to 50mm combined with a 30mm rise lets you dial in your perfect riding position for maximum comfort and performance.
- • **Precision Engineered Strength:** CNC machined from aerospace-grade 6061 aluminum for unmatched durability and rigidity without the weight penalty.
- • **Tailored Fit for Dual Crown Forks:** Direct mount design perfectly compatible with dual crown forks, ensuring seamless integration and superior control on rugged trails.

## Overview

The Funn RSX Mountain Bike Direct Mount Stem is a lightweight, CNC-machined aluminum component designed specifically for dual crown forks. Featuring an adjustable extension from 45 to 50mm and a 30mm rise, it offers customizable fit and enhanced control for downhill and off-road riders. Weighing just 240g, it combines durability, precision, and sleek aesthetics to upgrade your mountain biking experience.

## Description

Funn RSX Mountain Bike Direct Mount Stem with 31.8mm Handlebar Clamp, 2 Piece Lightweight Split Design for Dual Crown Forks, Adjustable Extension from 45-50mm with 30mm Rise (Black)

## Features

- Make sure the RSX fits correctly: the RSX is available for handlebars with a diameter of 31.8 mm or 35 mm. This version is for 31.8mm only. Please check your handlebar before purchase and make sure you order the correct version.
- The RSX Direct Mount Stem is specifically designed for use with a Dual Crown fork, making it an excellent choice for those who need a stem for their off-road or downhill bike.
- The RSX bike stem is precision CNC machined from aerospace grade 6061 alloy to provide plenty of support and rigidity while keeping the weight as low as possible.
- ADJUSTABLE EXTENSION This is a beautifully simple but brutally robust bike component with integrated adjustment, offering lengths of 45mm and 50mm with a 20mm and 30mm raise.
- Choose the model RSX Direct Mount Stem with 31.8mm handlebar bore and 30mm rise for a reliable and stylish upgrade for your Sur Ron bike.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | FUNN |
| Part number | 4712931183733 |
| Item Weight | 240 g |
| Product Dimensions | 10 x 10 x 10 cm; 240 g |
| Item model number | 4712931183733 |
| Size | 30mm Anstieg |
| Color | Black |
| Style | Direct RSX Rise +30° |
| Material | Aluminum |
| Item Package Quantity | 1 |
| Number Of Pieces | 2 |
| Specification met | Yes |
| Included components | Systems RSX+30° 31.8 x 45-5 mm, black |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Aluminum
- **Brand:** Funn
- **Item dimensions L x W x H:** 10 x 10 x 10 centimeters
- **Colour:** Black
- **Style:** Direct RSX Rise +30°

## Images

![Funn RSX Mountain Bike Direct Mount Stem with 31.8mm Handlebar Clamp, 2 Piece Lightweight Split Design for Dual Crown Forks, Adjustable Extension from 45-50mm with 30mm Rise (Black) - Image 1](https://m.media-amazon.com/images/I/61txEjiJQ2L.jpg)

## Available Options

This product comes in different **Item Display Length, Color** options.

## Questions & Answers

**Q: What size are the bolts?**
A: The bolt is M6 with 20mm thread section with 1mm washer.

**Q: Does it come with bolts?**
A: Yes.

## Frequently Bought Together

- Funn RSX Mountain Bike Direct Mount Bike Stem with 31.8mm Bar Clamp, 2 Pieces Lightweight Split Design for Dual Crown Forks, Adjustable Extension 45-50mm
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**Shop now:** [https://www.desertcart.dk/products/287612264-funn-rsx-mountain-bike-direct-mount-stem-with-31-8mm](https://www.desertcart.dk/products/287612264-funn-rsx-mountain-bike-direct-mount-stem-with-31-8mm)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-22*