---
product_id: 20172372
title: "MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed"
brand: "sram"
price: "847 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/20172372-mtb-gx-type-2-1-long-cage-rear-derailleur-black
store_origin: DK
region: Denmark
---

# Exact Actuation tech for precise shifting Long cage design for max chain wrap Roller bearing clutch reduces chain slap MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed

**Brand:** sram
**Price:** 847 kr
**Availability:** ✅ In Stock

## Summary

> 🚵‍♀️ Shift Like a Pro, Ride Like You Own the Trail

## Quick Answers

- **What is this?** MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed by sram
- **How much does it cost?** 847 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/20172372-mtb-gx-type-2-1-long-cage-rear-derailleur-black)

## Best For

- sram enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight & Sleek:** At just 302g with a stylish black finish, this derailleur blends high performance with modern aesthetics for the serious rider.
- • **Seamless Compatibility:** Designed for easy installation with all 10-speed SRAM drivetrains and standard 10x1 mounts—upgrade your ride without hassle.
- • **Clutch Stability Mastery:** Advanced roller bearing clutch system minimizes chain slap, delivering consistent drivetrain stability on the roughest terrain.
- • **Built to Endure Every Trail:** Durable long cage design maximizes chain wrap capacity, ensuring reliability on rugged mountain and gravel rides.
- • **Pinpoint Shifting Precision:** Experience ultra-smooth gear changes with SRAM's Exact Actuation technology, engineered for flawless 10-speed performance.

## Overview

The SRAM MTB GX Type 2.1 Long Cage Rear Derailleur is a precision-engineered 10-speed component featuring Exact Actuation technology for smooth, reliable shifting. Its durable long cage design offers maximum chain wrap capacity, while the roller bearing clutch system reduces chain slap for superior drivetrain stability. Lightweight and compatible with standard 10-speed SRAM setups, it’s the perfect upgrade for aggressive mountain and gravel cyclists seeking performance and style.

## Description

Sponsored Ad - MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed

## Features

- Enhanced shifting precision with SRAM GX Rear Derailleur featuring Exact Actuation technology for ultra-smooth, responsive gear changes.
- Constructed from durable materials with a long cage design, this derailleur offers reliable performance and maximum chain wrap capacity for 10-speed mountain biking and gravel adventures.
- Advanced roller bearing clutch system provides superior drivetrain stability and reduces chain slap, ensuring consistent shifting even on the most demanding terrains.
- Designed for compatibility with 10-speed SRAM drivetrain systems and standard 10x1 mount types, making installation straightforward and versatile across various bike setups.
- Sleek black finish and lightweight construction (302g) combine style and durability, making it an ideal choice for aggressive trail riders and serious cyclists seeking high-performance components.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 12"L x 8"W x 2"H |
| Manufacturer | SRAM |
| UPC | 757183591480 710845771835 784427964175 |
| Global Trade Identification Number | 00710845771835 |
| Item Package Dimensions L x W x H | 6.81 x 6.46 x 3.27 inches |
| Package Weight | 0.41 Kilograms |
| Item Dimensions  LxWxH | 6.55 x 6.8 x 3.2 inches |
| Brand Name | SRAM |
| Warranty Description | Limited Warranty |
| Model Name | Am Rd Gx Type 2.1 10spd Long Cage Blk |
| Suggested Users | unisex |
| Number of Items | 1 |
| Part Number | 00.7518.080.000 |
| Model Year | 2015 |
| Style | Long |
| Included Components | Rear Deraille |
| Size | One Size |
| Sport Type | Cycling |

## Product Details

- **Brand:** SRAM
- **Color:** Black
- **Material:** Aluminum
- **Item Weight:** 157 Grams
- **Mounting Type:** Standard

## Images

![MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed - Image 1](https://m.media-amazon.com/images/I/617d3tl81RL.jpg)

## Available Options

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

## Questions & Answers

**Q: What size should I use for a 36 -11 casette?**
A: Forgive me, but you are asking the wrong question.The cage size is controlled by the maximum amount of slack chain created by the combination of chain rings AND cassette. This is called "Chain Wrap".To formula for chain wrap is (Big Chain Ring - Small Chain Ring) + (Big cassette Cog - Small Cassette Cog).  So if you are using a compact double chain ring (50-34) and a 11-36 cassette the numbers work out to (50 minus 34) + (36 minus 11) or 16 + 25 = 41.  This means that if you shift from a big-big combination to a small-small combination, your derailleur has to be able to handle 41 teeth of loose chain, which calls for a long cage.  On my bike a have a single 40 tooth chain ring and a 11-42 cassette so the chain wrap works out to (40 - 40) + (42 - 11) = 0 + 31 = 31.   So even though I have a huge cassette I only need a medium cage because I have no front derailleur to create more chain wrap.Hope that helps.

**Q: what is short, medium.long cage?**
A: It has to do with chain wrap capacity. Small=30t Chainwrap Capacity, Medium=35t, Long=47t. The wrap is just the difference between the number of chain ring teeth plus the difference between the cog teeth. For example a 53/39 with a 12-25 cassette requires 14 + 13 = 27 teeth of wrap capacity needed from the RD.

**Q: Will this work with Shimano Ultegra shifter**
A: No, actuation will only work with sram.... The good news is that it will work with both sram 10 speed road and Mtb... Unlike the newer 11 speeds witch are road or mtb specific.

**Q: Can this be used with a shimano  11/42 cassette ?**
A: I used it with a sunrace 11-42 cassette but I needed a longer b tension screw(which was not provided) so you will likely run into the same issue.

## Frequently Bought Together

- Sram MTB Gx Type 2.1 Long Cage Rear Derailleur - Black, 10-Speed
- SRAM GX Trigger Shifter 10-Speed Rear Black
- SRAM PC-1051 10 Speed Chain w/PowerLock 114 Links

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-31*