---
product_id: 14759352
title: "Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310"
brand: "shimano"
price: "¥9861"
currency: JPY
in_stock: true
category: "Shimano"
url: https://www.desertcart.jp/products/14759352-altus-mountain-bike-rear-derailleur-direct-mount-rdm310
store_origin: JP
region: Japan
---

# Durable black alloy steel build 43T chain wrap capacity 8-speed drivetrain compatibility Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310

**Brand:** shimano
**Price:** ¥9861
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into the future with Shimano Altus – where precision meets power!

## Quick Answers

- **What is this?** Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310 by shimano
- **How much does it cost?** ¥9861 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/14759352-altus-mountain-bike-rear-derailleur-direct-mount-rdm310)

## Best For

- shimano enthusiasts

## Why This Product

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

## Key Features

- • **Precision Shifting Mastery:** Experience smooth, reliable gear changes with Shimano's top-normal derailleur action.
- • **Direct Braze-On Mount Design:** Simplifies installation and enhances frame compatibility for a sleek setup.
- • **Robust 43T Chain Wrap Capacity:** Handle a wide range of gears effortlessly for versatile riding conditions.
- • **Optimized 8-Speed Compatibility:** Seamlessly integrates with Shimano/SRAM 8-speed drivetrains for peak performance.
- • **Lightweight Alloy Steel Construction:** At just 326g, enjoy durability without the bulk slowing you down.

## Overview

The SHIMANO Altus RDM310 is a high-performance rear derailleur designed for 7/8-speed mountain and city bikes. Featuring a durable alloy steel build, a 43-tooth chain wrap capacity, and compatibility with Shimano/SRAM 8-speed drivetrains, it delivers smooth, reliable shifting in a lightweight 326g package. Its direct braze-on mount ensures easy installation, making it a top choice for riders seeking dependable gear transitions and enhanced ride versatility.

## Description

Shimano RDM310DL Altus GS 7/8-speed Rear Der Black,Long Cage

## Features

- metal
- Imported
- Chain Wrap Capacity: 43teeth, Derailleur Action: Top-Normal (Traditional)
- Derailleur Color: black, Drivetrain Spacing: Shimano/SRAM 8, Largest Cog: 34teeth
- Shifter/Rear Derailleur : Shimano, Speeds: 8sp, Weight: 326g

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005CMUQU0 |
| Best Sellers Rank | #27,656 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Rear Bike Derailleurs |
| Brand | SHIMANO |
| Brand Name | SHIMANO |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 6,261 Reviews |
| Global Trade Identification Number | 00689228130920, 04524667130925 |
| Included Components | Bike Parts |
| Item Dimensions L x W x H | 8.86"L x 6.22"W x 4.06"H |
| Item Highlight | Altus RD-M310 Rear Derailleur - Long Cage, 7/8-Speed, Black |
| Item Type Name | Bicycle Parts |
| Item Weight | 0.35 kg |
| League | Shimano |
| League Name | Shimano |
| Manufacturer | Shimano |
| Manufacturer Part Number | RDM310DL |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | RDM310DL |
| Mount Type | Braze-On Mount |
| Mounting Type | Braze-On Mount |
| Number of Items | 1 |
| Number of Teeth | 43 |
| UPC | 713831856783 620307457880 689228130920 750076832677 787766457704 |
| Warranty Description | 2 Year Manufacturer |

## Product Details

- **Brand:** SHIMANO
- **Color:** Black
- **Item Weight:** 0.35 kg
- **League:** Shimano
- **Material:** Alloy Steel

## Images

![Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310 - Image 1](https://m.media-amazon.com/images/I/51sZq0ff2sL.jpg)

## Available Options

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

## Frequently Bought Together

- SHIMANO Altus Mountain Bike Rear Derailleur - Direct Mount - RDM310
- Shimano FD-M310 Aultus Front Derailleur (28.6-34.9-mm 3x7/8 Speed Low-Clamp)
- A AKRAF Bike Link Plier + Chain Breaker Splitter Tool + Chain Checker + 3 Pairs Bicycle Missing Links, Bike Link Opener Closer Plier Chain Cutter Connector Wear Indicator Tool

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**Shop now:** [https://www.desertcart.jp/products/14759352-altus-mountain-bike-rear-derailleur-direct-mount-rdm310](https://www.desertcart.jp/products/14759352-altus-mountain-bike-rear-derailleur-direct-mount-rdm310)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-01*