---
product_id: 485339255
title: "SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System"
brand: "shimano"
price: "$83.77"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/485339255-shimano-rt-em300-disc-rotor-180mm-center-lock-mounting-system
store_origin: EC
region: Ecuador
---

# Center Lock system 1.76 oz lightweight 180mm precision SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System

**Brand:** shimano
**Price:** $83.77
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate Your Ride with Effortless Braking Power!

## Quick Answers

- **What is this?** SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System by shimano
- **How much does it cost?** $83.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/485339255-shimano-rt-em300-disc-rotor-180mm-center-lock-mounting-system)

## 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

- • **Lightweight Design:** Weighing in at just 1.76 ounces, this rotor won't weigh you down during your rides.
- • **Durable Construction:** Built to withstand the rigors of mountain biking while maintaining peak performance.
- • **Precision Engineering:** Crafted with a 180mm diameter for optimal braking performance on any terrain.
- • **Effortless Installation:** Experience the convenience of Shimano's CENTER LOCK mounting system for quick rotor swaps.
- • **Versatile Compatibility:** Designed to fit seamlessly with Shimano's range of disc brakes, ensuring a perfect match.

## Overview

The SHIMANORT-EM300 Disc Rotor features a 180mm Center Lock mounting system, designed for quick installation and removal. Weighing only 1.76 ounces, it combines lightweight performance with durability, making it an essential upgrade for any serious cyclist.

## Description

SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System

## Features

- With Lock Ring (Internal and External serration)
- Shimano's CENTER LOCK mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Shimano |
| Brand | SHIMANO |
| Item Weight | 1.76 ounces |
| Product Dimensions | 9.25 x 8 x 1.25 inches |
| Manufacturer Part Number | ERTEM300M |

## Product Details

- **Brand:** SHIMANO
- **Vehicle Service Type:** Cars
- **Manufacturer:** Shimano
- **UPC:** 192790443157

## Images

![SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System - Image 1](https://m.media-amazon.com/images/I/61BCZR18pAL.jpg)

## Frequently Bought Together

- SHIMANO RT-EM300 Disc Rotor 180mm Center Lock Mounting System
- PEATOVIE 16-Notch Bottom Bracket Tool Compatible with Chris King, Campagnolo, Shimano, SRAM, etc.-Blue(Bottom Bracket for BBT-69.2)
- Shimano Brake Disc 160 mm Centre Lock RT10 Solo Resin Bicycle, Silver

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**Shop now:** [https://www.desertcart.ec/products/485339255-shimano-rt-em300-disc-rotor-180mm-center-lock-mounting-system](https://www.desertcart.ec/products/485339255-shimano-rt-em300-disc-rotor-180mm-center-lock-mounting-system)

---

*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-26*