---
product_id: 81370950
title: "12X18X4 mm Ball Bearing with Rubber Seals, 10-Pack - Replaces Traxxas 5120#99MR6701-2RS-X10"
brand: "boca bearing"
price: "$70.41"
currency: USD
in_stock: true
reviews_count: 1
url: https://www.desertcart.us/products/81370950-12x18x4-mm-ball-bearing-with-rubber-seals-10-pack-replaces
store_origin: US
region: United States of America
---

# Chrome steel construction 12x18x4 mm precision sizing Durable rubber seals 12X18X4 mm Ball Bearing with Rubber Seals, 10-Pack - Replaces Traxxas 5120#99MR6701-2RS-X10

**Brand:** boca bearing
**Price:** $70.41
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your RC game with precision and durability!

## Quick Answers

- **What is this?** 12X18X4 mm Ball Bearing with Rubber Seals, 10-Pack - Replaces Traxxas 5120#99MR6701-2RS-X10 by boca bearing
- **How much does it cost?** $70.41 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/81370950-12x18x4-mm-ball-bearing-with-rubber-seals-10-pack-replaces)

## Best For

- boca bearing enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Chrome steel races and balls ensure long-lasting performance
- • **Ready to Roll:** Pre-greased for smooth operation after a quick break-in
- • **Value Pack Advantage:** 10-pack bundle for multiple replacements or upgrades
- • **Sealed for Protection:** Heavy-duty rubber seals keep dirt and debris out
- • **Precision Fit for Traxxas:** Exact 12x18x4 mm sizing replaces TRA5120 seamlessly

## Overview

This 10-pack of 12x18x4 mm ball bearings with rubber seals is a direct replacement for Traxxas Part TRA5120, crafted from durable chrome steel and pre-greased for optimal performance. Designed for RC cars and trucks, these bearings offer reliable protection against dirt and wear, ensuring smooth, long-lasting operation.

## Description

Replacement bearing for Traxxas Part TRA5120, RC Car & Truck Econo bearing 10 packs are the most affordable way to replace stock bearings with high quality standard bearings. Boca's Econo RC Bearings have long been the industry standard for backyard bashers the world over. These bearings have chrome steel races, balls, retainers and heavy duty rubber seals. All Econo bearings are packed in grease and will require a short break in period to loosen up. Each kit contains 10 bearings (12x18x4mm)

## Features

- Replaces Traxxas Part TRA5120
- Replaces Traxxas Part TRA5120
- Inside Diameter: 12mm - Outside Diameter: 18mm - Width: 4mm
- Bearing Material: Chrome Steel, Ball Material: Chrome Steel, ABEC#1/ISOP0
- RC Car & Truck Bearings - 10 Pack

## Product Details

- **Brand:** BOCA BEARING
- **Material:** Rubber
- **Bearing Number:** 5120
- **Bearing Type:** Ball Bearing
- **Compatible Lubricant:** Grease

## Images

![12X18X4 mm Ball Bearing with Rubber Seals, 10-Pack - Replaces Traxxas 5120#99MR6701-2RS-X10 - Image 1](https://m.media-amazon.com/images/I/71g9P3d+rAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Five Stars
  

*by J***C on Reviewed in the United States on August 25, 2015*

Much better (and cheaper) than the Traxxas parts. Fits perfectly.

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**Shop now:** [https://www.desertcart.us/products/81370950-12x18x4-mm-ball-bearing-with-rubber-seals-10-pack-replaces](https://www.desertcart.us/products/81370950-12x18x4-mm-ball-bearing-with-rubber-seals-10-pack-replaces)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-04*