---
product_id: 283640348
title: "GB420MXZ-100 (420 Series) Gold 100 Link Heavy Duty MX/SX Racing Non O-Ring Chain with Connecting Link"
brand: "rk racing chain"
price: "€ 79.15"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/283640348-gb420mxz-100-420-series-gold-100-link-heavy-duty-mx
store_origin: SK
region: Slovakia
---

# RK's exclusive HIT heat treatment Ultra-light 1.76 lbs per 100 links 5000 ft-lb tensile strength GB420MXZ-100 (420 Series) Gold 100 Link Heavy Duty MX/SX Racing Non O-Ring Chain with Connecting Link

**Brand:** rk racing chain
**Price:** € 79.15
**Availability:** ✅ In Stock

## Summary

> 🏁 Dominate the track with the gold standard in MX chains!

## Quick Answers

- **What is this?** GB420MXZ-100 (420 Series) Gold 100 Link Heavy Duty MX/SX Racing Non O-Ring Chain with Connecting Link by rk racing chain
- **How much does it cost?** € 79.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/283640348-gb420mxz-100-420-series-gold-100-link-heavy-duty-mx)

## Best For

- rk racing chain enthusiasts

## Why This Product

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

## Key Features

- • **Optimized for MX/SX:** Designed specifically for 50cc to 125cc open class motocross, balancing power and agility flawlessly.
- • **Race-Ready Strength:** Engineered with chrome-moly steel and oversized alloy pins for unmatched durability under extreme stress.
- • **Seamless Smoothness:** Seamless rollers and bushings reduce friction for a smoother ride and enhanced throttle response.
- • **Precision Heat Treatment:** Exclusive HIT process ensures superior wear resistance and longevity, keeping you ahead on every track.
- • **Featherweight Performance:** At just 1.76 pounds per 100 links, this chain delivers elite strength without the bulk—perfect for pro-level racing.

## Overview

The RK Racing Chain GB420MXZ-100 is a premium, non O-ring motocross chain crafted from chrome-moly steel with oversized alloy pins and seamless rollers. Heat-treated with RK’s exclusive HIT process, it boasts a maximum tensile strength of 5000 foot-pounds while weighing only 1.76 pounds per 100 links. Engineered for professional 50cc to 125cc MX/SX racing, it offers unmatched durability, lightweight performance, and superior wear resistance.

## Description

GB420MXZ chains are made for the serious motocross racer looking for the lightest, strongest non O-ring chain. GB420MXZ chains feature chrome-moly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength. All components are heat-treated using RK's exclusive HIT (Heat Induction Transfer) process. GB420MXZ racing chains are the strongest in their class giving you the best value-performance rating of any MX racing chain in the world today. With a maximum tensile strength rated at 5000 foot pounds and weighing in at only 1.76 pounds, the GB420MXZ is ideal for professional level 50cc to 125cc open class racing. Pin length in mm: 15.7mm. Maximum wear life index: 300. Maximum tensile in pounds/feet: 5000 pounds/feet. Master link type: clip. Weight in pounds per 100 links: 1.76 pounds. Maximum cc: 150cc street/125cc off-road. 24.0 links per foot. 12.7mm pin to pin center. 000 miles of street riding or one year of off-road use..

## Features

- GB420MXZ chains are made for the serious motocross racer looking for the lightest, strongest non O-ring chain
- GB420MXZ chains feature chrome-moly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength
- All components are heat-treated using RK's exclusive HIT (Heat Induction Transfer) process
- GB420MXZ racing chains are the strongest in their class giving you the best value-performance rating of any MX racing chain in the world today
- With a maximum tensile strength rated at 5000 foot pounds and weighing in at only 1.76 pounds, the GB420MXZ is ideal for professional level 50cc to 125cc open class racing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RK Racing Chain |
| Brand | RK Racing Chain |
| Model | GB420MXZ-100 |
| Product Dimensions | 21.08 x 8.89 x 2.03 cm; 821 g |
| Item model number | GB420MXZ-100 |
| Manufacturer Part Number | GB420MXZ-100 |
| Item Weight | 821 g |

## Product Details

- **Load capacity:** 22241.36 N
- **Brand:** RK Racing Chain
- **Material:** Metal
- **Recommended uses for product:** motocross and supercross racing
- **Specification met:** ANSI B29.1

## Images

![GB420MXZ-100 (420 Series) Gold 100 Link Heavy Duty MX/SX Racing Non O-Ring Chain with Connecting Link - Image 1](https://m.media-amazon.com/images/I/61ix4ac5POL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.sk/products/283640348-gb420mxz-100-420-series-gold-100-link-heavy-duty-mx](https://www.desertcart.sk/products/283640348-gb420mxz-100-420-series-gold-100-link-heavy-duty-mx)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-24*