---
product_id: 5797128
title: "Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart"
brand: "red line"
price: "€ 71.71"
currency: EUR
in_stock: true
category: "Red Line"
url: https://www.desertcart.sk/products/5797128-red-line-58204-heavy-shockproof-gear-oil-1-quart
store_origin: SK
region: Slovakia
---

# Trusted in top racing diff setups Exceeds API GL-5 specs Polyol ester synthetic base Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart

**Brand:** red line
**Price:** € 71.71
**Availability:** ✅ In Stock

## Summary

> ⚡ Dominate the track with shockproof synthetic precision!

## Quick Answers

- **What is this?** Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart by red line
- **How much does it cost?** € 71.71 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/5797128-red-line-58204-heavy-shockproof-gear-oil-1-quart)

## Best For

- red line enthusiasts

## Why This Product

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

## Key Features

- • **Iconic Brand Legacy:** Red Line’s 40+ years of uncompromising performance makes this the go-to gear oil for professionals and enthusiasts alike.
- • **Shockproof Durability:** Specifically formulated for high-impact racing differentials like Sprint, Midget, and NHRA Top Fuel rear ends.
- • **Elite API GL-5 Protection:** Surpasses API GL-5 specs to ensure your drivetrain performs flawlessly under heavy loads.
- • **Race-Proven Synthetic Power:** Engineered from advanced polyol ester base stocks for unmatched lubrication under extreme conditions.
- • **Maximized Differential Efficiency:** Boosts mileage and extends drain intervals by reducing wear and friction beyond industry standards.

## Overview

Red Line 58204 Heavy Shockproof Gear Oil is a fully synthetic, polyol ester-based lubricant designed for extreme racing and high-load differential applications. It exceeds API GL-5 specifications, offering superior protection, improved efficiency, and longer drain intervals. Trusted by professional racers since 1979, this 1-quart bottle delivers shockproof durability for top-tier performance differentials.

## Description

Buy Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart: Engine & Oil - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- FULLY-SYNTHETIC FORMULAS - created from polyol ester base stocks, offer excellent lubrication under extreme conditions
- ENGINEERED TO PROVIDE - the highest degree of protection and improvement of differential efficiency for better mileage, longer drain intervals, and less wear, exceed API GL-5 specifications
- NOT RECOMMENDED - for most synchro applications due to the product's extreme slipperiness
- POPULAR GEAR OIL FOR - Many performance racing applications like Sprint, Midget, Dirt Late Model and Quick Change Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear ends, most popular ShockProof product, many racing and specialty applications
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CPI5XW |
| Best Sellers Rank | #19,597 in Automotive ( See Top 100 in Automotive ) #39 in Engine & Oil Fluid Additives |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,010) |
| Global Trade Identification Number | 00083522582049 |
| Included Components | Red Line 58204 Heavy ShockProof Gear Oil - 1 Quart Bottle |
| Item Form | Oil |
| Item Type Name | Engine & Oil |
| Item Weight | 1.7 pounds |
| Liquid Volume | 32 fluid ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | 58204 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Interchange Info | 58204 |
| Part Number | 57-6525 |
| Recommended Uses For Product | Gear Oil |
| Specific Uses For Product | Racing transmissions and transaxles, high load conditions, high-performance differentials |
| UPC | 083522582049 083522582094 |
| Unit Count | 32 Fluid Ounces |
| Warranty Description | Limited Manufacturer |

## Product Details

- **Brand:** Red Line
- **Item Weight:** 1.7 pounds
- **Liquid Volume:** 32 fluid ounces
- **Material:** Synthetic
- **Package Information:** Bottle

## Images

![Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71GC5ofv8fL.jpg)
![Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart - Image 2](https://m.media-amazon.com/images/I/81riZEsBuZL.jpg)
![Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart - Image 3](https://m.media-amazon.com/images/I/81stu27RB+L.jpg)
![Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart - Image 4](https://m.media-amazon.com/images/I/81owXIUH2ML.jpg)
![Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart - Image 5](https://m.media-amazon.com/images/I/815nUM9tWEL.jpg)

## Available Options

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

## Questions & Answers

**Q: What viscosity is this particular oil?**
A: Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90For heavily-loaded racing differentials and transmissions, problem gearboxesMany performance racing applications like Sprint/Midget/Dirt Late Model Differentials, Detroit Lockers and spools, NHRA Top Fuel and Funny Car rear endsNot recommended for most synchro applications due to the product's extreme slipperiness

**Q: What is the viscosity of this? Need a specific number.**
A: Film thickness greater than an SAE 75W250, yet low fluid friction like 75W90. This is from the manufacturer's site.

**Q: Canged primary chain OIL of my 2002 RoadKing ScreamingEagle I made a MISTAKE! Added REDLINTransFluidw/Shockproof. IS It COMPATABLE**
A: I would think not.  As the primary runs a 20w 50 and the red line is something like 75 90 it's going to a lot thicker.  I would call a local Indy not HD and ask them for sure.

**Q: Is this GL5?**
A: It exceeds API GL-5 specifications.

## Frequently Bought Together

- Red Line 58204 Heavy Shockproof Gear Oil - 1 Quart
- Red Line 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B

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**Shop now:** [https://www.desertcart.sk/products/5797128-red-line-58204-heavy-shockproof-gear-oil-1-quart](https://www.desertcart.sk/products/5797128-red-line-58204-heavy-shockproof-gear-oil-1-quart)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-15*