---
product_id: 56780164
title: "58204 Heavy ShockProof Gear Oil - 1 Quart"
brand: "red line"
price: "$95.43"
currency: USD
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.us/products/56780164-58204-heavy-shockproof-gear-oil-1-quart
store_origin: US
region: United States of America
---

# Extended drain intervals Polyol ester synthetic base API GL-5 exceedance 58204 Heavy ShockProof Gear Oil - 1 Quart

**Brand:** red line
**Price:** $95.43
**Availability:** ✅ In Stock

## Summary

> ⚡ Shift into the future with Red Line’s shockproof power!

## Quick Answers

- **What is this?** 58204 Heavy ShockProof Gear Oil - 1 Quart by red line
- **How much does it cost?** $95.43 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/56780164-58204-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

- • **Longer Service, Less Downtime:** Extended drain intervals mean fewer oil changes and more time on the road or track.
- • **Trusted by Champions Worldwide:** Preferred choice for high-performance racing and specialty applications, from NHRA to dirt late models.
- • **Race-Proven Extreme Lubrication:** Fully synthetic polyol ester base ensures unmatched gear protection under the harshest conditions.
- • **Maximize Differential Efficiency:** Engineered to reduce wear and improve mileage, keeping your drivetrain performing at peak levels.
- • **Uncompromising Quality Since 1979:** Red Line’s legacy guarantees superior protection and reliability for your vehicle’s toughest demands.

## Overview

Red Line 58204 Heavy ShockProof Gear Oil is a fully synthetic, polyol ester-based lubricant designed to exceed API GL-5 standards. It delivers superior protection and efficiency for high-performance and heavy-duty differentials, extending drain intervals and reducing wear. Trusted globally in racing and specialty vehicles, it ensures smooth, reliable gear shifts even under extreme conditions.

## Description

These products on exceptionally high order fulfillment rates, breadth of available products and these are also complete line of Heavy-Duty Shop Products that will bring you years of reliable performance.

Review: Eliminated all crunch’s/missed gear changes. - Used to have a crunch sometimes when changing into 3rd or 4th, since putting this stuff in my 850hp r33gtr I’ve not had one missed change even when hard launching at santapod raceway.
Review: Used all over the world where you need the best protection and maximum strength - No need to say anything about this. Used all over the world where you need the best protection and maximum strength, there is no better. I use it in BMW shaft drive final drives and boxer gearboxes. Ideal for use in BMW R1200GSA or GSs that travel heavy and run for long periods at high speed or in very hot climates.

## 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 | 52,046 in Automotive ( See Top 100 in Automotive ) 111 in Gear Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (947) |
| Date First Available | 28 Jun. 2012 |
| Exterior | Painted |
| Item Weight | 771 g |
| Item model number | 58204 |
| Manufacturer | Red Line |
| Manufacturer part number | 57-6525 |
| OEM Part Number | 58204 |
| Product Dimensions | 22.86 x 9.88 x 9.83 cm; 771.11 g |
| Viscosity | Viskositätsindex (VI) |

## Product Details

- **Brand:** Red Line
- **Item weight:** 771 g
- **Liquid volume:** 32 Fluid Ounces
- **Material:** gear oil
- **Package information:** Bottle

## Images

![58204 Heavy ShockProof Gear Oil - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71GC5ofv8fL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this gl5 rated? Was thinking of it going in my 1150gs adv but i cant seem to find its rating**
A: Yes, Red Line Heavy Shockproof exceeds the API GL-5 specifications

**Q: Is this safe with yellow metals**
A: Hi, 
Yes, its fine to be used, what application are you using this for? I would suggest contacting us directly for more advice on this
Opie Oils

**Q: Is this suitable for a quaife plate type lsd it is for a triumph tr4 doing sprints and hillclimbs**
A: I use it in a 1958 Harley gearbox. I know others who use it in Harley boxes up through the 60's, 70's and 80's. I don't know about Triumphs, sorry. The pink colour makes tracing leaks easier, unless you use pink engine oil.

**Q: Hi has anybody used this oil in a 6 speed harley-davidson gearbox**
A: Hi, yes, popular for those, Red Line also sell this as V-Twin Transmission oil, in a different bottle.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Eliminated all crunch’s/missed gear changes.
*by J***E on 13 May 2025*

Used to have a crunch sometimes when changing into 3rd or 4th, since putting this stuff in my 850hp r33gtr I’ve not had one missed change even when hard launching at santapod raceway.

### ⭐⭐⭐⭐⭐ Used all over the world where you need the best protection and maximum strength
*by S***Y on 7 September 2017*

No need to say anything about this. Used all over the world where you need the best protection and maximum strength, there is no better. I use it in BMW shaft drive final drives and boxer gearboxes. Ideal for use in BMW R1200GSA or GSs that travel heavy and run for long periods at high speed or in very hot climates.

### ⭐⭐⭐⭐⭐ Wicked Stuff!
*by F***E on 30 April 2017*

This is gearbox magic. I race my Honda DC2 way too regularly :) and far too aggressively if I'm honest. It used to have a 3rd gear synchro crunch and after doing a fluid change and adding this magic stuff it's totally cured it (18 months in) still no crunch. The box and gear changes are brilliant

## 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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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-23*