---
product_id: 402292461
title: "USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5\" Differential with HD Positraction/Locker"
brand: "usa standard gear"
price: "¥94760"
currency: JPY
in_stock: true
reviews_count: 5
category: "Usa Standard Gear"
url: https://www.desertcart.jp/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit
store_origin: JP
region: Japan
---

# HD Positraction/Locker ready Complete master overhaul kit 1 Year warranty backed USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker

**Brand:** usa standard gear
**Price:** ¥94760
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your GM 8.5" differential like a pro—master the road with confidence!

## Quick Answers

- **What is this?** USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker by usa standard gear
- **How much does it cost?** ¥94760 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/402292461-usa-standard-gear-zk-gm8-5-hd-master-overhaul-kit)

## Best For

- usa standard gear enthusiasts

## Why This Product

- Trusted usa standard gear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Koyo Bearings:** Premium ball bearings engineered for durability and smooth performance under heavy loads.
- • **Trusted by Professionals:** 4.2-star rating from 171 reviews proves this kit delivers consistent, high-quality results.
- • **ISO 9001 Certified Quality:** Manufactured to rigorous international standards ensuring reliability and peace of mind.
- • **All-in-One Installation Kit:** Everything you need to overhaul your GM 8.5" differential in one convenient package—no extra trips or guesswork.
- • **Heavy-Duty Positraction Compatibility:** Optimized for Yukon Dura-grip and Eaton Posi units to maximize traction and control.

## Overview

The USA Standard Gear ZK GM8.5-HD Master Overhaul Kit is a comprehensive, ISO 9001 certified solution designed for GM 8.5" differentials. Featuring high-quality Koyo ball bearings, alloy steel and bronze components, and compatibility with heavy-duty posi/locker units, this kit ensures a reliable, professional-grade rebuild backed by a 1-year warranty and trusted by hundreds of users.

## Description

USA Standard Master Overhaul kits let you finish your install with confidence.

Review: Yukon HD bearing master kit - Super fast shipping A++++
Review: USA Standard Gear set - Not YUKON - But still good! - Got this for excellent sale price and then when box came said USA Standard Gear and not Yukon, I then called Yukon and where customer support informed me the item is incorrectly listed as a Yukon set in error. desertcart again is listing incorrectly, but the set is still similar to Yukon with the only differences between sets is Yukon has extra crush sleeve x2, and Timkon bearings, where the USA Gear set has Koyo bearings. That in a nutshell is this kit which is still excellent and made for Yukon Dura-grip carriers or Eaton Posi units, (per Yukon customer service), but always verify your aftermarket carrier before hand will accept these bearings or things will not fit correctly.

## Features

- 1 Year Warranty
- Uses High Quality Koyo Bearings and Races
- Complete Installation Kit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GWLLOHO |
| Bearing Type | Ball Bearing |
| Brand | USA Standard Gear |
| Brand Name | USA Standard Gear |
| Compatible Lubricant | Grease |
| Customer Reviews | 4.2 out of 5 stars 171 Reviews |
| Global Trade Identification Number | 00883584370574 |
| Included Components | ZKGM8.5-HD Master Overhaul Kit for GM 8.5" Differential |
| Item Dimensions | 30.5 x 30.5 x 7.6 Centimeters |
| Item Type Name | ZKGM8.5-HD Master Overhaul Kit for GM 8.5" Differential |
| Item Weight | 2.68 kg |
| Item dimensions L x W x H | 30.5 x 30.5 x 7.6 Centimeters |
| Manufacturer | USA Standard Gear |
| Material | Alloy Steel , Bronze |
| Material Type | Alloy Steel, Bronze |
| Model Number | ZK GM8.5-HD |
| Number of Items | 1 |
| Number of Packs | 1 |
| Outside Diameter | 21.5 Centimetres |
| Part Number | ZK GM8.5-HD |
| Specification Met | ISO 9001 |
| UPC | 883584370574 |
| Unit Count | 1 Count |

## Product Details

- **Bearing Type:** Ball Bearing
- **Brand:** USA Standard Gear
- **Compatible Lubricant:** Gear Oil, Grease
- **Item Weight:** 5.9 pounds
- **Item dimensions L x W x H:** 12 x 12 x 3 inches

## Images

![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 1](https://m.media-amazon.com/images/I/71KRsnx5rjL.jpg)
![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 2](https://m.media-amazon.com/images/I/81DWSSdB9rL.jpg)
![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 3](https://m.media-amazon.com/images/I/81WG88Kxl0L.jpg)
![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 4](https://m.media-amazon.com/images/I/81jsFZ4Sj4L.jpg)
![USA Standard Gear (ZK GM8.5-HD) Master Overhaul Kit for GM 8.5" Differential with HD Positraction/Locker - Image 5](https://m.media-amazon.com/images/I/61ps-F9Y+JL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Yukon HD bearing master kit
*by L***C on 15 September 2020*

Super fast shipping A++++

### ⭐⭐⭐⭐⭐ USA Standard Gear set - Not YUKON - But still good!
*by '***N on 13 June 2019*

Got this for excellent sale price and then when box came said USA Standard Gear and not Yukon, I then called Yukon and where customer support informed me the item is incorrectly listed as a Yukon set in error. Amazon again is listing incorrectly, but the set is still similar to Yukon with the only differences between sets is Yukon has extra crush sleeve x2, and Timkon bearings, where the USA Gear set has Koyo bearings. That in a nutshell is this kit which is still excellent and made for Yukon Dura-grip carriers or Eaton Posi units, (per Yukon customer service), but always verify your aftermarket carrier before hand will accept these bearings or things will not fit correctly.

### ⭐⭐⭐⭐⭐ Happy
*by K***R on 4 December 2019*

Good for price

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-13*