---
product_id: 20830785
title: "Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5\"/8.6\" GM Axle, YDGGM8.5-3-30-1"
brand: "yukon gear & axle"
price: "₨19605"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/20830785-dura-grip-limited-slip-differential-positraction-30-spline-2-73
store_origin: SC
region: Seychelles
---

# Fully rebuildable clutch-style posi Fits GM 8.5"/8.6" 30 spline axles Forged 4320 steel internals Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5"/8.6" GM Axle, YDGGM8.5-3-30-1

**Brand:** yukon gear & axle
**Price:** ₨19605
**Availability:** ✅ In Stock

## Summary

> 🚀 Grip the road like a pro with Yukon’s Dura Grip Positraction!

## Quick Answers

- **What is this?** Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5"/8.6" GM Axle, YDGGM8.5-3-30-1 by yukon gear & axle
- **How much does it cost?** ₨19605 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/20830785-dura-grip-limited-slip-differential-positraction-30-spline-2-73)

## Best For

- yukon gear & axle enthusiasts

## Why This Product

- Trusted yukon gear & axle brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Made in the USA:** Proudly assembled domestically, guaranteeing quality craftsmanship and performance.
- • **Rebuildable for Life:** Fully serviceable internals let you maintain peak performance and extend your investment.
- • **Unmatched Durability:** Built with premium forged 4320 steel for long-lasting strength and reliability.
- • **Seamless Compatibility:** Perfectly engineered for GM 8.5" and 8.6" axles with 30 spline, supporting gear ratios 2.73 and up.
- • **Precision Traction Control:** 4-spring clutch-style limited slip design ensures aggressive grip without sacrificing smoothness.

## Overview

The Yukon Gear & Axle Dura Grip Limited Slip Differential is a robust, clutch-style posi designed for GM 8.5" and 8.6" 30 spline axles. Featuring forged 4320 steel internals and a 4-spring clutch system, it delivers aggressive traction and smooth handling for both on- and off-road driving. Fully rebuildable and assembled in the USA, it supports gear ratios from 2.73 and up, making it a reliable upgrade for a wide range of GM vehicles.

## Description

Yukon Gear & Axle Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5"/8.6" GM Axle, YDGGM8.5-3-30-1

## Features

- Forged 4320 Steel Internals
- Fully Rebuildable; 4-spring, clutch style positraction
- Clutch Style Positraction
- Assembled in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Yukon Gear & Axle |
| Model | DuraGrip Limited Slip Differential Positraction GM 8.5" w/30 Spline |
| Item Weight | 22.3 pounds |
| Item model number | YDGGM8.5-3-30-1 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | YDGGM8.5-3-30-1 |
| OEM Part Number | YDGGM9.5331 |
| Special Features | DIFFERENTIAL OIL: Use non-synthetic GL-5 gear oil and Yukon LSD (Limited Slip Differential) additive (ASIN B00J0G09JW, model OILADD) are recommended for durable performance and smooth operation. Synthetic oil is not recommended and can result in aggressive or noisy operation. This unit requires the use of carrier bearing & race part numbers LM102949 & LM102911 for the 8.5 in. housing (2.891 in. Race OD) or LM603049 & LM603012 for the GM 8.600 in. housing (3.062 in. Race OD)., The GM 8.5" & 8.6" came in the following vehicles | GTO '70-'74 | Hummer H3 '06-'10 | Impala '71-'85 '94-'96 | Isuzu Ascender '03-'08 | Malibu '73-'83 | Nova '70-'79 | Oldsmobile Cutlass '70-'77 '85-'87 | Omega '73-'79Pontiac Bonneville '70-'86 | Rainier '04-'07 | Regal '73-'87 | Replacement Part Number: '559-010 | Riviera '75-'78 | S-10 Blazer '94 | S-10 Pickup '99-'04 | Saab 9-7X '05-'09 | Savana '96-'13 | Sierra 1500 '99-'17 | Sierra 2500 '11-'13 | Sierra 3500 '11-'13 | Silverado 1500 '99-'17, The GM 8.5" and 8.6" came in the following vehicles | Bel Air '70-'75 | Blazer '77-'94 | Buick Apollo '73-'75 | Cadillac Escalade '99-'00 '02-'13 | Camaro '70-'81 | Canyon '04-'12 | Caprice '70-'96 | Catalina '70-'81 | Chevelle '73 | Chevy Avalanche '02-'06 '09-'13 | Chevy Monte Carlo '73-'78 | CK Pickup '77-'86 '88-'00 | Colorado '04-'13 | El Camino '71-'76 | Electra '71-'89 | Envoy '02-'09 | Express '96-'14 | Firebird '70-'81 | GMC CK Pickup '77-'86 '88-'00 | Grand Prix '71-'87, The GM 8.5" and 8.6" came in the following vehicles | G-Series '75-'95 | G-Series '78-'95 | Skylark '70-'72 '75-'79 | Sonoma '94-'04 | SSR '03-'06 | Suburban '77-'86 '92-'99 | Suburban '77-'99 | Tahoe '95-'17 | Trailblazer '02-'09 | Typhoon '92-'93 | Ventura '76-'77 | Yukon '00-'13 | Yukon Denali '01-'13, The Yukon DuraGrip Positraction (also known as a "posi") is a Limited slip differential (LSD), is a traction device that splits torque to both axles, enabling continuous traction around corners as well as a strait line. This Posi fits a GM 10 Bolt 8.5" & 8.6" Inches with 30 Spline Axles. Aftermarket Carrier Style: Clutch-type. Fits 2.73 Gear Ratio & Up. |

## Product Details

- **Brand:** Yukon Gear & Axle
- **Material:** Alloy Steel
- **Color:** Silver
- **UPC:** 883584260165
- **Global Trade Identification Number:** 00883584260165

## Images

![Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5"/8.6" GM Axle, YDGGM8.5-3-30-1 - Image 1](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)

## Available Options

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

## Questions & Answers

**Q: Will this fit a 86 Chevy C10 with the 8.5 10 bolt rear?**
A: no you will need 30 spline axles those trucks used 28 spline axles

**Q: This fit a 94 chevy 1500?**
A: Yes, this unit will work GREAT in a 1994 Chevy 1500.

Let me know if you have any other questions.

Thanks,
BRYDON
641-751-8060
staticz2229@gmail.com

**Q: Is this a drop in replacement?**
A: Almost a  drop in unit, you will have to move your ring gear from your  original  unit..and  press on new  bearings...

**Q: Will this fit a 1973 Pontiac Firebird?**
A: First answer is not correct. This is NOT for a 9.5” 14 bolt. The description states it is for a 10 bolt 8.5” or 8.6” with 30 spline axle shafts

## Frequently Bought Together

- Yukon Gear & Axle Dura Grip Limited Slip Differential Positraction, 30 Spline, 2.73-Up, Compatible with 8.5"/8.6" GM Axle, YDGGM8.5-3-30-1
- Friction Modifier Positraction Additive for Limited Slip Differentials
- Yukon Gear & Axle (CK GM8.6) Carrier Installation Kit for GM 8.6 Differential

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**Shop now:** [https://www.desertcart.sc/products/20830785-dura-grip-limited-slip-differential-positraction-30-spline-2-73](https://www.desertcart.sc/products/20830785-dura-grip-limited-slip-differential-positraction-30-spline-2-73)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-24*