---
product_id: 381623529
title: "USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008"
brand: "usa standard gear"
price: "¥339518"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/381623529-usa-standard-gear-re-gear-and-installation-kit-4-88
store_origin: JP
region: Japan
---

# Rigorous quality testing beyond OEM 4.88 gear ratio for max torque Complete front & rear overhaul kit USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008

**Brand:** usa standard gear
**Price:** ¥339518
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your Jeep’s powertrain — conquer trails with confidence!

## Quick Answers

- **What is this?** USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008 by usa standard gear
- **How much does it cost?** ¥339518 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/381623529-usa-standard-gear-re-gear-and-installation-kit-4-88)

## 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

- • **Beyond OEM Durability:** Subjected to rigorous in-house testing ensuring unmatched reliability for daily drives and off-road adventures.
- • **Optimized 4.88 Gear Ratio:** Unlock superior torque and crawling ability tailored for Jeep TJ Dana 30/44 axles.
- • **Trusted DIY-Friendly Brand:** USA Standard Gear delivers OE-quality parts at affordable prices, perfect for professional installers and enthusiasts alike.
- • **All-in-One Overhaul Solution:** Save time & money with a full front and rear ring & pinion set plus master overhaul kit in one package.
- • **Precision Fitment Guaranteed:** Specifically engineered for TJ vehicles with Dana Spicer 30 front and Dana Spicer 44 rear axles for seamless installation.

## Overview

The USA Standard Gear Re-Gear & Installation Kit (4.88 ratio) is a comprehensive overhaul package designed specifically for Jeep TJ Dana Spicer 30 front and Dana Spicer 44 rear axles. It includes front and rear ring & pinion sets plus a master overhaul kit, rigorously tested beyond OEM standards to ensure durability and precision fitment. Ideal for off-road enthusiasts and DIY installers seeking reliable, torque-optimized performance upgrades.

## Description

USA Standard Gear offers convenient solutions for re-gearing four-wheel drive vehicles through their Re-gear & Installation Kits. These kits simplify the process by bundling front and rear ring and pinion sets with comprehensive master overhaul kits, streamlining the differential overhaul. This approach saves both time and money, ensuring that you obtain the precise components required for your specific installation. An array of OEM and aftermarket ratios are available in USA Standard Gear's ring and pinion sets, making them well-equipped to handle the demands of daily commuting, trail driving, and spirited journeys. These sets are meticulously subjected to rigorous in-house quality testing and inspections, surpassing OEM specifications. This comprehensive assessment covers dimensional, material, and fitment criteria, guaranteeing the components' durability in various driving scenarios. USA Standard Gear's reputation as a trusted brand stems from our commitment to offering top-notch OE replacement parts at affordable rates. Designed for a wide range of users, including general installers and DIY enthusiasts, their products guarantee reliability and the assurance that your vehicle will remain in optimal condition for the long haul.

## Features

- COMPLETE KIT: Provides all of the necessary parts for a differential overhaul in one simple part number - Includes front and rear ring & pinion sets and master overhaul kit - save time and money, and get the exact parts you need for your specific installation.
- FITMENT: Specifically designed to fit TJ vehicles with Dana Spicer 30 front and Dana Spicer 44 rear axles
- GEAR RATIO: Kit fits 4.88 gear ratio, offering improved torque and power delivery - this ratio is well-suited for off-road adventures, providing excellent crawling ability and enhanced performance on challenging terrains.
- RIGOROUSLY TESTED: USA Standard Gear employs rigorous in-house quality testing and inspections, that go beyond OEM specifications, to ensure dimensional, material, and fitment testing is passed, ensuring the gears are ready to withstand the rigors of everyday commuting, trail running, and all types of spirited driving.
- TRUSTED BRAND: USA Standard Gear sets the benchmark for quality OE replacement parts at affordable prices. Designed for the general installer and do-it-yourself customer, USA Standard Gear products provide unmatched reliability and the assurance that your vehicle is repaired for the long haul.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | USA Standard Gear |
| Brand | USA Standard Gear |
| Model | Gear & Install Kit Packages |
| Product Dimensions | 50.8 x 40.64 x 30.48 cm; 6.8 kg |
| Item model number | ZGK008 |
| Exterior | Machined |
| Manufacturer Part Number | ZGK008 |
| Position | Front |
| Item Weight | 6.8 Kilograms |

## Product Details

- **Brand:** USA Standard Gear
- **Auto part position:** Front
- **Material:** Alloy Steel
- **Included components:** Gear & Install Kit Packages
- **Manufacturer:** USA Standard Gear

## Images

![USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008 - Image 1](https://m.media-amazon.com/images/I/71i340RLvSL.jpg)
![USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008 - Image 2](https://m.media-amazon.com/images/I/61+w-FRSGSL.jpg)
![USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008 - Image 3](https://m.media-amazon.com/images/I/61+w-FRSGSL.jpg)
![USA Standard Gear Re-Gear & Installation Kit, 4.88 Ratio, Compatible with Jeep TJ D30 fr and D44 rr, ZGK008 - Image 4](https://m.media-amazon.com/images/I/61+w-FRSGSL.jpg)

## Questions & Answers

**Q: Wondering how this wont fit my vehicle... it is a Tj unlimited with d30f and d44r.... will this fit??  amazon says "wont fit"**
A: this kit will fit, you may need additional f/r carriers depending on what the stock ratio is.

**Q: Will this kit work with a stock dana 35 in the rear if I buy a new carrier?**
A: no this fits the dana 44 rear / dana 30 front. 
kit # YGK006 fits the m35/d30

**Q: This says it fit my 2000 jeep dana33/44 and the ring and pinion do not mesh together. They are too far apart. Do I need a carrier?**
A: depending on the stock ratios, yes. 
the dana 30 carrier break is 3.55 / 3.73
the dana 44 carrier break is 3.73 / 3.92

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**Shop now:** [https://www.desertcart.jp/products/381623529-usa-standard-gear-re-gear-and-installation-kit-4-88](https://www.desertcart.jp/products/381623529-usa-standard-gear-re-gear-and-installation-kit-4-88)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-07*