Name: USA Standard Gear Jeep Gear and Install Kit for XJ YJ Dana 30 Front Chrysler 8.25 Rear 4.88 Ratio
Brand: USA Standard Gear
SKU: ZGK004
Price: 1184.28 USD
Availability: InStock

// THE FULL RUNDOWN

USA Standard Gear ZGK004: Precision Re-Gearing Solution The USA Standard Gear ZGK004 package is designed for those looking to re-gear their four-wheel drive vehicles with efficiency and precision. This kit is specifically tailored for the Jeep XJ and YJ models equipped with a reverse rotation Dana Spicer 30 front axle and a Chrysler 8.25-inch rear axle. Key Features: Constructed with high-quality materials, the ZGK004 ensures durability and reliability under demanding conditions. The precision engineering of the ring and pinion sets provides improved power transfer and responsiveness, making it a solid upgrade for off-road enthusiasts and daily drivers alike. This package comes with a 1-year warranty against manufacturer defects, providing peace of mind with your purchase. Whether you're tackling tough trails or enhancing your Jeep's capabilities for everyday driving, the USA Standard Gear ZGK004 is a practical solution for your re-gearing needs. Proposition 65 ⚠ WARNING: Cancer and Reproductive Harm https://www.P65Warnings.ca.gov

// WILL IT FIT? THE STRAIGHT ANSWER

VEHICLE	YEARS	TRIM
Jeep Cherokee	1984-1994	Base
Jeep Cherokee	1985-1992	Laredo
Jeep Cherokee	1985-1988	Chief
Jeep Cherokee	1985-1990	Pioneer
Jeep Cherokee	1987-1992, 1998-2001	Limited
Jeep Cherokee	1989-2001	Sport
Jeep Cherokee	1991-1992	Briarwood
Jeep Cherokee	1993-1997	Country
Jeep Cherokee	1994-2001	SE
Jeep Cherokee	1996, 1998-2001	Classic
Jeep Wrangler	1987-1995	Base
Jeep Wrangler	1987-1990	Laredo
Jeep Wrangler	1987-1988	Sport
Jeep Wrangler	1988-1992	Islander
Jeep Wrangler	1988-1995	Sahara
Jeep Wrangler	1988, 1991-1994	S
Jeep Wrangler	1991-1994	Renegade
Jeep Wrangler	1994-1995	SE
Jeep Wrangler	1995	Rio Grande

JAP FITMENT PROMISE // If we confirm fitment for your rig and it doesn't fit, return shipping is on us. No restocking fee. That's the deal.

// GETTING IT TO YOUR GARAGE

THIS PART //

Ships UPS/FedEx ground — estimated $49.95. Additional ground items in the same order ship at reduced rates. Exact rate calculated at checkout.

REAL-COST SHIPPING

We charge what the carrier charges — no padding, no games. Ground parcels via UPS/FedEx, signature required. You see the exact number before you pay.

1-2 DAY HANDLING

Most in-stock parts leave the warehouse within 1-2 business days. Built-to-order parts show extended lead times.

LTL FREIGHT FOR THE BIG STUFF

Bumpers, hardtops, axles and full kits ship LTL truck freight (typically $400-500 per unit, plus shipping protection). Freight is charged per unit — two bumpers means two freight charges. Inspect before signing and note any damage on the delivery receipt.

30-DAY RETURNS

Unused, uninstalled parts in original packaging within 30 days. RMA required — start with a quick message. Shipping charges are non-refundable; freight returns quote at carrier rates.

FULL SHIPPING & RETURNS POLICY

// PAY YOUR WAY

CHECKING PAYMENT NETWORK…

ALL MAJOR CARDS + WALLETS

Visa, Mastercard, Amex, Discover, Apple Pay, Google Pay and Link one-tap checkout — live in our Stripe checkout right now. Card numbers never touch our servers.

BUY NOW, PAY LATER — LIVE

Klarna, Afterpay and Zip are active at checkout on eligible orders. Pick your split at payment — get the lift now, pay as you wheel. No JAP paperwork, approval happens right in checkout.

CRYPTO — LIVE AT CHECKOUT

Pay with crypto directly in our Stripe checkout — select the crypto option at payment and settle in USDC and supported coins. On-chain payment, standard order flow, same warranty.

3-D SECURE + RADAR ANTI-FRAUD

Every card payment runs Stripe Radar machine-learning fraud screening, with 3-D Secure (Visa Secure / Mastercard Identity Check) stepping in automatically when your bank requires it. Your card, verified by your bank.

PCI-DSS L1

HIGHEST CARD-SECURITY CERTIFICATION

AES-256 + TLS 1.3

ENCRYPTED IN TRANSIT & AT REST

TOKENIZED

WE NEVER SEE YOUR CARD NUMBER

Payments are processed by Stripe — the same infrastructure behind Amazon, Ford and Shopify checkouts. Dispute protection and receipt trails on every order. See our Privacy Policy.

// COVERED WHEN IT COUNTS

THIS PART //

Backed by the full USA Standard Gear manufacturer warranty. JAP is an authorized dealer — your warranty is valid from day one.

FULL MANUFACTURER WARRANTY

Every part ships new in the box with the manufacturer's standard warranty — terms and duration vary by brand (typically 1 year to limited lifetime on hard parts). We only sell through authorized channels, so coverage is never voided by gray-market sourcing.

WE RUN THE CLAIM WITH YOU

Warranty issue? Don't fight the manufacturer's phone tree alone. Hit our team with your order number and photos — we open the claim with the brand and stay on it until it's resolved.

WHAT WARRANTY DOESN'T COVER

Defects in materials and workmanship are covered. Trail damage, improper installation, modification, and normal wear items (bushings, pads, wear plates) generally are not — that's standard across every brand we carry.

SEPARATE FROM RETURNS

Warranty claims (defects after use) and returns (unused parts within 30 days) are different lanes. Not sure which applies? Message us first — we'll route it the fast way.

START A WARRANTY CLAIM

FITMENT	Jeep - See Description
BRAND	USA Standard Gear — shop all USA Standard Gear parts →
PART #	ZGK004
SKU	ZGK004
CATEGORY	Driveline > Differentials > Differential Components
AVAILABILITY	IN STOCK
RETURNS	30-day return window

USA Standard Gear Jeep Gear and Install Kit for XJ YJ Dana 30 Front Chrysler 8.25 Rear 4.88 Ratio

// THE FULL RUNDOWN

// WILL IT FIT? THE STRAIGHT ANSWER

// GETTING IT TO YOUR GARAGE

// PAY YOUR WAY

// COVERED WHEN IT COUNTS

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