Name: USA Standard Gear ZGK009 TJ Gear and Install Kit Package for Jeep TJ Rubicon 4.56 Ratio
Brand: USA Standard Gear
SKU: ZGK009
Price: 1238.88 USD
Availability: InStock

// THE FULL RUNDOWN

Upgrade Your Jeep's Performance with the USA Standard Gear ZGK009 If you're looking to enhance your Jeep's off-road capabilities, the USA Standard Gear ZGK009 is a fantastic choice. Designed specifically for the Jeep TJ Rubicon and Jeep Wrangler models from 2003 to 2006 , this re-gearing kit is a straightforward solution for those wanting to optimize their vehicle's performance. Fitment Product Features Re-gearing your Jeep is crucial, especially if you've upgraded to larger tires or are seeking better torque for off-road adventures. The ZGK009 provides a well-balanced gear ratio that enhances acceleration and improves overall drivability. Whether you're tackling rocky trails or cruising on the highway, this gear set ensures your Jeep performs at its best. Customer Feedback One Jeep Wrangler owner shared, “I installed the ZGK009 on my 2004 Wrangler after upgrading to 33-inch tires. The 4.56 ratio made a noticeable difference in torque and acceleration. No rubbing issues, and it feels like a whole new vehicle!” With a 1-year warranty against manufacturer defects , you can trust that USA Standard Gear stands behind their products. Upgrade your Jeep today and experience the difference that a quality gear set can make! Proposition 65 ⚠ WARNING: Cancer and Reproductive Harm https://www.P65Warnings.ca.gov

// WILL IT FIT? THE STRAIGHT ANSWER

VEHICLE	YEARS	TRIM
Jeep TJ	2003-2006	Rubicon
Jeep Wrangler	2003-2006	Rubicon

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…

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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.

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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.

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WE NEVER SEE YOUR CARD NUMBER

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// 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 #	ZGK009
SKU	ZGK009
CATEGORY	Driveline > Differentials > Differential Components
AVAILABILITY	IN STOCK
RETURNS	30-day return window

USA Standard Gear ZGK009 TJ Gear and Install Kit Package for Jeep TJ Rubicon 4.56 Ratio

// THE FULL RUNDOWN

// WILL IT FIT? THE STRAIGHT ANSWER

// GETTING IT TO YOUR GARAGE

// PAY YOUR WAY

// COVERED WHEN IT COUNTS

MORE JEEP DRIVETRAIN & AXLES

// TRAIL REVIEWS