Name: Crown Automotive Ring & Pinion Kit 4.10 Ratio for Jeep J20 1974-1988 with Dana 60 Rear Axle
Brand: Crown Automotive
SKU: J8129235
Price: 1086.89 USD
Availability: InStock

// THE FULL RUNDOWN

Crown Automotive J8129235 Ring & Pinion Kit The Crown Automotive J8129235 is a precision-engineered Ring and Pinion Kit specifically designed for the Jeep J-20 Truck equipped with a Dana 60 rear axle. This kit features a 4.10 gear ratio, making it an ideal choice for those looking to enhance their vehicle's performance and torque delivery. Key Specifications Included Components This comprehensive kit includes all necessary components for installation: Installation Notes Designed for a straightforward installation, this kit fits the rear axle of the Jeep J-20 models from 1974 to 1988. It is compatible with any transfer case and transmission, ensuring versatility for your build. Fitment This Ring and Pinion Kit is confirmed to fit the following Jeep J-20 model years: Upgrade your Jeep's drivetrain with the Crown Automotive J8129235 Ring & Pinion Kit for improved performance and reliability. Proposition 65 ⚠ WARNING: Cancer and Reproductive Harm https://www.P65Warnings.ca.gov

// WILL IT FIT? THE STRAIGHT ANSWER

VEHICLE	YEARS	TRIM
Jeep J-100	1969-1973	Base
Jeep J-2500	1969-1973	Base
Jeep J-2600	1969-1973	Base
Jeep J-2700	1969-1970	Base
Jeep J-3500	1969-1970	Base
Jeep J-3600	1969-1970	Base
Jeep J-3700	1969-1970	Base
Jeep J-3800	1969-1971	Base
Jeep J-4500	1970-1973	Base
Jeep J-4600	1970-1973	Base
Jeep J-4700	1970-1973	Base
Jeep J-4800	1970-1973	Base
Jeep J10	1974-1983	Base
Jeep J10	1982	Laredo
Jeep J20	1974-1983	Base

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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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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// COVERED WHEN IT COUNTS

THIS PART //

Backed by the full Crown Automotive 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	Crown Automotive — shop all Crown Automotive parts →
PART #	J8129235
SKU	J8129235
CATEGORY	Driveline > Differentials > Ring and Pinion
AVAILABILITY	IN STOCK
RETURNS	30-day return window

Crown Automotive Ring & Pinion Kit 4.10 Ratio for Jeep J20 1974-1988 with Dana 60 Rear Axle

// 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