USA Standard Gear

4.11 Ratio Ring and Pinion Gear Kit 8.5

$530.89

SKU: ZGK2023

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The USA Standard Gear ZGK2023 is a comprehensive ring and pinion gear and installation kit designed to re-gear differentials efficiently. It is specifically designed for applications with a 10-bolt rear cover and a 10-bolt ring gear. The ZGK2023 features a 4.11 gear ratio and an 8.5" ring gear diameter, making it suitable for vehicles requiring a specific ratio change. The kit ensures you have everything needed for the job, providing a one-stop shopping experience for common differential repairs at an affordable price. This package contains a variety of essential components, including axle bearings and seals, carrier bearings and races (with a 1.781" inside diameter and 3.062" outside diameter), crush sleeve or preload shims, head and tail bearings, pinion nut and seal, pinion shims, brush, marking compound, Loctite, and a cover gasket or silicone. It also includes ring gear bolts and an instruction manual. Note that this kit does not include a positraction unit.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandUSA Standard Gear
Part NumberZGK2023
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy