Drivetrain› Differentials and Rear-End Components

USA Standard Gear

3.08 Ring & Pinion and Limited Slip Diff Kit

$1,427.99

SKU: ZGK2231

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The USA Standard Gear ZGK2231 is a differential re-gear and traction kit designed to increase performance. This kit includes a 3.08 ring and pinion gear set, a Yukon Dura Grip limited slip positraction unit, and a master installation kit with Koyo bearings.
Show original supplier description
The USA Standard Gear ZGK2231 is a comprehensive differential re-gear and traction kit aimed at significantly enhancing a vehicle's performance. The Yukon Dura Grip is engineered for both smooth and aggressive traction, ensuring confidence across various terrains, and is built for durability and re-buildability with its high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches. The ZGK2231 kit is specifically designed for applications with a 12-bolt rear cover and a 12-bolt ring gear, featuring an 8.875-inch ring gear diameter. The included ring and pinion gear set offers a 3.08 ratio, providing an upgrade over stock configurations. This kit streamlines the process of upgrading both the gear ratio and adding a limited-slip differential simultaneously. USA Standard Gear emphasizes rigorous in-house quality testing to ensure its gears meet dimensional, material, and fitment standards, making them suitable for everyday commuting, trail running, and spirited driving.

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 NumberZGK2231
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy