USA Standard Gear

Rear Ring and Pinion Kit with Yukon Dura Grip Limited Slip

$2,381.99

SKU: ZGK2178

In Stock
In Stock
Ships by Sep 1
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The USA Standard Gear ZGK2178 is a comprehensive rear ring and pinion kit engineered to significantly enhance differential performance. The Yukon Dura Grip limited-slip unit offers smooth yet aggressive traction, providing the confidence needed for diverse driving conditions. It is built for durability with a high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches, ensuring long life and full rebuildability. USA Standard Gear upholds rigorous in-house quality testing to ensure all gears meet strict dimensional, material, and fitment standards. This specific kit is tailored for applications with an 11.25" Dana 80 differential, featuring a 3.54 gear ratio, 35 spline count, and designed for carrier cases that accommodate 3.73 and down gear ratios. It is compatible with rear covers having 10 bolts and ring gears with 12 bolts. The kit is a direct way to improve traction by upgrading the gear ratio and incorporating a limited-slip differential simultaneously.

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

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Specifications

BrandUSA Standard Gear
Part NumberZGK2178
CategoryDrivetrain

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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.

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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.

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