Rear Ring and Pinion Gear Set with Master Install Kit

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Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Rear Ring and Pinion Gear Set with Master Install Kit

Name: Rear Ring and Pinion Gear Set with Master Install Kit
Brand: USA Standard Gear
SKU: ZGK2038

$1,496.98 $1,356.36 Save $140.62

SKU: ZGK2038

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Overview

The USA Standard Gear ZGK2038 is a rear ring and pinion gear set and master install kit package. This kit includes a 3.55 ratio ring and pinion, a Yukon Dura Grip limited slip positraction unit, and a 2.53-inch OD axle bearing and seals. The ring gear diameter is 8.5 inches, with 10 cover bolts and 10 ring gear bolts.

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The USA Standard Gear ZGK2038 is a comprehensive rear ring and pinion gear set and master install kit designed for enhanced differential performance. This package features a 3.55 ratio ring and pinion set, paired with a Yukon Dura Grip limited slip positraction unit for improved traction across various terrains. Constructed with a high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches, the Yukon Dura Grip is engineered for durability and is fully rebuildable. USA Standard Gear ensures its components meet rigorous quality standards through in-house testing for dimensional accuracy, material integrity, and proper fitment. This kit is ideal for those looking to increase traction and upgrade their gear ratio in a single, convenient part number, suitable for everyday commuting, trail running, or spirited driving. Key specifications include an 8.5-inch ring gear diameter, 31-spline pinion for the limited slip, 10 cover bolts, and 10 ring gear bolts. The master install kit is designed for carrier cases intended for 4.10 and up gear ratios.

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.

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Specifications

Brand	USA Standard Gear
Part Number	ZGK2038
Category	Drivetrain

Videos

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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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