USA Standard Gear

Ring and Pinion Gear Set 3.73 Ratio

$296.89

SKU: ZG GM9.25-373R

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

Description

The USA Standard Gear ZG GM9.25-373R is a ring and pinion gear set specifically designed for GM 9.25" IFS (Independent Front Suspension) front differentials with reverse rotation. This set provides a 3.73 gear ratio, which is beneficial for improving towing, off-road, and racing performance. This gear set features a 9.25-inch ring gear diameter and a 30-spline pinion, requiring 12 ring gear bolts for installation. This testing covers dimensional accuracy, material integrity, and precise fitment to ensure reliable performance. This ring and pinion set is compatible with GM 9.25" front differentials. Specific fitment details indicate it is suitable for 1988-2018 GM AAM 9.25" IFS front differentials.

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 NumberZG GM9.25-373R
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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