GM 7.5/7.6/7.625-Inch 3.90 Ratio Ring and Pinion Gear Kit

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Drivetrain› Differentials and Rear-End Components

Richmond Gear

GM 7.5/7.6/7.625-Inch 3.90 Ratio Ring and Pinion Gear Kit

Name: GM 7.5/7.6/7.625-Inch 3.90 Ratio Ring and Pinion Gear Kit
Brand: Richmond Gear
SKU: GM75390TK

$235.99

SKU: GM75390TK

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$100 Minimum Order

Non-Returnable Item

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Moderate — 2–4 hours

Overview

The Richmond Gear GM75390TK is a thick ring and pinion gear kit designed for GM 7.5/7.6/7.625-inch axles. It features a 3.90 gear ratio and is constructed from durable 8620 steel. This kit includes the axle ring and pinion gear, utilizing 10 cover bolts for installation. It comes with a limited 1-year/50,000-mile warranty and has a raw metal finish.

Show original supplier description

The EXCEL from Richmond 7.50-Inch Axle Thick Ring and Pinion Gear Kit offers a robust upgrade with a 3.90 gear ratio for GM 7.5, 7.6, or 7.625-inch axles. Precision-machined from 8620 steel, this gear set boasts a raw metal finish for enhanced resistance to wear and heat. The 1.438-inch pinion shaft with 13 gear teeth ensures efficient power transfer and quiet operation. The thicker ring design contributes to its overall durability, making it a reliable choice for aggressive builds. Installation is designed to be a direct replacement using standard automotive tools and procedures, requiring approximately 3 hours and mechanical expertise or professional installation. The kit includes one axle ring and one pinion gear, using 10 cover bolts. This EXCEL from Richmond gear kit is specifically designed to fit 1993-2002 Chevrolet Camaro models. It is backed by a limited 1-year or 50,000-mile warranty, covering defects in materials and workmanship.

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

Brand	Richmond Gear
Part Number	GM75390TK
Category	Drivetrain

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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

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