What is the purpose of a 5.38 gear ratio?

A 5.38 gear ratio generally provides more torque to the wheels, which is beneficial for accelerating with larger tires or for towing heavier loads. It effectively multiplies the engine's power output to the drive wheels.

What does 'Needs Notched X/P' mean for installation?

This means the pinion yoke (the part that connects to the driveshaft) needs to have a specific notch or modification to properly fit and install this ring and pinion set. You may need to purchase a compatible yoke or modify your existing one.

What vehicles typically use the GM 8.5-inch rear axle?

The GM 8.5-inch rear axle is common in many rear-wheel-drive GM trucks and SUVs. Examples include models like the Chevrolet C1500, Cadillac Escalade, and Chevrolet Avalanche, spanning several decades.

Yukon Gear & Axle 8.5in GM 5.38 Ring & Pinion ZG GM8.5-538

Name: USA Standard 8.5in GM 5.38 Ring & Pinion (Needs Notched X/P)
Brand: Yukon Gear & Axle
Price: 363.89 USD
Availability: InStock

USA Standard 8.5in GM 5.38 Ring & Pinion (Needs Notched X/P)

$363.89

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Yukon Gear & Axle 8.5in GM 5.38 Ring & Pinion (Needs Notched X/P). A well-built gear set for improved off-road or towing performance.

Key Features

Fits a wide range of 8.5-inch GM rear axles.
Features a 5.38 gear ratio, ideal for larger tires or increased towing torque.
Designed to exceed original equipment manufacturer specifications.
Undergoes rigorous in-house quality evaluation for dimensional, material, and fitment accuracy.
Requires a notched pinion yoke (X/P) for installation.

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Product Details

Yukon Gear & Axle is known for making solid drivetrain components, and this USA Standard 8.5-inch GM ring and pinion set is no different. If you're looking to change your vehicle's final drive ratio for better performance, especially for larger tires or towing, a 5.38 ratio can make a notable difference. This set is designed to exceed OEM specifications, meaning it's built to handle the demands of your drivetrain. Rigorous quality checks ensure that each set meets dimensional, material, and fitment standards before it leaves the factory.

This particular ring and pinion set features a 5.38 ratio, which is a popular choice for those running larger tires or needing more torque for towing applications. It's important to note that this specific set requires a notched pinion yoke (X/P) for installation, so be sure to check your existing setup or plan accordingly. The USA Standard line from Yukon Gear & Axle focuses on providing reliable parts that offer great value, making them a solid option for many GM trucks and SUVs from the 1980s through the early 2010s, including models like the Chevrolet C1500, Cadillac Escalade, and Buick Rainier.