Fits select 1999-2010 Ford E-250, E-350, Excursion, F-150, F-250, and F-350 models with the 10.5-inch rear differential.

This Yukon Gear & Axle High Performance ring and pinion gear set is engineered to provide reliable torque transfer and durability for heavy-duty Ford applications. Whether you are optimizing your drivetrain for larger tires or restoring factory performance, the 3.73 gear ratio offers a balance of acceleration and highway cruising efficiency. Yukon utilizes advanced heat-treating techniques and precise machining to ensure consistent gear tooth contact and a superior surface finish that stands up to high-stress conditions.

• Ring Gear Diameter: 10.50 inches
• Pinion Spline Count: 31-Spline
• Gear Ratio: 3.73
• Ring Gear Bolt Count: 12
• Material: High-strength steel with advanced heat treatment
• Manufacturer Part Number: YG F10.5-373-31

Fits select 1980-2014 Buick, Cadillac, Chevrolet, and GMC vehicles with GM 8.5" or 8.6" rear differentials.

USA Standard Gear ring and pinion sets are engineered to provide a reliable, high-quality solution for differential repairs and gear ratio changes. Every gear set undergoes a rigorous in-house quality evaluation to ensure it meets strict dimensional, material, and fitment standards. This set is designed to replace worn factory components or adjust your final drive ratio for improved performance in street or off-road applications.

• Ring Gear Diameter: 8.50 inches
• Gear Ratio: 3.73
• Pinion Spline Count: 30
• Ring Gear Bolt Count: 10
• Compatible Differentials: GM 8.5" and 8.6"
• Manufacturer Part Number: ZG GM8.5-373

Fits select 1964-1972 Chevrolet Bel Air, Biscayne, Camaro, Caprice, Chevelle, Chevy II, El Camino, Impala, Monte Carlo, and Nova models equipped with the GM 8.2-inch differential.

USA Standard Gear ring and pinion sets are engineered to provide a reliable solution for replacing worn factory gears or adjusting gear ratios for specific driving needs. Every set undergoes rigorous in-house quality evaluation, ensuring each component meets strict dimensional, material, and fitment standards to ensure a quiet and durable installation.

• Manufacturer Part Number: ZG GM8.2-355
• Ring Gear Diameter: 8.20"
• Gear Ratio: 3.55
• Ring Gear Bolts: 10
• Pinion Splines: 25
• Differential: GM 8.2"

Fits select 1964-1972 Buick, Chevrolet, and Pontiac passenger car models with a GM 12-bolt rear differential.

This USA Standard Ring and Pinion Gear Set is engineered to provide a reliable, high-quality solution for differential rebuilds and gear ratio changes. Designed to meet or exceed original equipment standards, each set undergoes rigorous in-house quality testing to verify dimensional accuracy, material integrity, and proper fitment. This 3.90 ratio set is ideal for drivers looking to optimize torque delivery and acceleration while maintaining the durability required for classic GM passenger car applications.

• Fits GM 12-bolt passenger car differentials
• Ring Gear Diameter: 8.875 inches
• Ring Gear Bolt Count: 12
• Pinion Spline Count: 30
• Gear Ratio: 3.90
• Manufacturer Part Number: ZG GM12P-390

Fits select 1953-2006 Ford, Chevrolet, GMC, Dodge, International, and Jeep vehicles equipped with a standard rotation Dana 44 axle. This 5.38 ratio ring and pinion gear set provides a reliable solution for replacing worn factory components or re-gearing to accommodate larger tires and improved low-end torque.

USA Standard Gear sets undergo rigorous in-house quality evaluations to ensure they meet strict dimensional and material tolerances. These gears are engineered for durability in demanding applications, providing a precise fit and smooth operation when properly shimmed and installed. This set is designed specifically for standard rotation housings and utilizes a 26-spline pinion configuration.

• Axle Model: Dana 44
• Gear Ratio: 5.38
• Rotation: Standard
• Ring Gear Diameter: 8.50"
• Ring Gear Bolts: 10
• Pinion Spline Count: 26
• Manufacturer Part Number: ZG D44-538

Fits select 1975-2014 Ford, Lincoln, and Mercury vehicles with the Ford 8.8-inch rear differential. This Yukon Gear High Performance ring and pinion gear set is engineered for drivers who demand durability and precision, whether optimizing a street vehicle for traction or restoring a classic.

Yukon Gear & Axle uses state-of-the-art design and advanced heat-treating techniques to create a gear set that meets exacting surface finish and structural tolerances. This 3.08 ratio set is designed for standard rotation applications and provides a direct replacement for worn OE components or as part of a performance re-gearing project. For long-term peace of mind, this set is covered by the Yukon Y.E.S. Plan, offering lifetime protection for as long as you own the vehicle.

• Manufacturer Part Number: YG F8.8-308
• Gear Ratio: 3.08
• Ring Gear Diameter: 8.80 inches
• Ring Gear Bolts: 10
• Pinion Spline Count: 30
• Rotation: Standard
• High-grade steel construction with advanced heat treatment

Fits select 1988-2015 Ford F-350, E-350, Chevrolet/GMC 3500, and Dodge Ram 2500/3500 vehicles with the Dana Spicer 80 rear axle.

Yukon Gear & Axle high-performance ring and pinion gear sets are engineered to provide the strength and precision required for heavy-duty applications. Designed specifically for the Dana 80 differential, this 4.11 ratio set allows for optimized torque delivery and corrected gearing when upgrading to larger tires or supporting high-horsepower engine builds. Yukon utilizes state-of-the-art design and advanced heat-treating techniques to ensure a superior surface finish and structural integrity that meets exacting tolerances.

This gear set is the benchmark for quality in the automotive gear industry, offering a reliable solution for optimizing traction and drivetrain performance. For long-term peace of mind, Yukon includes their Y.E.S. Plan, a lifetime, comprehensive protection plan for the original owner. Whether you are restoring a work truck or building a high-performance tow rig, this gear set provides the durability needed for demanding conditions.

• Manufacturer Part Number: YG D80-411
• Differential: Dana Spicer 80
• Gear Ratio: 4.11
• Ring Gear Diameter: 11.25 inches
• Ring Gear Bolts: 12
• Pinion Spline Count: 37

Fits select 1978-2015 Ford F-250 and F-350 trucks, including Super Duty models. This Yukon Gear & Axle high-performance ring and pinion gear set is engineered for Dana 60 reverse rotation (high pinion) front differentials. The 5.38 ratio provides the mechanical advantage required for oversized tires and off-road applications, effectively restoring torque and improving crawl performance.

This "Thick Gear" set is precision-engineered to install deep 5.38 gears onto a 4.11-and-down carrier, saving you the cost of a carrier replacement. Yukon utilizes advanced heat-treating techniques and state-of-the-art design to ensure a durable surface finish and precise tooth geometry. Every gear set undergoes leading-edge quality testing to meet exacting specifications for strength and quiet operation under load.

• Manufacturer Part Number: YG D60R-538R-T
• Differential Fitment: Dana Spicer 60 Reverse Rotation (High Pinion)
• Gear Ratio: 5.38
• Ring Gear Diameter: 9.75 inches
• Ring Gear Bolts: 12
• Pinion Spline Count: 29
• Carrier Compatibility: Thick gear for 4.11 and down carrier

Fits select 1978-2015 Ford F-250 and F-350, including Super Duty models.

Yukon Gear & Axle high-performance ring and pinion gear sets are engineered for drivers who require maximum durability when upgrading to larger tires or increasing horsepower. This Dana 60 reverse rotation gear set is manufactured using advanced heat-treating techniques and precision quality testing to ensure a superior surface finish and exact tooth contact. This specific "thick" gear design is engineered to fit 4.11 and down carriers, allowing you to move to a 5.13 ratio without the expense of a new differential carrier.

• Manufacturer Part Number: YG D60R-513R-T
• Differential: Dana Spicer 60 (Reverse Rotation)
• Gear Ratio: 5.13
• Ring Gear Diameter: 9.75 inches
• Ring Gear Bolt Count: 12
• Pinion Spline Count: 29
• Design Type: Thick gear (fits 4.11 and down carrier)

Fits select 1960-2014 Chevrolet, Dodge, Ford, GMC, and Plymouth vehicles equipped with a Standard Rotation Dana Spicer 60 axle.

This Yukon Gear & Axle High Performance gear set is engineered to provide the strength and precision required for high-horsepower applications and vehicles running oversized tires. These ring and pinion sets are manufactured using advanced heat-treating techniques and state-of-the-art design processes to ensure the structure and surface finish meet exacting standards for durability and quiet operation.

This specific "Thick" gear configuration is designed for use on a 4.11 and down differential carrier, allowing you to move to a 5.13 ratio without replacing the factory carrier. This set provides a reliable solution for optimizing traction and torque delivery in heavy-duty or off-road environments.

• Axle Application: Dana Spicer 60 (Standard Rotation)
• Gear Ratio: 5.13
• Carrier Fitment: Thick gear for 4.11 & down carriers
• Ring Gear Diameter: 9.75 inches
• Ring Gear Bolt Count: 12
• Pinion Spline Count: 29
• Manufacturer Part Number: YG D60-513T

Fits select 1985-2004 Ford E-250, E-350, F-150, F-250, and F-350 trucks. Yukon Gear & Axle high-performance ring and pinion gear sets are engineered to handle the increased loads of larger tires and high-horsepower applications. Each gear set is manufactured using state-of-the-art design software and advanced heat-treating processes to ensure a precise tooth mesh and a durable surface finish that meets exacting specifications.

This ring and pinion set is a direct upgrade for Ford 10.25-inch differentials, helping to optimize traction and restore performance after drivetrain modifications. The gear set features the long pinion design and is backed by the available Yukon Y.E.S. Plan for long-term protection.

• Manufacturer Part Number: YG F10.25-373L
• Ring Gear Diameter: 10.25"
• Gear Ratio: 3.73
• Pinion Spline Count: 31
• Pinion Design: Long Pinion
• Ring Gear Bolts: 12

Fits select 1980-2014 Buick, Cadillac, Chevrolet, and GMC vehicles equipped with GM 8.5" or 8.6" rear differentials.

The Yukon Gear High Performance ring and pinion gear set is the industry standard for strength and reliability. These gear sets are engineered using state-of-the-art design software and advanced heat-treating processes to ensure the structure and surface finish meet exacting tolerances. Whether you are compensating for larger tires, increased horsepower, or seeking to optimize traction, Yukon provides the precision necessary for quiet operation and long-term durability in demanding street or off-road environments.

• Manufacturer Part Number: YG GM8.5-488
• Ring Gear Diameter: 8.50"
• Gear Ratio: 4.88
• Pinion Spline Count: 30
• Ring Gear Bolts: 10
• Fits Differential Types: GM 8.5" and GM 8.6"

This gear set is eligible for the Yukon Y.E.S. Plan, a comprehensive lifetime protection plan available to the original purchaser.