Yukon Gear 5.29 4-Cylinder Ring & Pinion Gear Set for Toyota 8" Differential 4WD (1979-95 4Runner/Pickup)

Yukon Gear 4-Cylinder 5.29 Ring & Pinion Gear Set For Toyota 8" Differential

For 1979–1995 4WD Toyota Pickup & 1984–1995 4WD Toyota 4Runner Equipped with Toyota 8" Differentials and 20R, 22R, 22RE Engines

Overview

The Yukon Gear 5.29 Ring & Pinion Gear Set is a premium differential gearing upgrade designed for Toyota 4WD trucks and SUVs equipped with Toyota's legendary 8-inch rear differential. Featuring a deep 5.29:1 gear ratio and a heavy-duty 29-spline pinion design, this gear set is engineered to maximize low-speed torque, improve crawling performance, restore power lost to oversized tires, and increase drivetrain durability in demanding conditions.

Manufactured using advanced machining, precision heat treatment, and rigorous quality control processes, Yukon gear sets are trusted by professional installers, off-road enthusiasts, overlanders, and restoration builders worldwide.

Whether you're running 35-inch tires, building a dedicated trail rig, towing heavy loads, or upgrading a classic Toyota Pickup or 4Runner, Yukon 5.29 gears deliver exceptional performance and long-term reliability.

Why Upgrade to 5.29 Gears?

The 5.29 ratio is one of the most aggressive gear ratios available for Toyota 8-inch differentials and is commonly chosen for vehicles running larger tires or spending significant time off-road.

Performance Benefits

• Maximum low-speed torque multiplication

• Improved rock crawling capability

• Restores power lost to oversized tires

• Improved acceleration and throttle response

• Better clutch and transmission longevity

• Enhanced towing performance

• Improved drivability in mountainous terrain

• Increased control during technical off-road driving

For Toyota owners running 35-inch tires or larger, 5.29 gears are often the preferred choice for restoring factory-like performance while significantly improving trail capability.

Heavy-Duty 29-Spline Pinion Design

Unlike factory Toyota gear sets that commonly use a smaller 27-spline pinion shaft, Yukon engineers this gear set with a stronger 29-spline pinion for increased durability and load capacity.

Advantages of the 29-Spline Upgrade

• Larger pinion shaft diameter

• Increased drivetrain strength

• Improved resistance to pinion failure

• Better durability under extreme loads

• Ideal for off-road, towing, and oversized tire applications

• Improved long-term reliability

This upgraded design helps strengthen one of the most heavily stressed components within the differential assembly.

Important 29-Spline Conversion Information

Please Read Before Ordering

Most 1979–1995 Toyota Pickup and 1984–1995 Toyota 4Runner models originally came equipped with 27-spline pinion hardware.

Because this Yukon gear set utilizes a larger 29-spline pinion shaft, additional conversion components are required for installation.

Required Conversion Components

• 29-Spline Companion Flange / Yoke

• 29-Spline Pinion Seal

• 29-Spline Pinion Nut

To simplify installation, these components are available when selecting the:

"29-Spline Gears + 27-to-29 Spline Conversion Hardware Kit"

under the Installation Spline Configuration option.

This package includes the required components needed to convert factory 27-spline applications to the stronger 29-spline Yukon setup.

Precision Yukon Engineering

Yukon Gear & Axle utilizes advanced manufacturing processes to ensure every gear set meets strict performance and durability standards.

Construction Features

• Precision-machined ring and pinion gears

• Advanced heat-treated alloy steel construction

• Optimized gear tooth geometry

• Premium surface finishing process

• Quality-tested gear patterns

• Designed for quiet operation

• Engineered for long service life

These manufacturing processes help ensure smooth engagement, proper wear characteristics, and dependable long-term performance.

Built for Extreme Off-Road & Heavy-Duty Use

Yukon gear sets are designed to withstand demanding environments ranging from daily driving to extreme trail use.

Durability Benefits

• High-strength gear construction

• Excellent wear resistance

• Designed for oversized tire applications

• Compatible with many locking differentials

• Proven performance under heavy loads

• Long-term drivetrain reliability

Whether your Toyota is a dedicated crawler, overland vehicle, or work truck, Yukon gears are engineered to perform under demanding conditions.

Yukon Y.E.S. Protection Plan

Yukon offers one of the most comprehensive protection programs in the differential industry.

Coverage Benefits

• Eligible for Yukon Y.E.S. Protection Plan

• Lifetime protection available

• No-questions-asked coverage

• Protection available for as long as you own the vehicle

Refer to Yukon warranty requirements and installation guidelines for complete coverage details.

Ideal Applications

• 35-inch and larger tire upgrades

• Rock crawling

• Technical off-road driving

• Overland vehicles

• Expedition rigs

• Heavy towing applications

• Restoration projects

• Performance drivetrain upgrades

Vehicle Compatibility

Toyota Pickup

1979–1983 Toyota Pickup

• 4WD Models

• Toyota 8" Rear Differential

• 20R and 22R Equipped Vehicles

1984–1988 Toyota Pickup

• 4WD Models

• Toyota 8" Rear Differential

• 22R, 22RE Equipped Vehicles

1989–1995 Toyota Pickup

• 4WD Models

• Toyota 8" Rear Differential

• 22R, 22RE Equipped Vehicles

Toyota 4Runner

1984–1989 Toyota 4Runner

• 4WD Models

• Toyota 8" Rear Differential

• 22R, 22RE Equipped Vehicles

1990–1995 Toyota 4Runner

• 4WD Models

• Toyota 8" Rear Differential

• 22RE Equipped Vehicles

Additional Applications

1975–1990 Toyota Land Cruiser

• Equipped with compatible Toyota 8" differentials

Fitment Notes

• Designed for Toyota 8-inch differential applications only

• Designed specifically for 4-cylinder Toyota applications

• Compatible with 20R, 22R, 22RE engines

• 5.29:1 gear ratio

• Heavy-duty 29-spline pinion design

• Requires matching 29-spline yoke, seal, and pinion nut

• Will not fit Toyota 7.5-inch IFS front differentials

• Professional installation recommended

• Proper gear break-in required

• Verify carrier and locker compatibility before ordering

Factory G254 Differential Warning

Certain Toyota applications were equipped with the rare factory G254 4.88 differential assembly. This Yukon gear set is not compatible with those factory carrier configurations.

Available Configurations

Standard Gear Set

Includes:

• (1) Yukon 5.29 Ring Gear

• (1) Yukon 5.29 Pinion Gear

• Installation Instructions

Gear Set + 29-Spline Conversion Hardware Kit

Includes:

• (1) Yukon 5.29 Ring Gear

• (1) Yukon 5.29 Pinion Gear
  

• (1) 29-Spline Companion Flange / Yoke

• (1) 29-Spline Pinion Seal

• (1) 29-Spline Pinion Nut

• Installation Instructions

This option provides the necessary hardware required to convert factory 27-spline applications to the stronger 29-spline Yukon setup.