Yukon Gear 4.56 V6/Turbo Differential Ring & Pinion Gear Set for Toyota 8" Differential 4WD (1986-95 4Runner/Pickup)
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Yukon Gear V6/Turbo Differential 4.56 Ring & Pinion Gear Set For Toyota 8" Differential
For 1986–1995 4WD Toyota Pickup & 1986–1995 4WD Toyota 4Runner Equipped with Toyota 8" Differentials and 22R-TE or 3VZ-E Engines
Overview
The Yukon Gear 4.56 Ring & Pinion Gear Set is a premium differential upgrade designed specifically for Toyota 4WD trucks and SUVs equipped with the stronger V6/Turbo Toyota 8-inch rear differential. Featuring a 4.56:1 gear ratio and heavy-duty 29-spline pinion design, this gear set is engineered to restore lost performance from larger tires, improve towing capability, enhance off-road traction, and strengthen drivetrain reliability.
Manufactured using precision machining, advanced heat-treatment processes, and strict quality control standards, Yukon ring and pinion gear sets are trusted by professional differential builders, restoration shops, overland enthusiasts, and off-road drivers worldwide.
The 4.56 ratio offers an excellent balance between highway drivability and off-road performance, making it one of the most versatile gearing upgrades available for Toyota V6 and turbocharged applications.
Why Upgrade to 4.56 Gears?
The 4.56:1 ratio is ideal for Toyota owners running moderately larger tires who want improved acceleration, towing performance, and trail capability without significantly increasing highway RPM.
Performance Benefits
- Improved low-speed torque multiplication
- Better throttle response
- Restores power lost from larger tires
- Enhanced towing and hauling capability
- Reduced clutch and transmission strain
- Improved drivability in mountainous terrain
- Better off-road performance
- Lower highway RPM compared to 4.88 and 5.29 gear ratios
For many Toyota owners running 31-inch to 33-inch tires, 4.56 gears provide an excellent balance of trail performance and daily driving comfort.
Heavy-Duty 29-Spline Pinion Design
Unlike factory Toyota gear sets that commonly utilize a smaller 27-spline pinion shaft, Yukon engineers this gear set around a larger and stronger 29-spline design.
Advantages of the 29-Spline Upgrade
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Larger pinion shaft diameter
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Increased drivetrain strength
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Improved resistance to pinion failure
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Better durability under heavy loads
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Ideal for oversized tire applications
-
Improved long-term reliability
This upgraded design strengthens one of the most highly 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 uses 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
These components are included when selecting:
29-Spline Gears + 27-to-29 Spline Conversion Hardware Kit
under the Installation Spline Configuration option.
This package provides the required hardware needed to convert factory 27-spline applications to the stronger 29-spline Yukon setup.
Precision Yukon Engineering
Every Yukon ring and pinion gear set is engineered to meet strict quality, durability, and performance standards.
Construction Features
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Precision-machined ring and pinion gears
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Advanced heat-treated alloy steel construction
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Optimized gear tooth geometry
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Premium surface finishing process
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Quality-tested gear tooth patterns
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Designed for quiet operation
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Engineered for long service life
These manufacturing processes help ensure proper gear mesh, smooth operation, and dependable long-term performance.
Built for Off-Road & Heavy-Duty Use
Yukon gear sets are designed to withstand demanding environments ranging from daily driving to extreme off-road use.
Durability Benefits
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High-strength gear construction
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Excellent wear resistance
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Designed for oversized tire applications
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Compatible with many locking differentials
-
Proven performance under heavy loads
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Long-term drivetrain reliability
Whether your Toyota spends its time on the highway, trail, or deep in the backcountry, Yukon gears are built to perform.
Identifying the Correct Differential Housing
4-Cylinder vs V6/Turbo Third Members
Toyota produced two different Toyota 8-inch differential housings. Selecting the correct gear set depends on which third member your vehicle is equipped with.
Standard 4-Cylinder Housing
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Three external reinforcement ribs
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Found in most 20R, 22R, and 22RE applications
- Requires the Yukon 4-Cylinder gear set
V6/Turbo Housing
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Four prominent reinforcement ribs
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Distinct trapezoid-shaped upper rib
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Found in most 22R-TE and 3VZ-E applications
-
Uses this gear set
Quick Visual Identification
Look at the outside of the third member housing:
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3 Ribs = Standard 4-Cylinder Differential
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4 Ribs + Top Trapezoid Rib = V6/Turbo Differential
If your vehicle is equipped with a factory 4-Cylinder third member, use the Yukon 4-Cylinder-specific gear set instead. Click Here
Yukon Y.E.S. Protection Plan
Yukon offers one of the strongest protection programs available in the differential industry.
Coverage Benefits
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Eligible for Yukon Y.E.S. Protection Plan
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Lifetime protection available
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No-questions-asked coverage
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Protection available for as long as you own the vehicle
Refer to Yukon warranty requirements and installation guidelines for complete coverage details.
Ideal Applications
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31-inch to 33-inch tire upgrades
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Daily-driven 4WD vehicles
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Off-road builds
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Overland vehicles
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Expedition rigs
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Towing applications
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Restoration projects
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Performance drivetrain upgrades
Vehicle Compatibility
Toyota Pickup
1986–1988 Toyota Pickup
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4WD Models
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Toyota 8" Rear Differential
- 22R-TE and 3VZ-E Equipped Vehicles
1989–1995 Toyota Pickup
-
4WD Models
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Toyota 8" Rear Differential
- 22R-TE and 3VZ-E Equipped Vehicles
Toyota 4Runner
1986–1989 Toyota 4Runner
-
4WD Models
-
Toyota 8" Rear Differential
- 22R-TE and 3VZ-E Equipped Vehicles
1990–1995 Toyota 4Runner
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4WD Models
-
Toyota 8" Rear Differential
- 22R-TE and 3VZ-E Equipped Vehicles
Fitment Notes
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Toyota 8-inch differential applications only
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Designed specifically for V6 and turbocharged Toyota applications
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Compatible with 22R-TE and 3VZ-E equipped vehicles
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4.56:1 gear ratio
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Heavy-duty 29-spline pinion design
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Requires matching 29-spline yoke, seal, and pinion nut
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Will not fit Toyota 7.5-inch IFS front differentials
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Professional installation recommended
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Proper gear break-in required
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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 without converting to a standard Toyota 8-inch carrier and third-member assembly.
📊 Classic Toyota Gear Ratio to Tire Size Matrix
Applies to 1979–1995 Toyota Pickups & 4Runners with factory 20R, 22R, 22R-E, 22R-TE or 3VZ-E engines.
|
Tire Size |
Best All-Around Ratio |
Drive Style / Terrain Guidance |
|
30" Tires |
4.11 (Factory Stock) |
Stick with factory 4.11s for flat highway commuting. Bump to 4.56 if the truck carries heavy overland gear or works in hilly regions. |
|
31" Tires |
4.56 |
The Restorer Sweet Spot. 4.56 perfectly corrects the speedometer and restores factory acceleration without over-revving on the highway. |
|
32" Tires |
4.88 (Performance) |
Choose 4.56 if you prioritize maximum highway fuel economy. Choose 4.88 if you want crisp acceleration around town and extra trail torque. |
|
33" Tires |
4.88 |
The Weekend Warrior Standard. 4.88 keeps the truck comfortable at 70 MPH while waking up the engine's low-end crawl power. |
|
34" Tires |
5.29 |
Highly recommend 5.29. The narrow power band of the 22RE/3VZE requires the deeper mechanical advantage of 5.29s to pull 5th gear. |
|
35" Tires |
5.29 |
The absolute limit for standard axles. 5.29 keeps the small engine in its optimal high-power RPM band to handle massive rolling mass. |
|
35"+ (37" to 40") |
5.29 + Dual Cases |
5.29 is the lowest safe differential ratio. For tires larger than 35", builders must combine 5.29 gears with a crawler box/dual transfer case setup |
Available Configurations
Standard Gear Set
Includes:
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(1) Yukon 4.56 Ring Gear
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(1) Yukon 4.56 Pinion Gear
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Installation Instructions
Gear Set + 29-Spline Conversion Hardware Kit
Includes:
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(1) Yukon 4.56 Ring Gear
-
(1) Yukon 4.56 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.