USA Standard Gear ZGK2029: 8.6" GM 4.56 Rear Ring & Pinion Gear Set

The USA Standard Gear ZGK2029 is a comprehensive re-gear and traction kit designed for GM vehicles equipped with an 8.6" rear differential. This kit features a 4.56 ratio ring and pinion gear set, an installation kit, and a 30 spline Yukon Dura Grip limited slip positraction unit, making it an ideal choice for those looking to enhance traction and performance.

Key Specifications

• Gear Ratio: 4.56
• Differential Type: 8.6" GM
• Positraction Unit: Yukon Dura Grip (30 Spline)
• Includes: Master install kit, axle bearings, and seals

Construction and Durability

The Yukon Dura Grip limited slip unit is engineered for durability and performance. It features a high-strength nodular case, forged 4320 chromoly spider gears, and composite clutches designed for long life and rebuildability. This ensures that you maintain consistent traction across various terrains, whether you're commuting, off-roading, or engaging in spirited driving.

Installation Notes

The ZGK2029 kit includes everything you need for a complete installation. It is essential to follow the manufacturer's guidelines for installation to ensure optimal performance and longevity. The kit is designed to fit the rear differential, making it a straightforward upgrade for compatible vehicles.

Vehicle Fitment

The USA Standard Gear ZGK2029 is confirmed to fit the following GM models:

• Cadillac Escalade (2009-2013)
• Chevrolet Avalanche (2009-2013)
• Chevrolet Colorado (2009-2012)
• Chevrolet Express (2009-2014)
• Chevrolet Silverado 1500 (2009-2017)
• Chevrolet Suburban (2009-2013)
• Chevrolet Tahoe (2009-2017)
• Chevrolet TrailBlazer (2009)
• GMC Canyon (2009-2012)
• GMC Envoy (2009)
• GMC Savana (2009-2013)
• GMC Sierra (2009-2017)
• GMC Yukon (2009-2013)
• GMC Yukon XL (2009-2013)
• Hummer H3 (2009-2010)
• Hummer H3T (2009-2010)
• Saab 9-7x (2009)

The ZGK2029 provides a reliable and efficient solution for those looking to upgrade their differential setup, offering improved traction and performance for a variety of driving conditions.