ZG GM8.25-411R by USA Standard Gear

The ZG GM8.25-411R ring and pinion gear set from USA Standard Gear is engineered to enhance the performance and reliability of your GM 8.25-inch IFS. This gear set is designed specifically for those looking to upgrade their differential gearing without compromise.

Specifications

• Ring Gear Diameter: 8.25 inches
• Pinion Spline Count: 30
• Ring Gear Bolts: 10
• Gear Ratio: 4.11

Compatibility

This gear set is compatible with a range of GM models from 2013 and earlier, including:

• Cadillac Escalade (1999-2000 & 2002-2020)
• Chevrolet Avalanche (2007-2013)
• Chevrolet Avalanche 1500 (2002-2006)
• Chevrolet Avalanche 2500 (2002-2006)
• Chevrolet Blazer (1992-1994)
• Chevrolet C/K 1500 (1988-1999)
• Chevrolet C/K 2500 (1988-1995)
• Chevrolet Silverado 1500 (1999-2017)
• Chevrolet Suburban (1992-2020)
• Chevrolet Tahoe (1995-2020)
• GMC C/K 1500 (1988-1999)
• GMC C/K 2500 (1988-1995)
• GMC Sierra (1999-2017)
• GMC Yukon (1992-2015)
• GMC Yukon XL (2000-2014)

Installation Notes

For 2010 GM 8.25 IFS front ends equipped with factory 3.08 gears, a new carrier is required when changing to this 4.11 ratio. Additionally, when upgrading from a factory 3.08 application to a 3.42 or higher gear ratio, it is necessary to purchase the YC G26018131 case. Note the following deck heights for reference:

• Deck Height with 3.08 Ratio: 1.780 inches
• Deck Height with 3.42 and up Ratio: 1.920 inches

Warranty

This product comes with a one-year warranty against manufacturer defects, ensuring peace of mind during your installation process.