Motive Gear MGK-221, Differential Ring & Pinion Bearing Rebuild Kit For GM 8.25 IFS/GM 8.625, Ratio 4.56, 10-Bolt, 30 Spline, 9 Pinion & 41 Ring Tooth - Fits Cadillac/Chevrolet/GMC 1500 Series

Motive Gear MGK-221 Ring & Pinion – 4.56 Gear RatioBoost the torque and performance of your GM 1500 series vehicle with the Motive Gear MGK-221 differential ring and pinion set. Designed for both GM 8.25" IFS front and GM 8.625" rear axles, this 4.56 gear ratio package includes premium Timken bearing kits for complete installation.Key FeaturesGear Ratio: 4.56Pinion Gear Tooth Count: 9Pinion Shaft Diameter: 1.626"Pinion Spline Count: 30Ring Gear Tooth Count: 41Ring Gear Outside Diameter: 8.25" Front, 8.5" RearRing Gear Rotation: Reverse (Front), Standard (Rear)Ring Gear Material: 8620 SteelApplication & CompatibilityCompatible with the following vehicles:Cadillac Escalade (2002–2008)Cadillac Escalade ESV (2003–2008)Cadillac Escalade EXT (2002–2008)Chevrolet Avalanche (2002–2008)Chevrolet Avalanche 1500 (2002–2006)Chevrolet Silverado 1500 (1999–2008)Chevrolet Silverado 1500 Classic (2007)Chevrolet Silverado 1500 HD (2001–2002)Chevrolet Suburban 1500 (2000–2008)Chevrolet Tahoe (2000–2008)GMC Sierra 1500 (1999–2008)GMC Yukon (2000–2008)GMC Yukon XL 1500 (2000–2008)Replaces OEM & Aftermarket Part NumbersRevolution Gear & Axle: REV-CHEVY-1500-

• Fits GM 8.25" IFS Front and GM 8.625" Rear axles; gear ratio: 4.56; includes both front and rear ring & pinion sets plus Timken bearing kits for a complete upgrade.
• Rear specs: 10-bolt cover, 41 ring teeth, 9 pinion teeth, 1.626" pinion shaft diameter, 30 spline count; uses standard rotation.
• Front specs: 10-bolt cover, 41 ring teeth, 9 pinion teeth, 1.626" pinion shaft diameter, 30 spline count; reverse rotation setup.
• Requires a 3.42 & up carrier for front and 2.73 & up carrier for rear; forged from 8620 steel for long-term strength and performance.
• Backed by Motive Gear’s 1-year/50,000-mile warranty; replaces Revolution Gear & Axle REV-CHEVY-1500-8.6-456.