Yukon Gear & Axle YGK2229 GM 8.875" 12-Bolt 4.11 Ratio Ring & Pinion Kit with Dura Grip Positraction

The Yukon Gear & Axle YGK2229 is a comprehensive rear differential re-gear package for the GM 8.875" 12-bolt truck axle. This all-in-one kit bundles a 4.11 ratio ring and pinion gear set, a Master Install Kit, a Yukon Dura Grip 26-spline limited slip positraction unit, and the necessary axle bearings and seals — everything required to complete a full differential rebuild in a single part number.

Kit Includes:

• 4.11 Ratio Ring & Pinion Gear Set — 8.875" ring gear diameter, 12-bolt ring gear and rear cover application
• Master Install Kit — features premium Timken bearings and all required small parts for a complete differential overhaul
• Yukon Dura Grip Limited Slip Positraction — 26-spline, fits carrier cases designed for 3.73 and up gear ratios; 4-spring clutch-style design
• Axle Bearings & Seals — 2.25" OD, included for a complete axle-end service

Ring & Pinion Specifications:

• Ring Gear Diameter: 8.875"
• Gear Ratio: 4.11
• Application: GM 12-Bolt Truck with 12-bolt rear cover and 12-bolt ring gear
• Carrier Break: Fits cases designed for 3.73 and up ratio

Dura Grip Positraction Features:

• 26-spline axle interface
• 4-spring, clutch-style limited slip design delivers smooth yet aggressive traction
• Internal gears manufactured from forged 4320 steel for superior tooth strength
• Fully rebuildable construction
• Assembled in the USA

About Yukon Pro Kits:

Yukon Pro Kits are engineered to simplify the re-gear process by combining premium components into one convenient package. Yukon engineers use state-of-the-art design, advanced heat-treating techniques, and leading-edge quality testing to ensure every gear set meets exacting specifications. All Yukon gear sets are eligible for the Yukon Extended Service (Y.E.S.) Plan — a comprehensive, no-questions-asked lifetime replacement warranty valid for as long as you own your vehicle.