Yukon Gear & Axle ZG F10.5-411-31 USA Standard Ring & Pinion Gear Set Ford 10.5in 4.11 Ratio 31-Spline

The Yukon Gear & Axle ZG F10.5-411-31 is a USA Standard ring and pinion gear set designed for the Ford 10.5-inch differential in a 4.11 gear ratio with a 31-spline pinion. This set is engineered for 2010 and earlier Ford applications equipped with the 10.5-inch axle, making it an ideal choice for OEM replacement or a ratio change on heavy-duty Ford trucks and vans.

USA Standard ring and pinion sets are built to exceed OEM specifications, delivering a quality, quiet-running gear set backed by rigorous in-house quality evaluation. Every set undergoes dimensional, material, and fitment testing before leaving the factory, ensuring reliable performance and precise installation.

Key Features:

• 4.11 gear ratio — ideal for re-gearing after larger tire upgrades or restoring optimal drivetrain performance
• 31-spline pinion for a secure, heavy-duty drivetrain connection
• Designed for the Ford 10.5-inch differential (2010 and earlier applications)
• Engineered to exceed OEM specifications for dimensional accuracy and material quality
• Rigorous in-house quality testing covering dimensional, material, and fitment standards
• Includes 12 ring gear bolts
• Standard one-year warranty against manufacturing defects
• Sold as a complete ring and pinion set

For a complete differential rebuild, pair this gear set with a compatible Yukon or USA Standard installation kit, which includes bearings, races, pinion nut, crush sleeve, and seals. The 4.11 ratio is a popular choice for trucks running larger tires, helping restore proper engine RPM range, reduce drivetrain stress, and maintain towing capability.