Ford, Lincoln, Mazda, Mercury... Differential Ring and Pinion Kit - Rear - USA Standard Gear - ZGK2221

Gear & Install Kit
ZGK2221
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11-80FRD/LIN/MER/MAZ
8.8" Ford 3.31 Rear Ring & Pinion, Install Kit, 28spl Posi, 2.25" Axle Bearing
8.8 FORD 3.31 REAR R&P GEAR/ INSTALL KIT PACKAGE with 28spl POSI & AK 1563 AXLE BRGS (2.25" OD)
USA Standard 8.8" Ford, 3.31 Ratio Rear Ring & Pinion Gear Set and Master Install Kit Package, with 28 Spline Yukon Dura Grip Limited Slip Positraction, and 2.25" OD Axle Bearing & Seals
USA Standard Gear Re-gear & Traction Kits are an easy way to dramatical increase performance of a differential in one simple part number. The kits package a ring and pinion set, an installation kit, and a Yukon Dura Grip limited slip positraction unit. Yukon Dura Grips provide smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. USA Standard Gear employs rigorous in-house quality testing and inspections to ensure its gears pass dimensional, material, and fitment testing. Available in a wide variety of OEM and aftermarket ratios, USA Standard Gear ring and pinion sets are ready to withstand the rigors of everyday commuting, trail running, and all types of spirited driving. This kit is a great way to increase traction by upgrading to a more aggressive gear ratio and adding an LSD in one fell swoop.
This particular kit contains a 3.31 Ring & Pinion Gear Set
For Applications with 10 Bolt Rear Cover and 10 Bolt Ring Gear
Inner Pinion Bearing has a 3.250" Outside Diameter
Quick Kits feature USA Standard ring and pinion gear set, Master Install kit with high quality Koyo bearings and the necessary small parts required to get vehicles off the lift and back on the road quickly.
Quick Kits provide a one-stop shopping experience that allows you to easily find the correct parts for common differential repairs at an affordable price.
The Gear and Install Kit Includes Axle Bearings & Seals
The Gear and Install Kit Includes Yukon Dura Grip Clutch Style Limited Slip (LSD); All Positraction units are fully rebuildable.
The Ring Gear Diameter is 8.8"
USA Standard Quick Kits provide four convenient differential repair packages to save time and money by including everything you need in one simple part number.
8.8" Ford 3.31 Rear Ring & Pinion, Install Kit, 28spl Posi, 2.25" Axle Bearings