The Yukon 11.5" AAM 4.56 rear ring-and-pinion master kit for GM and Chrysler/Dodge/Ram pairs matched 4.56 ratio gears with a complete install package and the 4.375" OD inner pinion bearing and race. Bearings, seals and the necessary small hardware are included to facilitate a proper rebuild of the 11.5" differential carrier without sourcing separate components.
Yukon Gear 11.5in AAM 4.56 Rear Ring & Pinion Install Kit 4.375in OD Pinion Bearing