The Yukon 11.5" AAM 4.56 rear ring-and-pinion master kit for GM and Chrysler/Dodge/Ram includes a matched 4.56 ratio gear set, 30-spline Yukon Dura Grip limited-slip posi and the full install package with a 4.375" OD inner pinion bearing and race. The kit bundles bearings, seals and small parts to simplify rebuilding the 11.5" axle assembly.
Yukon Gear 11.5in AAM 4.56 Rear Ring & Pinion Install Kit Positraction 4.375in OD Pinion Bearing