The Yukon 11.5" AAM 4.11 rear ring-and-pinion master kit for GM and Chrysler/Dodge/Ram combines a matched 4.11 ratio gear set with a 30-spline Yukon Dura Grip limited-slip posi and the complete install kit. The package includes the 4.125" OD inner pinion bearing and race, bearings, seals and all small hardware needed to rebuild the 11.5" differential properly.
Yukon Gear 11.5in AAM 4.11 Rear Ring & Pinion Install Kit Positraction 4.125in OD Pinion Bearing