The Yukon 11.5" AAM 4.11 rear ring-and-pinion master kit is supplied for GM and Chrysler/Dodge/Ram AAM 11.5" applications and includes a matched 4.11 ratio gear set with a full install package. The kit contains a 4.125" OD inner pinion bearing and race, bearings, seals and the necessary small parts to complete a reliable rebuild of the 11.5" axle assembly.
Yukon Gear 11.5in AAM 4.11 Rear Ring & Pinion Install Kit 4.125in OD Pinion Bearing