Yukon’s 10.5" GM 14‑bolt ring-and-pinion kit (4.88 ratio) is a single part number solution for re‑gearing, supplying the 4.88 ring and pinion, Timken bearings and a complete Master Install kit. Built to fit 14‑bolt rear cover and 12‑bolt ring gear carriers, the 10.5" ring diameter and included small parts simplify rebuilds, while Yukon’s Y.E.S. Plan provides lifetime protection for the gear set.
Yukon Gear 10.5in GM 14 Bolt 4.88 Rear Ring & Pinion Install Kit 30 Spline Positraction