Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring and pinion sets deliver unrivaled performance and quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up.Fits Dana Spicer 44 JK rear8.89″ ring gear diameter24 spline pinion10 ring gear bolts5.13 ratioFits:Jeep Wrangler JK 2 Door Rubicon (2007-2018)Jeep Wrangler JK 4 Door Unlimited Rubicon (2007-2018)