High performance Yukon replacement Ring & Pinion gear set for Dana 80 in a 3.73 ratio, thin. Yukon Ring & 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 & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty. This is a thin gear for a 4.10 & up carrier.