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 All Yukon ring and pinion sets come standard with a one-year warranty This product is used in a 4.88 axle ratio