Yukon Ring & Pinion sets give you the confidence of knowing youﾒre running gears designed for the harshest of conditions. Whether itﾒ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. (Not for street use).