Yukon Gear and Axle high performance ring and pinions set the standard for quality. Yukon Engineers use state-of-the art design and testing processes, backed by 2 in-house quality labs to ensure each item manufactured meets exacting specifications and quality standards. Yukon designed gear tooth surface finish reduces both friction and heat for long races and high torque conditions. We use high grade steel in both the ring and pinion, with fitment designed to OEM specs. Go ahead, add loads of horsepower and go big on tires because Yukon offers the widest selection of gear ratios to choose from. You'll know that your gear choice was the right one, because you chose Yukon. Yukon Ring and Pinions come with a 1 year warranty against manufacture defects. Yukon offers a Y.E.S. Plan for a lifetime, comprehensive, no-questions-asked protection plan covering your gears for as long as you own the vehicle.
37 spline 4.88 ratio For 2017+ F350 DRW F450 For DANA M300 The F350 has 37 Spl axles, the F450 has 41spl axles. No 3 series case available for the F450.YGDM300-488