20 Spline Yoke Fits: XMR 1000, Maverick and ’14 and newer Commander style rear differentials. You will need a replacement ring if you are using it on the differential side of the shaft. These yokes are made to very tight tolerances, if you are not careful when installing them you can damage the yoke or pinion shaft. We recommend that you take your time and clean the pinion before installing. — Great for custom applications — Uses factory U-joint size (398 at auto parts store)