Yukon Gear & Axle YA W24112 Axle ShaftAxle Shaft Axle Shaft; Dana 30 30 Reverse; Replacement 27 Spline 4340 Chrome Moly; w Super Joints; SPECIFICATIONS: Axle Type: Dana 30 WARNING CA Proposition 65: No FEATURES: Fits Dana Spicer 30 in. XJ; YJ and TJ Incl. Inner And Outer 4340 Chromoly Axles And Yukon Super Joints 27 Spline Inner And Outer Yukon high performance axles are built with high tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines,