Yukon Chromoly Front Axle Kit, GM 8.5, Both Sides, 19/30 Spline, Super Joints

Yukon Chromoly Front Axle Kit, GM 8.5, Both Sides, 19/30 Spline, Super Joints. Yukon performance axles are built with high-tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced heat treating to create an axle of unmatched quality and durability.. Yukon high-performance axles are built with high-tensile strength 4340 chromoly, use superior production methods that include cold roll formed splines, and feature advanced induction coil heat treating to create an axle of unmatched quality and durability.