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The Yukon 4340 chromoly axle kit is a replacement front axle assembly for Jeep TJ Rubicon fronts, built from heavy-duty 4340 chromoly with cold-rolled splines and advanced heat treating. The kit includes inner and outer axles with 1310 series u-joints—two 27‑spline 6.11" outer axles, plus 30‑spline 31.84" RH and 30‑spline 16.96" LH inner axles—intended for Dana 44 applications on TJ Rubicon fronts.
Yukon Gear Front 4340 Chrome-Moly Replacement Axle Kit For Jeep TJ Rubicon Front
