Jeep JK Rubicon Axle Shaft - Front - Yukon Gear & Axle - 4340 Chromoly 32 Spline Outer Stub - `07-`18

Jeep JK Rubicon Axle Shaft - Front - Yukon Gear & Axle - 4340 Chromoly 32 Spline Outer Stub - `07-`18 is a direct-fit replacement outer stub axle for front Dana 30/Dana 44 applications on JK Rubicon models. This Yukon 4340 chromoly unit is built for higher strength and long-term service in modified Jeeps running larger tires or increased power.

Manufactured from 4340 chrome-moly steel with cold-rolled splines and induction coil heat treating, this axle shaft delivers improved tensile strength over OE shafts while maintaining correct fitment for the JK Rubicon front axle. The 32-spline outer stub measures approximately 6.3" long and is designed for Dana 30 and Dana 44 differentials. Yukon backs this product with a Limited Lifetime warranty that covers manufacturing defects and axle breakage for as long as you own the vehicle (warranty non-transferable); Yukon handles warranty determinations through their service network.

Features

• 4340 chromoly construction for increased strength and fatigue resistance
• 32 cold-rolled splines for reliable engagement with differential components
• Compatible with Dana 30 and Dana 44 front applications; approx. 6.3" overall length
• Designed as a direct replacement for Jeep JK Rubicon front outer stub (2007–2018)
• Limited Lifetime warranty on manufacturing defects and breakage

This Yukon outer stub is intended for enthusiasts upgrading axles for more demanding use — larger tires, off-road loads, or higher output engines — without changing hub or differential assemblies. Part number references and fitment details should be confirmed against your vehicle build before purchase.

If you have questions or need fitment help, call us directly at 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations offering installation and customization services: Austin, Texas and the Los Angeles, California area. We install on premises at both locations. If you are considering purchasing multiple items, please contact us for possible shipping discounts.