Jeep TJ Rubicon Axle Kit - Front - Yukon Gear & Axle - 4340 Chromoly - `03-`06

Jeep TJ Rubicon Axle Kit - Front - Yukon Gear & Axle - 4340 Chromoly - `03-`06 is a direct-fit front axle kit engineered for TJ Rubicon owners. This kit replaces the Dana 44 front axles with heavy-duty 4340 chromoly components built for higher loads and larger tires.

Designed for off-road use and high-performance applications, the Yukon 4340 chromoly axles deliver improved durability over stock shafts without changing the vehicle’s geometry. Manufactured with high-tensile 4340 steel, cold roll formed splines and advanced induction/heat treating, these axles are intended to stand up to increased torque and larger tire sizes while maintaining long service life. The kit includes inner and outer shafts for both left and right sides and comes with 1310-series universal joints for reliable driveline connection. A Limited Lifetime warranty covers manufacturing defects and axle breakage for the life of the vehicle owner, with a "No Questions Asked" replacement for the first warranty return; Yukon (through Randy's Ring & Pinion) makes final determination on warranty claims.

Features

• High-tensile 4340 chromoly construction for increased strength (up to 50% over stock in Yukon specifications)
• Cold roll formed splines and advanced heat treating for durability
• Fits Jeep TJ Rubicon front Dana 44 applications (2003–2006)
• Includes inner & outer axle shafts for both sides plus 1310 U-joints
• Includes two 27-spline 6.11" outer axles; 30-spline RH inner 31.84" and LH inner 16.96"

If you have questions or need help confirming fitment, call us directly — we’re happy to assist. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. Call: 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering purchasing multiple items, contact us for possible shipping discounts. We install on premises at both locations.