|West Coast Differentials stocks a complete line of Sierra Gear Chromoly axle shafts for the Jeep Wrangler JK. Sierra Gear Chromoly axle shafts have a 10 year warranty, are built for high performance use and are far more durable than stock axle shafts. These axle shafts are available for all Dana 30 and Dana 44, Rubicon and non-Rubicon models, including a 35 spline Dana 44 upgrade axle kit that can be installed with various locking differentials. Front axles use the stronger JK 1350 U joint, unlike some axle kits that use a 1310 U joint. View our catalog or Contact our sales department for more information.