Front Axle Kits, Rear Axle Kits
Rear Axle Shafts by Alloy USA
and Superior

High tensile strength 4340 Chromoly is heat-treated, tempered and induction hardened to produce these heavy-duty axles that are up to 40% stronger than stock 1040 axles. Each axle shaft is backed by Alloy USA’s™ exclusive ten-year warranty! We use the latest splining technology to produce splines that are stronger than traditional cut splines. The shafts are then precision CNC machined and magnaflux inspected for cracks before receiving a slick black anodized finish. Our front axle shaft kits include everything you need to complete the job: both passenger and drive side inner and outer axle shafts, seals, U-joints and clips.To Increase your strength in the Axle, then increase your Spline Count.

Don’t just replace your axle shafts, upgrade them. For less than the cost or an original replacement axle shaft you can upgrade to an Alloy USA™ performance shaft. Each axle is heat-treated, tempered and induction hardened to have twice the tensile strength than stock and is up to 35% stronger. We use the latest splining technology, to produce splines that are stronger than traditional cut splines. To Increase your strength in the Axle, then increase your Spline Count.

Grande 30 spline outer stub upgrade replaces factory 27 spline outer stub axles to 30 spline. To Increase your strength in the Axle, then increase your Spline Count.

High tensile strength 4140 Chromoly is heat-treated, tempered and induction hardened to produce these heavy-duty axles that are up to 35% stronger than stock 1040 axles. Rear axle shaft kits include everything you need for your installation: both passenger and drive side shafts, seals, bearings and wheel studs. Upgraded spline counts for Jeep applications: Dana 35 spline upgrades from 27 splines to 30 splines. Dana 44 spline upgrades from 30 splines to 33 and 35 splines. To Increase your strength in the Axle, then increase your Spline Count.

Don’t just replace your axle shafts, upgrade them. For less than the cost or an original replacement axle shaft you can upgrade to an Alloy USA™ performance shaft. Each axle is heat-treated, tempered and induction hardened to have twice the tensile strength than stock and is up to 35% stronger. We use the latest splining technology, to produce splines that are stronger than traditional cut splines. To Increase your strength in the Axle, then increase your Spline Count.

Serviceable grease Zerk at each cap allows you to flush grime and fill with grease to ensure that your X-joints will last for when you need them. Dependable cold forged steel composition made of chromium, molybdenum and nickel alloy. Hardened case for excellent wear resistance.

Increased Spline Count, Rolled Splines, and Larger Diameter Axle Shafts equal the toughest axles on the market. Available for Jeep Wrangler YJ Model 30 and 35 Axles. Available with the following Locker options:

• Kit with ARB Air Locker
• Kit with Detroit Locker
• Kit for use with Other 30 Spline Locker

Note:   New Lockers with 30 Spline MUST be installed to accomodate these axle upgrades.

Superior Axle Kits are unsurpassed by any other Axle kit on the market, and claim to be the first to develop matching Axle and differential kits. As well as being the first to offer this in a big spline version for our enthusiasts wanting something tougher and stronger than stock. All kits are complete with both left and right Axles, bearings, seals and differentials.