RCV Ultimate CV Front Axle Set for Jeep JK Dana 30 w/ 30-Spline ARB Air Locker

Key Features:

• Heavy-duty CV axle set designed for Jeep JK Dana 30 front axles with 30-spline ARB Air Lockers.
• Up to twice the strength of OEM axle shafts based on RCV's stated design performance.
• Constant velocity joints maintain consistent torque transfer at increased steering angles.
• Eliminates conventional front axle U-joints and associated binding.
• 30-spline inner shafts and 32-spline outer stubs.
• Sealed, bootless CV joint design for demanding off-road conditions.
• Includes both front axle shafts, seals, installation hardware, and grease.
• Standard black oxide finish with optional nickel plating available by request.

Designed specifically for Jeep Wrangler JK Dana 30 front axle assemblies upgraded with a compatible 30-spline ARB Air Locker.

Required Axle Configuration:

• Jeep JK Dana 30 front axle housing.
• Compatible 30-spline ARB Air Locker differential.
• 30-spline inner axle shaft configuration.
• 32-spline outer stub configuration.
• Compatible factory-style unit bearing arrangement.

Known Incompatibilities:

• Not compatible with factory 27-spline Dana 30 differential carriers.
• Not designed for Jeep JK Dana 44 front axle assemblies.
• Not a direct replacement for factory Dana 30 axle shafts without the required differential upgrade.
• Not intended for applications with incompatible axle housing widths, differential configurations, or wheel-end components.

Important Fitment Notes:

• Confirm the front axle is a Dana 30 rather than a Dana 44 before ordering.
• Verify the installed ARB Air Locker uses 30-spline inner axle shafts.
• Confirm axle shaft lengths and outer stub compatibility, especially on modified or axle-swapped vehicles.
• The supplied warranty information states that use with tires larger than 35" voids the warranty.
• Optional nickel plating may be available; contact us before ordering if a plated finish is required.

Builder Note: Upgrading a Jeep JK Dana 30 to a 30-spline ARB Air Locker increases traction and changes the required inner axle shaft configuration. These RCV shafts are designed to match that upgrade while replacing the factory U-joint design with heavy-duty CV joints. Confirm the locker, spline count, axle lengths, and unit bearings as a complete system before installation.

What Jeep models does this RCV Ultimate CV axle set fit?

This axle set is designed for 2007–2018 Jeep Wrangler JK and Wrangler Unlimited JKU models equipped with a Dana 30 front axle upgraded to a compatible 30-spline ARB Air Locker. It is not designed for Dana 44 front axles.

Will these RCV axle shafts work with my factory Dana 30 differential?

No. The factory Jeep JK Dana 30 typically uses 27-spline inner axle shafts. This RCV set uses 30-spline inner shafts and requires a compatible 30-spline ARB Air Locker.

What is the advantage of RCV CV axle shafts over factory U-joint shafts?

RCV Ultimate CV axle shafts replace conventional U-joints with heavy-duty constant velocity joints. This design helps maintain smooth torque delivery through the steering range and reduces the binding and strength limitations associated with conventional U-joints at increased steering angles.

Are RCV Ultimate CV axle shafts stronger than factory Jeep JK shafts?

RCV designs its Ultimate CV axle shafts to provide up to twice the strength of OEM shafts. The CV joint design also helps maintain strength at increased steering angles where conventional U-joint assemblies can become more vulnerable to failure.

What spline counts are used in this axle set?

The RCV axle set uses 30-spline inner axle shafts designed for a compatible ARB Air Locker and 32-spline outer stub shafts for the specified Jeep JK Dana 30 wheel-end configuration.

Does this kit include both front axle shafts?

Yes. The kit includes left and right RCV Ultimate CV axle shafts, 32-spline outer stub assemblies, SST seals, installation hardware, synthetic moly grease, and installation instructions.

Will this axle set fit a Jeep JK Rubicon Dana 44?

No. This kit is designed specifically for the Jeep JK Dana 30 front axle with a 30-spline ARB Air Locker. Dana 44 front axles require a different axle shaft configuration.

What is the advantage of the RCV bootless CV joint design?

The sealed, bootless CV design eliminates the conventional external rubber CV boot found on many other constant velocity axle assemblies. This reduces exposure to boot damage from rocks, branches, and debris while maintaining a compact joint design for off-road applications.

Can I run these RCV axle shafts with tires larger than 35"?

The supplied product information states that the warranty is void when used with tires larger than 35". Confirm the current warranty terms directly with RCV Performance before selecting this axle set for oversized tire applications.

Does this axle set include the ARB Air Locker?

No. The 30-spline ARB Air Locker is a required differential component and is sold separately. This listing includes the RCV front axle shaft set and associated installation components.

Are these RCV axle shafts suitable for daily driving?

Yes. The constant velocity joint design provides smooth torque transfer during steering, making the axle set suitable for compatible Jeep JK builds used on the street and off-road. Proper installation and maintenance are essential for reliable operation.

Is nickel plating available for these axle shafts?

The standard axle set includes a black oxide finish. Optional nickel plating may be available by special request. Contact us to confirm availability and pricing before ordering.