RCV Ultimate CV Front Axle Set for Dana 44 Jeep JK Rubicon ('07-'18)

Key Features:

• Heavy-duty CV axle set for Jeep JK Rubicon Dana 44 front axles.
• Engineered for up to twice the strength of factory axle shafts.
• 30-spline inner shafts and 32-spline outer stub configuration.
• Constant velocity joints maintain consistent torque transfer through increased steering angles.
• Eliminates conventional U-joint binding and associated strength limitations.
• Sealed, bootless CV joint design for demanding off-road conditions.
• Includes left and right axle assemblies, SST seals, hardware, and grease.
• Compatible with specified Dana Spicer Ultimate Dana 44 housings using a 30-spline ARB Air Locker.

Designed for Jeep Wrangler JK and Wrangler Unlimited JKU Rubicon models equipped with the factory Dana 44 front axle. Also compatible with specified Dana Spicer Ultimate Dana 44 replacement housings using a 30-spline ARB Air Locker.

Required Axle Configuration:

• Jeep JK Rubicon Dana 44 front axle housing or compatible Dana Spicer Ultimate Dana 44 replacement housing.
• 30-spline inner axle shaft configuration.
• 32-spline outer stub configuration.
• Compatible factory-style unit bearing assembly.
• Matching differential and wheel-end components.

Known Incompatibilities:

• Factory Jeep JK Dana 30 front axles.
• Jeep JL or Gladiator JT Dana 44 front axle applications.
• Axle assemblies with incompatible inner or outer spline counts.
• Modified or axle-swapped housings with different shaft lengths or wheel-end configurations.

Important Fitment Notes:

• Verify the front axle is a Dana 44 rather than a Dana 30 before ordering.
• Confirm 30-spline inner shafts and 32-spline outer stubs.
• Dana Spicer Ultimate Dana 44 replacement housings require the compatible 30-spline ARB Air Locker configuration.
• Check axle shaft lengths and unit bearing compatibility on modified or axle-swapped vehicles.
• The supplied warranty information states that tires larger than 40" void the manufacturer warranty.

Builder Note: The factory Jeep JK Rubicon Dana 44 is a capable front axle, but U-joint shafts can become a limiting factor when running lockers, larger tires, and increased torque. The RCV Ultimate CV design replaces the conventional U-joints with sealed constant velocity joints while retaining the specified 30-spline inner and 32-spline outer configuration. Confirm the axle housing and differential setup 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 Rubicon models equipped with the Dana 44 front axle. It also fits specified Dana Spicer Ultimate Dana 44 replacement housings using a compatible 30-spline ARB Air Locker.

Will these RCV axle shafts fit a Jeep JK Dana 30?

No. This kit is designed for the Jeep JK Rubicon Dana 44 front axle. Dana 30 front axles require a different RCV axle shaft configuration.

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

RCV designs its Ultimate CV axle shafts to deliver up to twice the strength of factory axle shafts. The constant velocity joint design also helps maintain consistent torque transfer at increased steering angles where conventional U-joints can become more vulnerable to binding and failure.

What spline counts are used in this RCV axle set?

The RCV Ultimate CV axle set uses 30-spline inner axle shafts and 32-spline outer stubs, matching the specified Jeep JK Rubicon Dana 44 front axle configuration.

Will these RCV axles work with the factory Rubicon locker?

The supplied specifications identify the factory JK Rubicon Dana 44 configuration as compatible. Verify the installed differential and spline count before ordering, especially on vehicles with aftermarket lockers or replacement housings.

Will this axle set fit a Dana Spicer Ultimate Dana 44 replacement housing?

Yes. The supplied product information identifies compatibility with specified Dana Spicer Ultimate Dana 44 replacement housings equipped with a 30-spline ARB Air Locker. Confirm the housing and differential configuration before ordering.

Does this kit include both front axle shafts?

Yes. The kit includes left and right RCV Ultimate CV axle shaft assemblies, SST seals, installation hardware, synthetic moly grease, and installation instructions.

What is the advantage of RCV CV joints over factory U-joints?

RCV Ultimate CV joints provide constant velocity torque transfer throughout the steering range, reducing the binding and strength limitations associated with conventional U-joint axle shafts at increased steering angles.

What is the RCV bootless CV joint design?

The RCV Ultimate CV uses a sealed constant velocity joint without a conventional external rubber CV boot. This eliminates a component commonly exposed to damage from rocks, branches, and trail debris.

What tire size is covered under the RCV warranty?

The supplied product information identifies a limited lifetime warranty and states that the manufacturer warranty is void when used with tires larger than 40". Confirm current warranty terms directly with RCV Performance before ordering.

Can these RCV axles be used on street-driven Jeep JK Rubicons?

Yes. The constant velocity joint design provides smooth torque transfer during steering, making the axle set suitable for compatible Jeep JK Rubicon builds used on-road and off-road when properly installed and maintained.

Is nickel plating available?

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