For JK Rubicon owners who demand the absolute strongest Dana 44 axle option available, the RCV 300M Ultimate Dana 44 CV Axle Set is the top tier. Built from premium 300M alloy, these shafts offer extreme torsional strength and are engineered to survive the harshest wheeling, biggest tires, and highest horsepower JK builds.

The RCV CV joint design eliminates U-joint binding and maintains full strength at extreme steering angles, delivering smoother power transfer, improved traction, and unbeatable reliability. Whether you're rock crawling, running high speed desert terrain, or pushing 40" tires, these 300M axles keep you moving.

Includes:

• Left & right 300M Ultimate Dana 44 CV axle shafts
• SST seals & installation tool
• Synthetic moly grease
• Installation hardware
• Installation instructions
• Black oxide coating (standard)
• Optional nickel plating available (contact us)

Specifications

• Axle Model: Dana 44
• Material: 300M high-strength alloy
• Unit Bearing: Yes
• OEM Inner Spline: 30
• OEM Outer Spline: 32
• RCV Inner Spline: 30
• RCV Outer Spline: 32
• OEM Left Inner Axle Length: 19.76
• OEM Right Inner Axle Length: 33.44
• OEM Outer Stub Axle Length: 6.25
• Boot Technology: RCV bootless, sealed joint design
• Warranty: Limited Lifetime (No Questions Asked)
• Warranty Note: Warranty is void over 40" tires

Fitment

• For Jeep JK Rubicon models equipped with a Dana 44 front axle:
• Jeep Wrangler JK Rubicon 20072018
• Jeep Wrangler Unlimited JK Rubicon 20072018
• Compatible with Ultimate Dana 44 replacement housings using 30 spline ARB lockers
• Not for Dana 30 models

Tech Insight

300M alloy transforms an already strong RCV axle into a professional-grade component capable of handling extreme shock loads and brutal terrain. Compared to traditional chromoly, 300M delivers substantially higher tensile and fatigue strength, making it a favorite among competition-level builds and hardcore off-roaders.

Combined with RCVs CV jointwhich stays equally strong at all steering anglesthis setup virtually eliminates the common failure points of OEM Rubicon U-joint shafts.

For drivers pushing the limits of a Dana 44 front end, this is the ultimate upgrade.