RCV Dana 44 Axle 300M CV Set for Jeep Wrangler JL & JT Rubicon
SKU: CVJ44-JL-300M
The RCV Ultimate Dana 44 300M CV Axle Set is the strongest front axle upgrade available for the Jeep Wrangler JL Rubicon and Gladiator JT Rubicon. Built with 300M inner axle shafts and RCV’s oversized Dana 60–architecture CV joints, this 1-piece FAD-eliminator design delivers unmatched strength, steering smoothness, and durability under extreme load.
These axles eliminate U-joint binding and the oscillation/crow-hop common with OEM shafts. With six fully engaged contact points at every steering angle up to 45°, you get 100% power transfer even at full lock.
The 1-piece design eliminates the Jeep’s factory Front Axle Disconnect coupler, but retains full electronic module functionality—meaning no warning lights and no tuning or modification required.
Built to withstand serious abuse and backed by RCV’s Lifetime No Questions Asked Warranty up to a 43 tire.
Includes:
- Right & left Ultimate 300M CV axle assemblies
- Outer stubs
- SST seals & installation tool
- Synthetic moly grease
- Installation hardware
- Install instructions
Specifications
- Axle Model: Dana 44
- Unit Bearing: Yes
- OEM Inner Spline: 32
- OEM Outer Spline: 32
- RCV Inner Spline: 32
- RCV Outer Spline: 32
- Left Inner Axle Length: 21.27
- Right Inner Axle Length: 34.58
- Outer Stub Length: 6.25
- Material: 300M inner shafts
- Boot Technology: RCV bootless, sealed-joint design
- Warranty: Limited Lifetime (No Questions Asked)
- Warranty Note: Warranty void over 43 tires
Fitment
- Jeep Wrangler JL Rubicon (2018+)
- 2.0L / 3.6L / EcoDiesel
- Jeep Gladiator JT Rubicon (2020+)
- 3.6L / 3.0 EcoDiesel
Notes:
- 1-piece design eliminates factory FAD coupler
- FAD module remains functional—no dash lights
- Fits all Rubicon models with OEM Dana 44 front axle
Tech Insight
This 300M version is the hardest-hitting JL/JT front axle RCV makes, engineered for high horsepower, large tires, and aggressive trail or competition environments.
Why it’s stronger than OEM—and even stronger than standard RCV Dana 44 CVs:
- 18% larger Dana 60–inspired CV joint
- 300M inner shafts provide the highest fatigue resistance in the industry
- Maintains full strength at every steering angle, unlike U-joint axles that weaken past 20–30°
- Gun-drilled outboards with external grease fitting = easy servicing without pulling the axle
- 1-piece shaft removes a major factory weak point (FAD coupler)
- Saves weight and keeps ground clearance compared to a Dana 60 swap
- Backed by a true Lifetime No-Questions-Asked warranty up to 43 tires
If you wheel hard enough to break factory Rubicon shafts, this is the upgrade that stops the problem for good.