RCV 30-Spline Dana 44 CV Axle Set for Ford Bronco ('71-'77)
SKU: CVJ44OS-BR1
Upgrade your early Bronco’s front Dana 44 with the unmatched strength and smooth articulation of the RCV Ultimate CV Axle Set. These high strength constant velocity axles replace the factory U-joint shafts—eliminating binding, improving steering feel, and delivering twice the strength of OEM axle shafts.
While U-joints lose strength dramatically at full steering lock, RCV CV joints maintain full torque capacity at all angles. The result: smoother power transfer, better traction, and significantly reduced breakage when running big tires, lockers, or high horsepower engines.
IMPORTANT NOTE: CVJ44OS-BR1 requires a 30 spline hub gear upgrade. RCV hub gears are compatible with Warn 20990 Premium Lockouts.
Includes:
- Left & right RCV CV axle shafts
- 30 spline outer stubs
- SST seals & installation tool
- Synthetic moly grease
- Installation hardware
- Installation instructions
- Black oxide coating (standard)
- Optional nickel plating available
Specifications
- Axle Model: Dana 44
- Unit Bearing: No
- OEM Inner Spline: 30
- OEM Outer Spline: 19
- RCV Inner Spline: 30
- RCV Outer Spline: 30 (requires 30 spline hub gear upgrade)
- Left Inner Axle Length: 18.322
- Right Inner Axle Length: 27.942
- Outer Stub Axle Length: 9.72
- Boot Technology: RCV bootless, sealed joint design
- Warranty Note: Warranty is void over 40" tires
Fitment
Designed for the classic Ford Bronco Dana 44 front axle 1971–1977
Requirements:
- Upgrade to 30 spline hub gears
- Warn 20990 Premium Lockouts compatible
- Not compatible with factory 19 spline lockouts unless upgraded.
Tech Insight
The classic Bronco Dana 44 uses a 19 spline outer stub shaft paired with traditional U-joints—both weak points when upgrading power, adding lockers, or running larger tires. RCV eliminates these limits by converting the system to a 30 spline CV based design, significantly increasing the strength of the outer interface while delivering flawless power transfer at any steering angle.
This upgrade brings modern performance and durability to a vintage Bronco platform, making it ideal for enthusiasts who push their rigs harder on- and off-road.