RCV Ultimate CV Axle Set for Ford F-350 Dana 60 ('85-'88)
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The RCV Ultimate CV Front Axle Set for 1985–1988 Ford F-350 Dana 60 replaces factory U-joint axle shafts with heavy-duty constant velocity axles engineered for greater strength, smoother steering, and dependable off-road performance. Designed for Ford F-350 trucks equipped with a Dana 60 kingpin front axle, this set features 35-spline inner and outer shafts. RCV's Ultimate CV technology is engineered to deliver up to twice the strength of OEM shafts while maintaining consistent torque transfer at extreme steering angles.
Built for restored trucks and heavy-duty off-road rigs running larger tires, V8 power, or locking differentials, the sealed, bootless CV design eliminates conventional U-joint binding. The kit includes SST seals, installation hardware, and synthetic moly grease for a complete axle shaft upgrade. Designed specifically for the 1985–1988 Ford F-350 Dana 60 kingpin front axle, this set is not intended for ball-joint Dana 60 applications.
Includes:
- (1) Left-Hand RCV Ultimate CV Axle Shaft Assembly – 35-Spline
- (1) Right-Hand RCV Ultimate CV Axle Shaft Assembly – 35-Spline
- RCV SST Seals & Installation Tool
- Installation Hardware
- Synthetic Moly Grease
- Installation Instructions
- Standard Black Oxide Finish
Important: Designed for compatible Ford Dana 60 kingpin front axles with 35-spline inner and outer shaft configurations. Verify the installed axle housing, shaft lengths, and wheel-end configuration before ordering. Optional nickel plating may be available by special request.
Warranty Note: The supplied product information states that the manufacturer warranty is void when used with tires larger than 47".
Specifications
| Manufacturer | RCV Performance |
|---|---|
| Product Series | Ultimate CV |
| Product Type | Heavy-Duty Front CV Axle Shaft Set |
| Axle Platform | Dana 60 |
| Vehicle Platform | Ford F-350 |
| Model Years | 1985–1988 |
| Axle Position | Front |
| Knuckle Configuration | Kingpin |
| Unit Bearing | No / Serviceable Spindle & Hub |
| OEM Inner Spline Count | 35-Spline |
| OEM Outer Spline Count | 35-Spline |
| RCV Inner Spline Count | 35-Spline |
| RCV Outer Spline Count | 35-Spline |
| Left Inner Axle Length | 15.96" |
| Right Inner Axle Length | 36.68" |
| Outer Stub Axle Length | 11.375" |
| Joint Type | Heavy-Duty Constant Velocity (CV) |
| CV Joint Design | Sealed / Bootless |
| U-Joint Configuration | Eliminates Conventional Axle U-Joints |
| Strength Rating | Engineered for Up to 2x OEM Axle Shaft Strength |
| Standard Finish | Black Oxide |
| Optional Finish | Nickel Plating / Contact for Availability |
| Lubrication | Synthetic Moly Grease Included |
| Sealing Components | RCV SST Seals Included |
| Installation Type | Front Axle Shaft Replacement |
| Tire Size Warranty Limitation | Manufacturer Warranty Void with Tires Over 47" |
| Primary Application | 1985–1988 Ford F-350 Dana 60 Kingpin Front Axle Upgrades & Heavy-Duty Off-Road Use |
| Quantity | (1) Complete Left & Right Front Axle Set |
Fitment
Designed for Ford F-350 trucks equipped with the specified Dana 60 kingpin front axle and 35-spline inner and outer shaft configuration.
| Make | Model | Year Range | Axle Application |
|---|---|---|---|
| Ford | F-350 | 1985–1988 | Dana 60 Kingpin Front / 35-Spline Inner & Outer |
Required Axle Configuration:
- Ford Dana 60 kingpin front axle housing.
- 35-spline inner axle shaft configuration.
- 35-spline outer stub configuration.
- Non-unit-bearing spindle and hub assembly.
- Compatible differential and locking hub components.
Known Incompatibilities:
- Ball-joint Dana 60 front axles.
- Dana 44 front axle assemblies.
- Axles using incompatible inner or outer spline counts.
- Modified or axle-swapped housings with different shaft lengths or wheel-end configurations.
Important Fitment Notes:
- Verify the installed axle is a kingpin Dana 60 before ordering.
- Confirm the 35-spline inner and outer shaft configuration.
- Check axle shaft lengths against the existing axle assembly.
- Modified vehicles and axle-swapped trucks require additional fitment verification.
- The supplied warranty information states that tires larger than 47" void the manufacturer warranty.
Builder Note: The Ford Dana 60 kingpin axle is a popular platform for heavy-duty off-road builds, but factory U-joint shafts can become a limitation when adding lockers, larger tires, and increased torque. The RCV Ultimate CV design replaces the U-joint assembly with constant velocity joints while retaining the specified 35-spline inner and outer configuration. Confirm the axle housing, spline counts, and wheel-end components before installation.
FAQ
What Ford trucks does this RCV Ultimate CV axle set fit?
This axle set is designed for compatible 1985–1988 Ford F-350 trucks equipped with a Dana 60 kingpin front axle. Verify the installed axle, spline counts, shaft lengths, and wheel-end configuration before ordering.
Will these RCV axles fit a ball-joint Dana 60?
No. This axle set is designed for the specified Ford Dana 60 kingpin front axle configuration. Ball-joint Dana 60 axles require a different axle shaft application.
Are RCV Ultimate CV axle shafts stronger than factory Dana 60 shafts?
RCV designs its Ultimate CV axle shafts to provide up to twice the strength of OEM 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?
This axle set uses 35-spline inner shafts and 35-spline outer stub shafts, matching the specified Ford Dana 60 front axle configuration.
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.
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.
Can I use these RCV axle shafts with locking differentials?
Yes. The axle set is designed for demanding applications where locking differentials increase traction and drivetrain loads. Confirm that the differential uses the required 35-spline inner axle configuration.
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 other trail debris.
What tire size is covered under the RCV warranty?
The supplied product information states that the manufacturer warranty is void when used with tires larger than 47". Confirm current warranty terms directly with RCV Performance before ordering for oversized tire applications.
Can these RCV axles be used on street-driven Ford F-350 trucks?
Yes. The constant velocity design provides smooth torque transfer during steering, making the axle set suitable for compatible trucks 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.