Yukon Dana 60/70/80 Chromoly Full Float Axle Shaft - 35-Spline, Cut-to-Fit 34–36.5"
YA WFF35-36.5
The Yukon Dana 60/70/80 35-Spline 4340 Chromoly Full Float Rear Axle Shaft is built for heavy-duty axle assemblies that need strength beyond a standard factory replacement shaft. Manufactured from high-strength 4340 chromoly steel, this axle shaft is designed to handle the torque and shock loads created by oversized tires, locking differentials, high-horsepower engines, and aggressive off-road use. Its cut-to-fit design makes it a practical choice for custom Dana 60, Dana 70, and Dana 80 rear axle builds, narrowed housings, and fabricated axles where factory shaft lengths won't work.
Heat-treated for strength and fatigue resistance, this 35-spline Yukon axle shaft provides the flexibility to build around a custom axle width without sacrificing the full-float wheel-end design. The 34"–36.5" cut-to-fit length range allows builders to establish the finished shaft length based on the housing, differential, and hub configuration. Whether you're putting together a rock crawler, trail buggy, mud truck, or heavy-duty tow rig, the key is matching the shaft length, spline engagement, and axle flange pattern to the complete axle assembly before installation.
Includes:
- (1) Yukon Dana 60/70/80 4340 Chromoly Full Float Rear Axle Shaft
- 35-Spline Cut-to-Fit Configuration
- 34"–36.5" Length Range
Important: Sold individually. This axle shaft requires measurement and may require cutting to the correct finished length. Verify the differential spline count, axle flange bolt pattern, housing width, and wheel-end configuration before ordering. It is not a universal direct-fit replacement for every factory Dana 60, 70, or 80 axle.
Specifications
| Manufacturer | Yukon Gear & Axle |
|---|---|
| Part Number | YA WFF35-36.5 |
| Product Type | Full Float Rear Axle Shaft |
| Axle Platform | Dana Spicer 60 / 70 / 80 |
| Axle Shaft Material | 4340 Chromoly Steel |
| Axle Spline Count | 35-Spline |
| Axle Shaft Length | 34"–36.5" Cut-to-Fit |
| Axle Shaft Design | Full Float / Custom Length |
| Heat Treatment | Heat-Treated Chromoly Steel |
| Axle Flange Bolt Pattern | 8 x 3.96" |
| Differential Compatibility | Compatible 35-Spline Dana 60 / 70 / 80 Differentials |
| Axle Position | Rear |
| Installation Type | Cut-to-Fit / Axle Assembly Required |
| Primary Application | Custom Dana Full Float Axles, Rock Crawlers, Trail Buggies & Heavy-Duty Off-Road Builds |
| Quantity | Sold Individually |
Fitment
Designed for compatible Dana 60, Dana 70, and Dana 80 full-float rear axle assemblies using 35-spline differentials. The vehicle applications below are reference platforms only. Final compatibility depends on the axle housing, differential, required shaft length, and wheel-end flange configuration.
| Make | Model | Year Range | Axle Application |
|---|---|---|---|
| Dodge | Ram 2500 / 3500 4x4 | 1975–Current | Dana 60 / 70 / 80 Rear, Verify Axle |
| Ford | F-250 / F-350 4x4 | 1978–Current | Dana 60 / 70 / 80 Rear, Verify Axle |
| Chevrolet | K30 / V30 1-Ton 4x4 | 1977–1991 | Dana 60 Rear, Verify Axle |
| GMC | K3500 / V3500 1-Ton 4x4 | 1977–1991 | Dana 60 Rear, Verify Axle |
| Custom Fabrication | Tube Chassis / Off-Road Builds | Universal | Compatible Dana 60 / 70 / 80 Full Float Rear |
Fitment Notes:
- Designed for compatible Dana 60, Dana 70, and Dana 80 full-float rear axle applications
- Requires a matching 35-spline differential, locker, or spool
- Cut-to-fit design supports finished shaft requirements within the specified 34"–36.5" range
- Verify required axle shaft length before cutting
- Confirm 8 x 3.96" axle flange bolt pattern
- Verify housing width, differential position, spline engagement, and wheel-end configuration
- Not intended for 30-spline, 37-spline, or 40-spline differential configurations
- Factory axle applications may use different shaft lengths, flange patterns, or spline configurations
- Professional measurement and machining are recommended
Builder Note: For narrowed housings or fabricated rear axle builds, establish the final axle shaft length after the differential, housing, and wheel ends have been assembled. The correct shaft length must provide proper spline engagement without bottoming out inside the differential.
FAQ
What is the advantage of a 4340 chromoly axle shaft?
4340 chromoly steel is a high-strength alloy commonly used in performance drivetrain components because of its toughness and resistance to fatigue. Compared with many factory-style axle shafts, a properly manufactured 4340 shaft is better suited for the shock loads created by large tires, locking differentials, and high-torque off-road applications.
What does cut-to-fit mean?
This axle shaft is designed to be shortened to the finished length required by the axle assembly. The 34"–36.5" length range gives builders flexibility when working with narrowed housings, custom axle widths, and fabricated rear axles. The final length must be measured and verified before cutting.
Will this axle shaft fit a factory Dana 60, Dana 70, or Dana 80 rear axle?
It may fit compatible factory-style Dana full-float rear axle configurations, but fitment depends on the required shaft length, 35-spline differential, flange bolt pattern, and wheel-end design. It should not be treated as a universal direct-fit replacement for every Dana 60, 70, or 80 axle.
What is the difference between a full-float and semi-float axle shaft?
In a full-float axle, the wheel hub and spindle support the vehicle's weight while the axle shaft primarily transfers torque from the differential to the wheel hub. A semi-float axle shaft also helps support vehicle weight and wheel loads. Full-float designs are commonly used in heavy-duty trucks and high-load off-road axle assemblies.
Can I use this axle shaft with a locker or spool?
Yes, provided the locker or spool is designed for compatible 35-spline axle shafts and the complete axle assembly matches the shaft dimensions. Verify spline engagement, flange pattern, and wheel-end compatibility before installation.
Does this shaft work with a 40-spline differential?
No. This is a 35-spline axle shaft and is not compatible with 40-spline differential side gears or spools. The axle shaft spline count must match the differential configuration.
Is this axle shaft sold individually or as a pair?
This listing includes one axle shaft. Two shafts are required for a complete rear axle assembly, and each side may require a different finished length depending on the housing configuration.
What measurements should I verify before ordering?
Confirm the required finished shaft length, differential spline count, flange bolt pattern, axle housing width, and wheel-end configuration. For custom axle builds, final measurements should be taken from the assembled housing and differential rather than relying on factory vehicle specifications.