Yukon Dana 60 35-Spline Steel Spool – 4.56 & Up
YP FSD60-4-35
The Yukon Dana 60 35-Spline Steel Spool replaces the differential carrier with a solid connection between both axle shafts, delivering 100% locked traction for rock crawlers, competition rigs, mud trucks, and other dedicated off-road builds. Designed for Dana 60 axles using 35-spline shafts and 4.56-and-up gear ratios, a spool keeps both wheels turning together regardless of available traction.
With no clutches, gears, or locking mechanism inside the differential, a spool is one of the simplest ways to build a permanently locked Dana 60. The steel construction is built for high-load use, and the design can be used in compatible front or rear Dana 60 applications, including high-pinion and low-pinion configurations. Because both axle shafts remain mechanically locked together at all times, this setup is intended for off-road and competition vehicles rather than street-driven applications.
Includes:
- (1) Yukon Dana 60 35-Spline Steel Spool
Important: Designed for 35-spline Dana 60 axles using 4.56-and-up gear ratios. Not recommended for street use.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yukon Gear & Axle |
| Product Type | Differential Spool |
| Axle Platform | Dana 60 |
| Axle Spline Count | 35-Spline |
| Gear Ratio Compatibility | 4.56 & Up |
| Traction Type | 100% Locked |
| Material | High-Strength Steel |
| Axle Position | Front or Rear |
| Pinion Configuration | High Pinion or Low Pinion |
| Carrier Replacement | Yes |
| C-Clip Compatibility | Not Compatible with C-Clip Axles |
| Primary Application | Off-Road & Competition Dana 60 Builds |
| Street Use | Not Recommended |
Fitment
Designed For:
- Dana 60 axle assemblies
- 35-spline axle shafts
- 4.56-and-up gear ratios
- Compatible front or rear Dana 60 applications
- High-pinion or low-pinion Dana 60 configurations
- GM, Dodge, and Chrysler Dana Spicer 60 applications listed for this spool
Best Suited For:
- Rock crawlers
- Rock bouncers
- Competition off-road vehicles
- Mud trucks
- Dedicated trail rigs
- Custom Dana 60 axle builds
Fitment Notes:
- Verify that the axle is a Dana 60 before ordering
- Requires 35-spline axle shafts
- Designed for 4.56-and-up gear ratios
- Not compatible with C-clip axle applications
- A spool permanently locks both axle shafts together
- Not recommended for vehicles primarily driven on the street
FAQ
What does a Dana 60 spool do?
A spool replaces the differential carrier and mechanically connects both axle shafts so they rotate together at all times. This provides 100% locked traction with no differential action between the left and right wheels.
Why use a spool instead of a locker?
A spool has no internal locking mechanism, clutches, or moving differential parts. For dedicated off-road and competition vehicles, that simplicity provides a strong and predictable way to keep both tires driving under load.
Will this spool work with any Dana 60?
No. This spool is specifically designed for Dana 60 applications using 35-spline axle shafts and 4.56-and-up gear ratios. Always verify axle model, spline count, and gear ratio before ordering.
Can this spool be used in a front Dana 60?
Yes, it can be used in compatible front or rear Dana 60 configurations. A permanently locked front differential significantly changes steering characteristics, so the complete steering and axle setup should be considered before using a spool in a front axle.
Does it work with high-pinion and low-pinion Dana 60 axles?
Yes. The supplied application information lists compatibility with both high-pinion and low-pinion Dana 60 configurations when the remaining axle, spline, and gear-ratio requirements are met.
Is a spool recommended for street use?
No. Because both wheels remain locked together during turns, a spool can cause tire scrub, increased drivetrain loading, and different handling characteristics on pavement. It is best suited to dedicated off-road and competition vehicles.