Yukon Dana 44 Steel Spool - 3.92 & Up Gear Ratios, 30-Spline
SKU: YUKYP FSD44-4-30UP
This Yukon 30-Spline steel spool for Dana 44 axles is designed to deliver maximum strength and full-time traction in off-road and performance applications. By replacing the factory differential, it permanently locks both axle shafts together, ensuring equal torque delivery to both wheels in all conditions.
Manufactured from high-quality steel and precision machined for durability, this spool is ideal for trail rigs, rock crawlers, and competition builds. It provides a simple, strong, and reliable solution for drivers who demand consistent traction in extreme terrain.
Includes:
- (1) Yukon 30-Spline Steel Spool for Dana 44 Axles - 3.92 & Up Gear Ratios
Specifications
- Manufacturer: Yukon
- P/N: YP FSD44-4-30UP
- Fits Dana 44 rear axles
- 30 spline axle compatibility
- Designed for 3.92 and up gear ratios
- Provides 100% traction to both wheels
- High-strength steel construction
- Precision machined for durability and fitment
- Designed for off-road and performance use
- Not recommended for street-driven vehicles
Fitment
- Dana 44 Rear Axle
- 30-spline applications
- 3.92 and numerically higher gear ratios only
Tech Insight
A spool replaces the entire differential carrier, eliminating spider gears and permanently locking both axle shafts together. This ensures maximum traction by forcing both wheels to rotate at the same speed, regardless of terrain.
While this design offers unmatched strength and simplicity, it also eliminates differential action during turns. As a result, spools are best suited for dedicated off-road or race vehicles where traction and durability are prioritized over street drivability.