Yukon GM 14-Bolt Steel Spool - 30-Spline, 10.5" Rear Axle
YUKYP FSGM14T-3-30
This Yukon 30-spline steel spool for GM 10.5" 14-Bolt rear axles is built for maximum strength and full-time traction in extreme off-road and competition environments. Replacing the factory differential, it permanently locks both rear wheels together to ensure equal power delivery in the most demanding conditions.
Constructed from high-quality steel and precision machined for a perfect fit, this spool is ideal for rock bouncers, mud trucks, and dedicated trail rigs. It eliminates differential action entirely, providing consistent traction where it matters most.
Includes:
- (1) Yukon 14-Bolt 30 Spline Steel Spool
Specifications
- Fits GM 10.5" 14-Bolt truck axles with 30-spline shafts
- Compatible with both 4.10 & down gears and 4.56 & up thick gears
- Provides 100% traction to both rear wheels at all times
- Precision machined steel construction for maximum strength
- Designed for performance and off-road applications
- Not recommended for street driven vehicles
Fitment
| Make | Model | Year Range |
|---|---|---|
| Chevrolet | Avalanche 2500 | 2002–2006 |
| Chevrolet | C20 Pickup & Suburban | 1973–1986 |
| Chevrolet | C2500 | 1988–2000 |
| Chevrolet | C2500 Suburban | 1992–1999 |
| Chevrolet | C30 Pickup | 1973–1986 |
| Chevrolet | C3500 | 1988–2000 |
| Chevrolet | C3500HD | 1991–2002 |
| Chevrolet | Express 2500 | 1996–2015 |
| Chevrolet | Express 3500 | 1996–2015 |
| Chevrolet | Express 4500 | 2009–2015 |
| Chevrolet | G20 | 1975–1995 |
| Chevrolet | G30 | 1979–1996 |
| Chevrolet | K20 Pickup & Suburban | 1973–1986 |
| Chevrolet | K2500 | 1988–2000 |
| Chevrolet | K2500 Suburban | 1992–1999 |
| Chevrolet | K30 Pickup | 1972–1986 |
| Chevrolet | K3500 | 1988–2000 |
| Chevrolet | P30 | 1997–1999 |
| Chevrolet | R20/R2500 Suburban | 1987–1991 |
| Chevrolet | R30 | 1987–1988 |
| Chevrolet | Silverado 2500 | 1999–2004 |
| Chevrolet | Silverado 2500 HD | 2001–2015 |
| Chevrolet | Silverado 2500 HD Classic | 2007 |
| Chevrolet | Silverado 3500 HD | 2007–2013 |
| Chevrolet | Suburban 2500 | 2000–2013 |
| Chevrolet | V20/V2500 Suburban | 1987–1991 |
| Chevrolet | V30 | 1987–1988 |
| GMC | C25/C2500 Pickup & Suburban | 1973–1978 |
| GMC | C2500 | 1979–2000 |
| GMC | C2500 Suburban | 1979–1999 |
| GMC | C35/C3500 Pickup | 1973–1978 |
| GMC | C3500 | 1979–2000 |
| GMC | C3500HD | 2001–2002 |
| GMC | G1500 | 1981–1987 |
| GMC | G3500 | 1979–1996 |
| GMC | K25/K2500 Pickup & Suburban | 1967–1986 |
| GMC | K2500 | 1979–2000 |
| GMC | K2500 Suburban | 1979–1999 |
| GMC | K35 | 1977–1978 |
| GMC | K3500 | 1979–2000 |
| GMC | P3500 | 1997–1999 |
| GMC | R2500/R2500 Suburban | 1987–1991 |
| GMC | R3500 | 1987 |
| GMC | Savana 2500 | 1996–2015 |
| GMC | Savana 3500 | 1996–2015 |
| GMC | Savana 4500 | 2009–2015 |
| GMC | Sierra 2500 | 1999–2004 |
| GMC | Sierra 2500 HD | 2001–2015 |
| GMC | Sierra 2500 HD Classic | 2007 |
| GMC | V2500/V2500 Suburban | 1987–1991 |
| GMC | V3500 | 1987 |
| GMC | Yukon XL | 2015 |
| GMC | Yukon XL 2500 | 2000–2013 |
Tech Insight
A spool replaces the entire differential carrier, eliminating spider gears and permanently locking both axle shafts together. This results in maximum traction but also removes the ability for wheels to rotate at different speeds during turns.
Because of this, spools are best suited for dedicated off-road or race vehicles where traction outweighs street manners. For mixed-use rigs, a selectable locker may be a better option, but for pure performance and strength, a spool is one of the most reliable solutions available.
