Quick Performance Spool - Ford 8.8 - 31 Spline 

**This spool if for factory C-Clip style and length axles utilizing C-Clip eliminators with the factory housing**

This is NOT the Pro style spool that would require axle replacement. 

The difference is where the splines are formed in spool to ensure proper spline engagement. 

Pro style spools move the internal splines on the driver's side of the car about 1 - 1.5" not allowing the axle splines to mesh properly.