Truck Spools and Mini Spools

A full spool eliminates wheel spin by locking both axle shafts together, delivering maximum traction off the line—essential for drag racing, road racing, and high-performance street applications. The 31-spline design provides robust engagement with Ford...

If you're running a locked rear end on the street or strip, a mini spool delivers the straight-line acceleration and reliability of a full spool without the extreme understeer in corners. The Mini Spool Ford 9in 31 Spline is a lightened steel design...

If you're running a Ford 9-inch rear and need absolute traction off the line without the complexity of a full locker, a mini spool is the direct answer. This lightened steel spool eliminates differential action entirely, forcing both wheels to rotate at...

A mini spool eliminates wheel slip and delivers decisive power to both rear wheels under acceleration, making it essential for drag racing, autocross, and high-traction driving scenarios. Unlike open differentials, this 31-spline unit locks the Ford 8...

A mini spool transforms your Ford 8.8in differential into a locked unit, delivering instant power delivery to both rear wheels for aggressive acceleration and improved traction during hard launches. This is essential for track-focused builds where...

A mini spool eliminates wheel speed differentiation during cornering, delivering predictable power transfer and tighter handling characteristics on track or strip. If you're running a GM 10-bolt and need a no-compromise differential solution, this...

A mini spool delivers the lock-up characteristics your GM 12-bolt needs for consistent traction off the line, eliminating axle speed differentiation that costs you time and grip. Whether you're road racing, autocrossing, or drag racing, this steel spool...

A mini spool eliminates wheel slip by locking both rear wheels together, delivering consistent traction for drag racing, road course competition, and high-performance street applications. Unlike a standard differential, this spool ensures equal power...

A mini spool locks both rear wheels together for predictable weight transfer and consistent traction off the line—essential for drag racing, road course competition, or any application where wheel spin costs you time. Unlike open differentials, this...

A full spool eliminates wheel spin by locking both rear wheels together, delivering maximum traction off the line and through corners—essential for drag racing, road course competition, and serious street performance. The 31-spline design provides...

A full spool eliminates wheel slip and delivers maximum traction when you need it most—ideal for drag racing, track days, or high-performance street applications where consistent power delivery matters. Unlike limited-slip designs, a spool locks both...

If you're running a GM 7.5-inch rear end and need bulletproof traction off the line, a mini spool delivers the lock-up consistency that separates winners from the rest. This steel unit eliminates wheel spin by forcing both wheels to rotate at identical...