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Mini Spool for Ford 9' - 31 Spline, Black Metal Differential Lock

Free shipping on orders over $29.99

$25.00

$ 11 .99 $11.99

In Stock

About this item

  • Fits Open for Ford 9" (Non Posi, Non-Locker, Non Limited-Slip) Carriers
  • Provides Complete Lock-Up
  • 31 Spline Axles
  • Will Not Fit Posi Carriers


Mini Spool for Ford 9" with 31 spline axles. Mini Spools will install into a standard open (non-posi) carrier to provide full-time complete lock-up to both rear wheels. Not recommended for street vehicles. Includes 1 Year Warranty against manufacturing defects.


zack williams
2025-09-04 17:35:22
It fits the carrier perfect and works exactly as advertised. on road i chirp tires turning corners but off-road it delivers all the power to both rear tires 100%. You could weld your spider gears but honestly this is easier and you don't need other equipment. some of the other mini spools for the 9' have 4 holes for pins and that may be stronger for higher hp applications.
Steven
2025-08-01 14:21:08
This fit in my 1976 f150 mud truck. fit just fine in my 9 inch. didnt have to modify anything. worked great!
greg hawkins
2025-07-04 11:49:14
Working good so far.
corey landis
2025-06-15 11:50:33
Very nice quality product fast shipping
Justin Houck
2025-06-07 13:13:56
Fit on pin was too tight had to machine to make work. Will not buy again
NC
2025-03-21 16:34:29
Have not put any power to it, but bought it for mock up (these can keep axles more or less lined up in your 9" housing w/out the 3rd member in place.
Mike D
2025-01-27 10:37:43
Worked perfect
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