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Full Spools and Mini Spools
You don’t want to be a one-tire fryer at the track, and welds can weaken your axles—full spools and mini spools are the stronger way to lock your axles together...
You don’t want to be a one-tire fryer at the track, and welds can weaken your axles—full spools and mini spools are the stronger way to lock your axles together for maximum traction!
Spools (also called full spools) replace your differential carrier and lock the left and right axles together. There are no moving parts, they add support to the ring gear, and they can save unsprung weight.
Mini spools fit inside an existing open differential, replacing the side and spider gears. They’re usually less expensive, but aren’t as strong as full spools.
Top Brands
For maximum traction, shop for spools and...
You don’t want to be a one-tire fryer at the track, and welds can weaken your axles—full spools and mini spools are the stronger way to lock your axles together for maximum traction!
Spools (also called full spools) replace your differential carrier and lock the left and right axles together. There are no moving parts, they add support to the ring gear, and they can save unsprung weight.
Mini spools fit inside an existing open differential, replacing the side and spider gears. They’re usually less expensive, but aren’t as strong as full spools.
Top Brands
For maximum traction, shop for spools and mini spools at Summit Racing Equipment—find your axle size below. Summit carries trusted name brands like Strange Engineering, Yukon Gear, Dana Spicer, Motive Gear, Moser, Allstar, and more.
Spool, Pro Race, Lightweight, Steel, 35-spline, 12-bolt, GM 8.875 in., Passenger Car, Each
Part Number: STR-D1541
Not Yet Reviewed
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spool, Full Size, Steel, 33-Spline, 12-Bolt, GM 8.875 in., Each
Part Number: STR-D1549
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spool, Full Size, Steel, 35-Spline, 10-Bolt, Dana 60, For 4.10-6.50 Richmond and 4.56-7.17 Ratio Dana/Spicer Gear Sets, Each
Part Number: STR-D1548
Estimated Ship Date: Tomorrow
Estimated Ship Date: Tomorrow
Spool, Full Size, Steel, 35-Spline, 10-Bolt, Dana 60, Each
Part Number: STR-D1547
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Spool, Pro Race, Lightweight, Steel, 33-Spline, GM, 12-Bolt Passenger Car, 8.875 in., Each
Part Number: STR-D1540
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
D60 40 spline aluminum spool- 5 series
Part Number: STR-D1545
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Pro spool -L/W Steel 40 spline Dana 60 (3-series)
Part Number: STR-D1544
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Spool, Full Size, Steel, 40-Spline, 10-Bolt, Dana 60, Each
Part Number: STR-D1546
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
Pro spool- L/W steel /Strange 35 spl 12 blt. GM car (3-series)
Part Number: STR-D1542
Not Yet Reviewed
Estimated Ship Date: May 27, 2026 if ordered today
Estimated Ship Date: May 27, 2026 if ordered today
