Differential Spool

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Spool (eliminates differential, use off-road only) (requires #4981 ring gear) 4981X DIFFERENTIAL SPOOL: This differential spool replaces the rear differential gear. The spool locks the axle, providing equal power to both wheels no matter what the truck drives over. If you’re building a Maxx truck for straight-line sand drags, hill climbing or pulling, you can replace the rear differential with a spool for increased 2WD traction. Show more