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$5.50
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$9.00
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$5.50
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$5.50
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$6.25
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$7.00
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$4.50
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$30.00
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$20.50
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$8.00
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$17.00
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$28.50
These motion parts are designed to make things move. Motors provide the rotational power; gears, sprockets, and wheels transmit and transform that power; and bearings help reduce friction. A useful motion system consists of many of these parts working together. The diagrams below depict a few basic motion assemblies. Explore the subcategories for more information or visit the Tech Resources page for detailed building guides.