Parts & Extras

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Black Tire- 3 1/2in.

Item: # 91977


Price: $1.68

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Black Tire- 3 1/2 inch diameter Works with large gray pulley/insert (90979).

Currently, online instructions are not available for this set. For help building this set, please give us a call at 1-800-KID-KNEX (1-800-543-5639) or email us at

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Black Tire- 3 1/2in.

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