Trapdoor Towers are rather old-looking buildings found in Showdown Town, each one holding a Mumbo Crate that contains a special or unique vehicle part. The Trapdoor Towers require a special combination to release the Mumbo Crate stored inside. The combination, however, must first be bought from someone willing to sell it. The combinations can be entered by using the Wrench-It Bolts on the top of each. Those who will sell Banjo a combination include Bottles, Mr. Fit, and Captain Blubber. Once a crate has been released, the police force will be hot on your trail.

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