Vehicle, Base 4x6 Racer Base with Black Wheels and Light Gray Bumper, LEGO® Part# 30558c01. Appears in red in set# 4569-1 (Warrior). Appears in tan in set# 4576-1 (Duster). Appears in orange in set# 4578-1 (Ghost). Appears in violet in set# 4566-1 (Gear). 

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