This is a set of optional parts for Mini 4WD car models.
From the manufacturer:
This Mini 4WD racer assembly kit creates a special yellow-themed version of the Shadow Shark. The body is molded in yellow and of course features the distinctive shark fin and slim-nosed silhouette. It can be decorated with the included metallic stickers which were designed specially for this model and feature black and red stripes. The AR chassis is molded in tough smoke-colored ABS resin, with the under panel and diffuser finished in yellow low-friction resin. Dark silver color fin-type wheels are combined with bright red low-profile hard tires for a jazzy finish.
Features 26mm hard low-profile tires. 3.5:1 gear, type 130 motor included.
Requires two AA batteries (sold separately).