These pre-mounted tires with integrated internal weights are specifically designed for the Kyosho MX-01 4Runner mini crawler, offering an immediate performance upgrade or direct replacement. Crafted from a high-grip rubber compound and securely mounted on durable composite plastic wheels, they significantly enhance traction and stability across challenging terrains such as rocks, dirt, and uneven trails. The strategically placed internal weights effectively lower the vehicle's center of gravity, greatly improving climbing ability and overall crawling precision, making them an essential component for enthusiasts seeking superior off-road capability and realistic scale performance.