These pre-mounted tire and wheel assemblies are specifically designed to upgrade the crawling performance of the Kyosho MX-01 Mini-Z 4x4 Jimny Sierra. Featuring a soft compound rubber tire for superior grip on various terrains and durable plastic wheels with integrated internal metal weights, they significantly improve traction and lower the vehicle's center of gravity. This enhancement leads to increased stability and improved obstacle negotiation, making them an essential upgrade for serious scale rock crawling enthusiasts looking for a noticeable performance boost right out of the package.