These Traxxas TRX-4 Pre-Mounted Canyon Trail 1.9" Crawler Tires give TRX-4 owners an easy way to change the look of their rig! These tires are pre-mounted on the same wheel that is included with the Traxxas Bronco, and are a great choice for other TRX-4 models when you want a new look. Plus, the pre-mounted option means they are ready to install when you pull the tires out of the package. Package includes two pre-mounted tires on chrome wheels, and two center caps.