Crazy Crawler LaserFoam "WP Magic 112x40" 1.9 Foam Crawler Tire Inserts are precision cut, waterproof, closed cell foam tire inserts designed for performance. The unique closed cell material clings to the tire, and this direct connection helps to reduce internal movement of the insert, helping to increase stability. The material and cut shape ensure that the tire only rolls in the area of the tread that is in contact with the surface, creating great driving characteristics and an incredibly scale look.
LaserFoam WP Magic 112x40mm inserts are RECON G6 Certified, and are designed for heavier, 10+ pound trucks. These fit Traxxas Canyon Trail 1.9 tires.
I ended up going to the ProLine dual inserts and they are perfect for my application. If my truck exceeds 10lbs, these Crazy Crawlers will get installed.