Traxxas 8179 1.9" trx-4 sport wheels come pre-glued with foam inserts to Canyon trail off-road tires. Sold as a pair. use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings.