According to Mattracks, its rubber-track conversion system for 4×4 vehicles can be installed in as little as 30 minutes. The conversion tracks are available in more than 30 models to fit vehicles up to 1.5 tons. The system also is available for front-wheel-assist tractors, for nondriven trailer wheels and for all-terrain vehicles. The new 105- and 150-Series models feature cast-aluminum frames and have gross vehicle weight ratings of 10,500 and 12,500 pounds, respectively.