Heather Tausch, senior director of marketing, described the Boss XS as an "evolution" of the Baja Boss M/T.
Tausch said Mickey Thompson has long worked with Ultra4 off-road race teams to design tires to handle the varied terrain of competition-style rock crawling, endurance desert racing and short course style racing. In this space, the Baja boss M/T — released in 2019 and available in 33 sizes — has been successful. This year, she said, it was used by driver Jeremy Jones in winning both the King of the Hammers Everyman challenge and the Ultra4 Legends West Championship.
In the Baja lineup, the Boss XS sits between the Boss M/T and the Boss X — the competition-only tire also known as "Sticky Mickey."
Ben Anderson, senior product manager of light truck at Mickey Thompson, said they wanted to combine qualities of both the M/T and X.
"For the (racing) class that requires a DOT-approved tire that's readily available to the public, we developed the Baja Boss XS," he said. "It combines the competition-proven compound and design of the Baja Boss M/T, and utilizes the 4-ply and sidewall technology of the Boss X."
The Baja Boss XS uses the same silica-reinforced compound as the M/T. It features a "high-void, purpose-built asymmetric tread pattern mated to large four-pitch SideBiters that create a biting surface capable of tackling extreme rocky terrain," the company said.