Stephen and Willie Holden, better known as the Holden Bros. Diesel, are the dynamic duo behind the off-road shop, content channel, and diesel empire based in Boerne, Texas.  With roots in heavy-duty diesel repair and a whole lot of horsepower passion, these brothers know everything from engine rebuilds to mud-slinging carnage.

Their shop in the Hill Country is more than just a service bay—it’s a playground, content studio, and community hub . They’ve racked up a loyal following on Instagram and YouTube by blending serious truck know-how with edgy diesel builds and wild recoveries .

As Interco Brand Ambassadors, the Holdens bring that same no-BS energy to the mud and trail. Whether they’re running Swamper BOG explosives in a turbo-diesel behemoth or test-driving the latest STT setups, they trust Interco to deliver unbeatable grip, rugged durability, and the aggressive stance that their builds demand.

 Their hands-on shop experience means they know firsthand how tire performance translates into torque control, traction, and truck longevity. Their videos—such as that notorious truck rescue that “almost landed us in jail”—show personality, performance, and the real-world value of Interco tires, making them ideal Interco Brand Ambassadors.

From Boerne to the backwoods, they live for the thick stuff—and Interco tires are their go-to when terrain laughs at lesser rubber.