A Decade of Speed: The Rosario brothers and the 10th anniversary of Import vs Domestic Michigan showdown at US 131 Motorsports Park.

For ten straight years, the thunderous echo of horsepower has shaken the grounds of US 131 Motorsports Park in Martin, Michigan—home to the annual Import vs Domestic Showdown. Spearheaded by the passionate and ever-driven Rosario Brothers, this event has grown from a grassroots battle between platforms into a full-fledged festival of speed, innovation, and culture.

Built by Passion: The Rosario Brothers’ Vision

What began as a simple gathering of car enthusiasts has evolved into a high-stakes, high-speed spectacle drawing thousands. At the center of it all? The Rosario Brothers—whose dedication to the racing scene and community spirit have built something far greater than just a race weekend.

With pro classes boasting staggering payouts and crowd-favorite events like the Quick 32 shootout, they’ve elevated Import vs Domestic into the premier summer showdown in the Midwest.

Brian Acton’s Ironman Effort

Among the many stories to come out of the 10th anniversary, Brian Acton’s feat stood out. After logging over 600 miles of brutal street and strip racing at Sick Summer 2025, Acton turned around and showed up—ready to compete—in Martin. That kind of heart isn’t just rare, it’s legendary.

His dedication and tenacity captured what this community is all about: showing up, no matter how worn the tires or how little sleep you’ve had.

Welding a Brotherhood: Jimmer Kline always helps racers in need.

The weekend also reminded everyone that sometimes, the race is won long before the green light. Jimmer Kline, founder of Go Fast Productions, proved that when a driver from Canada faced mechanical issues the night before competition. Jimmer opened his personal shop, fired up the welder, and made sure the racer had a shot on race day.

Moments like that don’t show up on time slips—but they’re the backbone of this sport.

Ten Years, Thousands of Memories

Beyond the burnouts and bracket wins, this year’s Import vs Domestic Showdown was a celebration of community. Fans and racers came from across the continent to be part of it. Pre-show parties in Grand Rapids, custom car showcases, stereo battles—you name it, this event had it.

The Rosario Brothers didn’t just build a race. They built a legacy.

If this event proves anything, it’s that horsepower fades—but the bonds, stories, and grit that define motorsports only grow stronger with time.