McCumbee McAleer Racing (MMR) is proud to announce its expansion into the Pirelli GT4 America Championship, fielding Ford Racing Driver Development Team member Jenson Altzman and Zach Lee in the highly competitive Pro-Am class for the 2026 season. The duo will represent Ford Racing in the Ford Mustang GT4 as a part of MMR’s continued growth within the global GT4 platform.
Lee brings significant Mustang experience to the program, having competed in the Mustang Challenge one-make series over the past two seasons in the Dark Horse R, where he recorded 21 starts and nine class victories. Altzman’s path through the Ford Racing sports car ladder has seen him compete in the Dark Horse R, Mustang GT4, and Mustang GT3, effectively completing the Ford Racing sports car pyramid. He has also gained valuable SRO experience with the Mustang GT4, earning an opportunity to compete in the Monochrome GT4 Australia series with Wallis Motorsport at The Bend.
The Pirelli GT4 America Championship, sanctioned by SRO Motorsports Group, has experienced explosive growth in recent years and features some of the most competitive wheel-to-wheel racing in North America. Utilizing FIA-homologated GT4 machinery, the series showcases leading manufacturers including Aston Martin, Audi, BMW, Ford, Porsche, and Toyota. The championship operates in a two-driver, 60-minute double-header sprint format across iconic circuits throughout the United States.
With this move, MMR strengthens its GT4 footprint and deepens its partnership with Ford Racing, bringing together experience, development talent, and championship ambition.
Driver Quotes
“Really happy to be back with McCumbee McAleer Racing for 2026 and joining Zach as he makes his GT4 debut! I know SRO has been on Chad and Stevan's radar for quite a while to expand their GT4 program, so I'm excited this is coming together for them.
Being a part of the Ford Racing Driver Development Team and seeing the massive amount of recent success for Mustang GT4, we knew the GT4 America grid was the next place to strengthen our global presence even further. Personally, I’ve also been keen to make my way into the SRO paddock, so it couldn’t have worked out any better than running with MMR and Zach Lee.
I've known Zach since my first year racing cars when we were teammates at MMR in 2021; we've always said how much fun it would be to race GT4 together… guess 2026 is that year!
A big thank you to Ford Racing, MMR, and DeTect for the support on this program. Bring on Sonoma!”
Zach Lee
“This is the life: racing a fire-breathing 500-horsepower muscle car with a young future star on a team of wonderful people who I consider family. This is the height of adventure and privilege.
Over the last two seasons competing in Mustang Challenge with the Dark Horse R, I’ve gained so much respect for what Ford is building and the level of competition within the Mustang platform. Moving into GT4 America feels like the next big step, and I’m incredibly grateful to Ford Racing and MMR for the opportunity to continue growing within this program. Let’s see what we can do.”