Sebring International Raceway. 5.95 kilometres of patched WWII-era concrete, 17 turns, no mercy. One of the most storied circuits in American motorsport, host of the 12 Hours since 1952. Pirelli GT4 America arrives for Rounds 4 and 5 on Friday May 8 and Saturday May 9. Two 60-minute races, a doubleheader format, and championship points on the table for every team that survives the surface.

Colorado Motorsport lines up the No. 413 BMW M4 GT4 EVO with Craig and Zach Lumsden in AM class. Sonoma set the tone. A P3 AM-class podium in Race 2, converted from a clean front-row start, with pace shown throughout the full weekend. The team knows what the car can do. Sebring will ask a harder question.

The bumps are relentless, the heat is real, and 60 minutes leaves no room to recover from a slow start. Every tyre call matters. Every stint counts. Watch live on the SRO Motorsports Group YouTube channel. BOMBERG stands alongside Colorado Motorsport because the values are the same: precision under pressure, boldness in execution, and a refusal to settle for the middle of the pack.