Porsche introduces the race-ready 911 GT4 R for global GT4 racing
Porsche unveils the 911 GT4 R, a global GT4 racer based on the 911 platform with a 4.0‑L flat‑six that can deliver up to 520 PS in racing trim (BoP-adjusted ~430 PS), wider track and advanced electronics, built on Cup foundations with natural-fibre composites; it is set to debut in the 2027 season as Porsche expands its GT4 customer motorsport lineup.