Koyorad (Koyo) is one of Japan's most trusted radiator manufacturers, supplying both OEM and high-performance aftermarket cooling. The range features all-aluminium Hyper Core and racing radiators engineered to cut coolant temperatures on turbocharged and track-driven JDM cars such as the Silvia, GT-R, RX-7 and Lancer Evo. Lightweight, high-efficiency cores deliver reliable cooling under sustained load. Black Hawk Japan stocks the full Koyorad range, sourced direct from Japan.