Founded in 1956 in Nagoya, Japan, Koyorad (originally Ejiri Radiator) evolved from a family radiator repair shop into a global leader in high-performance heat exchangers. From manufacturing copper/brass plate-fin cores in the ’60s, they later pioneered Japan’s race radiator segment in 1999 and launched their U.S. division in 2000, followed by all-aluminum racing radiators in 2004.

Today, Koyorad controls the entire production chain—from engineering and R&D in Japan to ISO‑certified manufacturing in Indonesia, China, and the U.S.—ensuring OE-level fitment, triple leak testing, and plug‑and‑play design for over 100 vehicle applications. Their V‑Core and Hyper Core aluminum radiators feature hand-tig-welded tanks, Nocolok brazing, and thick cores that deliver over 50 % better cooling—ideal for street or track.

Supported by global distribution and family-led quality control, Koyorad remains dedicated to “making heat work smarter, not harder.” Whether you’re upgrading OEM cooling or prepping a race car, Koyorad radiators set the benchmark in durability, performance, and precision‐fit reliability.