JUN Auto Mechanic Shop is another of Japan's engineering powerhouses. JUN's race and engineering history date back 50 years, and they produce a wide variety of high precision, quality crafted automotive performance products.

Participating in all forms of racing, including US Bonneville Speed Trials, drag racing, formula racing, and other highly competitive sports, JUN has been a visible presence in Japan's automotive and motorsports history.

JUN is most famous for their engine building components, which include camshafts, crankshafts, and other unique items. Their "Super" and "Hyper Lemon" demo cars are well known across the world.