HKS Japan has been around since 1973 and is the most respected large tuning company around. Some of you may remember the first EVC just after the VVC was retired. This was in the beginning of the race boom that helped HKS become the dominant company it is now. Since then HKS has been researching and racing JDM cars and is on top of the game bar none!! HKS quality is very good and as a company HKS is considered to be one of the toughest hard lined ones out there. Because of this and their policies on a very select few tuners hold the Meister tuning license for the F-CON V gold. HKS has very strong ties to Yamaha and this is where HKS got its start and engineering experience from. HKS has made race motors for Yamaha motorcycles and they also currently make small aircraft motors. HKS products are the way to go for just about any racer out there!
HKS Japan's website