
Increasing the amount of exhaust flow is the first progressive step to increased engine performance and efficiency. The factory exhaust system represents a restriction in the stock configuration. By designing a system that increases the mass and velocity of exhaust flow, it allows for a reduction in backpressure and thermal stress, thus unleashing the engines’ potential for increased power, torque and responsiveness.

Engine power is directly related to the rate of incoming and outgoing airflow, and many factory intake systems are highly restrictive, thus limiting engine horsepower and torque. One of the easiest and most inexpensive ways to increase engine response is to replace the stock air cleaner or intake system with our high performance aftermarket product. HKS high performance air intake systems offer an optimal balance of air filtration and increased airflow for maximum performance and protection.

Tuning your vehicle’s suspension is one of the easiest ways to instantly improve overall Driving Performance. HKS offers a complete line up of coilover suspension systems starting with the comfortable Hipermax CLX to the street and track ready Hipermax III, and Hipermax III Sports. HKS has utilized its experience from 35 years of circuit, F3, GT, drift, and drag racing to bring you the cutting edge in suspension technology.

Modern cars rely more and more heavily upon electronics to control the operation of various functions. HKS has developed an extensive range of electronics to complement the selection of HKS tuning parts available to offer a complete line up following HKS’ “Total Tuning Concept”.

As tuning levels increase, the amount of heat generated by the engine and other components will also increase. Heat management becomes a big factor in achieving reliable power and sports driving.
HKS supplies intercooler kits, intercooler piping kits and oil coolers which will not only cool but offers peace of mind when driving on the street or circuit.

Engine tuning relies on two major factors to increase power and torque, more air and more fuel. As the amount of air flow into the engine increases, more fuel must be present to maintain the correct mixture for the most efficient combustion. For basic tuning, the stock ECU and fuel system can detect the increased air flow and match this by increasing the amount of fuel which is injected into the engine. However the limit of the stock fuel system is easy to reach and further tuning without addressing the fuelling can lead to engine damage or failure.

As engine power is increased, the load and strain is then passed on to other parts of the vehicle. The main weak points are found in the clutch and transmission. With its range of clutches and transmissions, HKS can help transfer your new found engine power to the ground in the most efficient way.

Spark plugs become a key factor in clean and complete combustion in any petrol engine. Clean and complete combustion is paramount in performance tuning as the power produced is directly related to the force of the combustion. HKS offers a large range of spark plugs to accommodate a wide range of vehicles in varying different states of tune.
In October 1973, two talented and spirited young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not or would not produce.
Led by Hiroyuki Hasegawa, a former engineer for Yamaha Motor Company, and his partner Goichi Kitagawa, the two secured a capital infusion from Sigma Automotive Co., Ltd. (hence the name “HKS ”), and began tuning gasoline powered engines in a dairy-farming shed at the foot of Mount Fuji in Japan. A year later, Mr. Hasegawa designed and built the first aftermarket turbocharger for passenger cars and has never looked back.
HKS pioneered the Japanese aftermarket performance industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back fuel computers and sophisticated fuel management tools. Clearly HKS was Driving Performance trends for Japanese vehicles.
Since its beginning, HKS has been committed to providing well-integrated, reliable, and environmentally sound performance systems. Mr. Hasegawa’s strong leadership, engineering genius, creativity and willingness to listen to customers are the pillars of the company’s success. Monitoring consumer reaction and input on issues pertaining to material quality, external appearance, sound quality, and of course, performance, HKS stays in tune with automotive enthusiasts’ needs. Moreover, HKS’ products are designed to be user friendly for easy installation.
Today the automotive aftermarket industry is filled with start-up companies following in HKS’ footsteps. None however, can match the depth of engineering or manufacturing resources available to the talented, highly motivated and dedicated employees of HKS.
For over 35 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 35+years.
With our brand new, 100,000 sq. ft., state-of-the-art manufacturing and R&D facility at the foot of Mount Fuji, HKS is certain to stay in the lead of tomorrow’s technology.





