SUBARU WRX/STI
Featured Car Model
SUBARU WRX/STI


The 4th generation WRX sport sedan that has both good drivability and safety.
HKS has been making tuning parts for 2nd and 3rd generation Impreza WRX "BB Tune (Boxers Balance Tuning)" which is safe and highly efficient tuning. And we put all the know-hows from old parts and the new technology together to make another great product for Subaru WRX.

EXHAUST

EXHAUST
SUPER TURBO MUFFLER

SUPER TURBO MUFFLER

"High-dimensional Super Turbo Muffler Debut" Exhaust Efficiency & Sound Pressure Reduction are implemented together. The turbo engine master HKS challenged to implement the following 3 characteristics together to develop Super Turbo Muffler. Effective on stock to high performanceA vehicles w/ upgraded turbines. The performance exhaust sound meets the JASMA standard. Unique exhaust sound designed specifically for the engine.
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LEGAMAX PREMIUM

LEGAMAX PREMIUM

Advanced Legamax with vehicle specific stylish tip design. Legamax Premium mufflers offer the performance benefits of a sports muffler with the class and elegance of a premium muffler. Every tail pipe design is customised per application to ensure that muffler has impact and becomes a focal point in the appearance of the vehicle, yet blends with the overall design of the car. Legamax Premium mufflers are constructed of SUS304 grade stainless steel to give a high lustre finish which is durable. Some applications also incorporate the latest automotive fashion trends by featuring titanium tail tips which adds to the premium appearance with its distinct look.
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HI-POWER SPEC-L

HI-POWER SPEC-L

The concept is the "light weight". It will give you the sporty look because of the carbon wrapped tip. The weight gets half of the stock muffler. We made each pipe and silencer lighter. The appearance is aggressive cannonball design and we wrapped it with carbon at the tail. It is a pure sport muffler which has improvement in weight and output performance.
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HI-POWER

HI-POWER

HKS Hi-Power Muffler came back with the same concept, "High Power & High Performance", and "Resonant Sound" and "Stylish" are harmonized together.
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EXHAUST MANIFOLD

EXHAUST MANIFOLD

HKS Exhaust technology, which is know-how of long time development, targets to pull out 100% engine performance with the exhaust manifold. A lot of different approach were tried for each vehicle to keep performance for middle rpm range and to improve horsepower at high rpm.
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METAL CATALYZER

METAL CATALYZER

For further performance enhancement. Universal sport type catalytic converter that can be used various level of tuning cars. It is well balanced for high horsepower and high cleaning performance. Target Horsepower 500 - 600PS. It is well balanced for high horsepower and high cleaning performance. Oval and Round types are released for various vehicles. Oval Type can be used for D85 - D90 and Round Type can be used for D115. (Modification is required.) As they are universal type, flanges need to be welded.
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SUSPENSION

SUSPENSION
HIPERMAX S

HIPERMAX S

To pursue a comfortable ride and more enjoyable handling performance.
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HIPERMAX G

HIPERMAX G

~Obsession with High Quality~ Integration of quality over cost principles of tuning parts and benefits and compatibility gained from OEM design. Unlike most stock fitment type suspension kits, premium "ride comfort," "style," and "stability" are pursued at the highest level and realized by HKS in this product.
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INTAKE

INTAKE
COLD AIR INTAKE KIT

COLD AIR INTAKE KIT

Combination of carefully crafted carbon cold air intake box and high performance Racing Suction intake adds a premium touch to engine bay and significantly improves quality of air supply to the engine. Carbon intake box is an effective protection from hot air around the engine. Constant supply of fresh air during driving helps to decrease intake temperature. - Dry Carbon Cold Air Intake Box for exquisite and sporty look - Polished Aluminum Piping to replace stock rubber hose and further improve air flow
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RACING SUCTION

RACING SUCTION

The most powerful intake system carefully designed to fit engine room of a vehicle. HKS Racing Suction pushes air intake system efficiency to the limits.
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SUPER POWER FLOW

SUPER POWER FLOW

Filter of Super Power Flow collects dust and intake efficiency will decrease after long time usage. In order to keep dust collection and engine performance, filter should be periodically replaced.
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DRY CARBON SUCTION

DRY CARBON SUCTION

Carbon fiber was chosen for its high tensile strength and beautiful appearance. The twill weave emphasizes each strand of carbon and delivers a premium motorsport appearance. A Matte top coat is used to reduce unnecessary reflection and emphasizes the natural beauty of carbon fiber. The intake efficiency is higher than the stock, but is still compatible with stock engine management.
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ENGINE

ENGINE
FINE TUNE BELT

FINE TUNE BELT

This timing belts best suited for use with HKS Slide Cam-Pulley. Optimized belt strength for each engine application makes the Fine Tune Timing Belt ideal for use with HKS Slide Cam-Pulleys for high power/high RPM engine.
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FUEL

FUEL
FUEL UPGRADE KIT

FUEL UPGRADE KIT

Taper shaped injector improved atomization performance. In-tank fuel pump's capacity can be increased without modification.
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POWERTRAIN

POWERTRAIN
LA CLUTCH TWIN PLATE

LA CLUTCH TWIN PLATE

The tuning expert HKS provides the clutch system for streets and sports use. Capable torque, pedal effort, and semi-engagement range are closely examined for various driving situations. Despite the support of approximately 700ps, the main concept for the Twin Plate LA Clutch remains the same. Using "MG Composite Discs" to reduce judder and achieve better driving feel compare to stock clutch. Disc dampers are used to reduce gear noise and protect the transmission from shock torque. The LA Twin also has a "Pivot Ring" within the pressure plate to offer partial engagement like no other twin plate clutch.
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LA CLUTCH

LA CLUTCH

HKS LA Clutch (Light Action) combines accurate high level power transfer from engine to transmission while offering easy to use clutch feel which is particularly noticeable when the clutch is half engaged. Suitable for use on the streets or for sports use, LA Clutch is a single plate clutch which can support approximately 450ps (*1). HKS LA Clutch is a complete set including clutch disc, cover and flywheel. The newly designed "MG Composite disc" developed to reduce juddering to enable the same driving feel as the stock clutch, yet with the capabilities of handling more power. The disc damper also reduces impact and strain on drive train parts. (*1) For pull type clutches
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