WRX CUSTOMIZED PARTS

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 (BOXER'S 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 products for SUBARU WRX.

  • LEGAMAX Premium

    High Performance & Stylish Appearance!

    "90mm slashed dual tips coming from both sides provides stylish appearance.
    74.7mm→60.5mm×2 pipes & straight silencer enable use with highly tuned vehicles."
    Silent Chamber Reduces Unwanted Low Resonance!

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  • Hi-Power

    Bullet-type titanium tips makes sporty appearance.

    Small diameter bullet type silencer with titanium colored tips make projects a sporty image.

    for VAFmore information

    for VAGmore information

  • Hi-Power SPEC-L II

    Weight reduction, low exhaust pressure, improved drivability and exhaust efficiency.

    for VAFmore information

    for VAGmore information

  • Hi-Power SPEC-L

    Sporty and Light weight

    It's very light even with the stainless material. The muffler shape is bullet shell with fiber carbon wrapped at tail tip.

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  • Super Turbo Muffler

    Exhaust System Integrating Low Exhaust Pressure & Silence

    Not just powerful performance with quiet sound!
    Once stepping on the accelerator pedal, dry sporty exhaust sound is heard throughout the comfortable vehicle's interior.

    for VAB
    (Twin)
    more information

    for VAB
    (Single)
    more information

    for VAGmore information

  • Super Turbo Muffler Ti

    An exhaust in pursuit of engineering perfection.

    Using titanium as main material, HKS was able to make an ultra-light exhaust, decreasing weight almost 48% compared to the same series of the exhaust in stainless steel. It drastically reduces exhaust restrictions with 75mm piping and straight inner structure of muffler. This is an exhaust that is comfortable and quiet for cruising yet has a raspy sporty sound during acceleration.

    for VABmore information

    for VAGmore information

  • LEGAMAX Premium

    Impressive Appearance with Double-sided Dual Exhaust Tips

    Blue graduation dual exhaust tips enhance the appearance from behind!
    Straight pipe structure, but pleasant vehicle inside space is provided without uncomfortable exhaust resonance.

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  • Metal Catalyzer

    The sports type catalyzer that withstands the high engine power and provides high purifying performance required by a high performance car.
    Optimizing the number of cells and piping improves the engine output and response. The difference can be felt right after installation.

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  • Engine Response Improvement & Smooth Acceleration to High Speed

    Improved exhaust efficiency provides more fun to drive.

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  • MAX IV GT 20 SPEC

    Based on MAX IV GT and updated with latest technologies. Street suspension created with consideration of comfort and stability. A suspension kit that is exciting and sporty, yet balanced and suitable for a daily driver.

    for VABmore information

    for VAGmore information

  • MAX IV GT Spec-A

    "MAX IV GT Spec-A" is a new HKS suspension model with new concept based on MAX IV GT.
    The ride quality for street and motion performance is achieved together in higher levels by securing sufficient stroke amount than conventional MAX IV GT.

    for VABmore information

    for VAGmore information

    for VAFmore information

  • Most effective and smooth suspension for strong body

    We setup this suspension with conventional HIPERMAX single tube structure and new system of variable port system and piston. It provides smooth and yet strong and stable feeling to the driving.

    for VAFmore information

    for VAGmore information

  • MAX IV SP

    Sport model to drive for the winding roads

    It's not hard setting damper but aggressively active setting. We have set it for enough stroke to move. This suspension will provide stable and safe driving by not allowing tires to float.

    for VABmore information

    for VAGmore information

  • HIPERMAX G

    OEM Design Suspension Kit - Obsession with High Quality

    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.

    for VABmore information

    for VAGmore information

  • Super Power Flow

    The definition of aftermarket air cleaner trusted and loved every where in the world.

    SPF enhances typical turbo intake sound and improves acceleration response.

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  • 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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  • DryCaron Suction Kit

    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 emphasize the natural beauty of carbon fiber. The intake efficiency is higher than the stock, but is still compatible with stock engine management.

    for WRX
    STI/VAB
    more information

    for WRX
    S4/VAG
    more information

  • Super SQV4

    Dual valve structure allows the pressure control over all boost range.

    Reliable operation in a wide boost range is possible.
    The pressure control is performed stably.
    The blow-off sound from Super SQV4 makes driving more fun and aggressive!
    The operation sound level can be adjusted by installing the suction return parts included in the kit.

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  • OIL COOLER KIT

    Factory air to water oil cooler is not enough to sustain appropriate engine oil temperatures during track use. Indeed, in our tests on Fuji Speedway Circuit we have recorded oil temperatures significantly rising, subsequently leading to increasing of coolant temperature levels as well. Adding air to air oil cooler core to the system allows not only to reduce engine oil temperature but to stabilize the temperature of the coolant as well.

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HKS parts for SUBARU WRX STI [VAB] / S4 [VAG]

Code No. Product Remark
EXHAUST
31021-BF001
LEGAMAX Premium  
31021-AF024
LEGAMAX Premium for VAG Rear section only.
31019-AF130
Hi-Power SPEC-L II Main + Center pipe
Tail cover size:φ94 L=48, OPTION Tail Requirement (pcs):2
31019-AF030
Hi-Power SPEC-L (Center+Main)  
31006-BF001
Hi-Power Muffler  
31029-AF011
Super Turbo Muffler (Center+Main) Center pipe included.
* The tip's color is silver not blue gradation.
31029-AF012
Super Turbo Muffler * The tip's color is silver not blue gradation.
31029-AF013V
Super Turbo Muffler Ti  
33005-AF014
Metal Catalyzer for VAB For 6MT. Front pipe included.
33005-AF019
Metal Catalyzer for VAG Stock weight:4.1kg→HKS:3.6kg
In development Exhaust & ECU Package Metal Catalyzer + Flash Editor
SUSPENSION
80230-AF009A
HIPERMAX MAX IV GT 20 SPEC for VAB 6MT
80230-AF009A
HIPERMAX MAX IV GT 20 SPEC for VAG Vehicle height and longitudinal dimensions are estimated.
80230-AF009V
HIPERMAX MAX IV GT Spec-A for VAB *Bump rubber which is equivalent to 19N/mm(2kgf/mm)
spring rate is installed as well
80230-AF009V
HIPERMAX MAX IV GT Spec-A for VAG *Bump rubber which is equivalent to 19N/mm(2kgf/mm)
spring rate is installed as well
80230-AF009V
HIPERMAX MAX IV GT Spec-A for VAF *Bump rubber which is equivalent to 19N/mm(2kgf/mm)
spring rate is installed as well
80230-AF008
HIPERMAX MAX IV GT for VAG  
80230-AF008
HIPERMAX MAX IV GT for VAF  
80250-AF003
HIPERMAX MAX IV SP for VAB  
80250-AF003
HIPERMAX MAX IV SP for VAG  
80260-AF001
HIPERMAX G for VAB  
80260-AF002
HIPERMAX G for VAG  
INTAKE/BLOW OFF
70019-AF107
Super Power Flow For S4
70020-AF108
Racing Suction For STI
* ECU setting is required when combination use of the
metal catalyzer or removing the airflow adapter guide
70020-AF107
Racing Suction * Discontinued.
For STI
Requires ECU recalibration
In development Premium Suction  
70017-AF101
SUPER AIR FILTER  
70026-AF001
DryCarbon Suction Kit For STI
70026-AF003
DryCarbon Suction Kit For S4
70999-AF001 Air Intake Funnel Discontinued.
71008-AF013
SQV IV For STI
71002-AF002
SQV Return Kit For STI
71008-AF013V SQVⅣ+Return Set For STI
ELECTRONICS
45999-AK002
OB-LINK TYPE001 Checking  
COOLING
15004-AF011
OIL COOLER KIT for VAB Time Required: 6 hours
E/G Oil Reguired: 5.5l
S type Intercooler, #10 Hose size, Aluminum Air guide. EJ20 Only.
ENGINE
14007-AF003
FUEL UPGRADE KIT for VAB  
FUEL
24996-AK035
FINE TUNE V-BELT 6PK1905  
POWER TRAIN
26010-AF001
LA CLUTCH  
26011-AF001
LA CLUTCH TWIN  
OIL & OIL FILTER
52009-AK005
OIL FILTER  
24003-AK002
Billet Oil Filler Cap  
PLUG
50003-M35iL SUPER FIRE RACING M35iL For STI
50003-M40iL SUPER FIRE RACING M40iL For STI
50003-M45iL SUPER FIRE RACING M45iL For STI
50003-M40HL SUPER FIRE RACING M40HL For S4
50003-M45HL SUPER FIRE RACING M45HL For S4
50003-M50HL SUPER FIRE RACING M50HL For S4