HKS

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!

    more information

  • 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

  • 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.

    more information

  • 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.

    more information

  • HIPERMAX S

    After 9 years from the launch of MAXIV GT, new HIPERMAX S series was born for the superior “Driving Comfort" with advanced features in damping force, durability and appearance.

    for VABmore information

    for VAGmore 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.

    more information

  • 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.

    more information

  • Cold Air Intake

    Highly effective intake system designed for Racing Suction to increase flow of cold and oxygen dense air to the engine.

    COLD AIR INTAKE FULL KIT VAB more information

    COLD AIR INTAKE BOX KIT VAB more information

  • Caron 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

  • 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.

    more information

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

Code No. Product Remark
EXHAUST
31021-BF001
LEGAMAX Premium  
31021-AF024
LEGAMAX Premium for VAG Main pipe only.
Compatible with 3BA-VAG made after Aug 2020.
31019-AF130
Hi-Power SPEC-L II for VAG Tail cover size:φ94 L=48, 2 pcs needed
Includes Main pipe and Center pipe.
31019-AF130
Hi-Power SPEC-L II for VAB Compatible with S208 and TYPE RA-R.
Not compatible with S207.
Tail cover size:φ94 L=48, 2 pcs needed.
Includes Main pipe and Center pipe
31019-AF030
Hi-Power SPEC-L (Center+Main) * Discontinued.
31006-BF001
Hi-Power Muffler  
31029-AF011
Super Turbo Muffler (Center+Main) Includes Center pipe. Not compatible with S207, S208 and, TYPE RA-R.
* Silver color exhaust tip. (not burnt blue)
31029-AF013
Super Turbo Muffler for VAG Compatible with 3BA-VAG made after Aug 2020.
31029-AF013
Super Turbo Muffler for VAB 86dB at combination use of 33005-AF014.
Compatible with S207, S208, and TYPE RA-R.
31029-AF012
Super Turbo Muffler * Silver color exhaust tip. (not burnt blue)
Compatible with 3BA-VAG made after Aug 2020.
31029-AF013V
Super Turbo Muffler Ti for VAG Compatible with S207. Tail includes HKS logo.
Compatible with the vehicle with the STI rear side under spoiler & STI rear under spoiler.
Compatible with 3BA-VAG made after Aug 2020.
31029-AF013V
Super Turbo Muffler Ti for VAB Compatible with S207, S208, and TYPE RA-R. Tail with HKS logo.
Compatible with STI rear side under spoiler or STI rear under spoiler.
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
80300-AF009
HIPERMAX S for VAB 6MT
80300-AF009
HIPERMAX S for VAG VAG-D
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  
80230-AF009A
HIPERMAX MAX IV GT 20 SPEC for VAB * Discontinued.
6MT
80230-AF009A
HIPERMAX MAX IV GT 20 SPEC for VAG * Discontinued.
Vehicle height and longitudinal dimensions are estimated.
80230-AF009V
HIPERMAX MAX IV GT Spec-A for VAB * Discontinued.
*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 * Discontinued.
*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 * Discontinued.
*Bump rubber which is equivalent to 19N/mm(2kgf/mm)
spring rate is installed as well
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
70026-AF004
Cold Air Intake Full Kit For STI
Racing Suction (70020-AF108) & Cold Air Intake Box (70026-AF005)
70026-AF005
Cold Air Intake Kit For STI
Cold Air Intake Box only.
Required Racing Suction (70020-AF108) for installation.
70020-AF107 Racing Suction * Discontinued.
For STI
Requires ECU recalibration
In development Premium Suction  
70017-AF101
SUPER AIR FILTER  
70026-AF001
Carbon Suction Kit For STI
70026-AF003
Carbon Suction Kit For S4
70999-AF001 Air Intake Funnel * Discontinued.
71008-KF015B
SQV IV Black Edition For S4
71008-KF013VB
SQV IV Black Edition For STI
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 * Discontinued.
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  
15009-AK004
RADIATOR CAP S-type
108kPa (1.1kgf/cm2)
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