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.
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LEGAMAX Sports
The quad exhaust for the WRX S4 is designed to reduce exhaust pressure while delivering an impressive sports sound that will leave you excited.
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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! -
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
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Hi-Power SPEC-L II
Weight reduction, low exhaust pressure, improved drivability and exhaust efficiency.
for VAFmore information
for VAGmore information
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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 informationfor VAB
(Single)more informationfor VAGmore information
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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
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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. -
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. -
Metal Catalyzer
Engine Response Improvement & Smooth Acceleration to High Speed
Improved exhaust efficiency provides more fun to drive.
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HIPERMAX R
The fun to drive at will and the balance can be adapted from circuit to winding road.
Reised Driving-Comfort, "Ultimate All-Rounder"for VABmore information
for VAGmore information
for VAFmore information
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HIPERMAX S (Front Upper Mount Pillow ball type)
Another type of HIPERMAX S that employs the pillow ball spherical bearing at the front upper mount has been newly added.
for VABmore information
for VAGmore information
for VAFmore information
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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
for VBH (with SEC)more information
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MAX IV GT
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
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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
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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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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
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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/VABmore informationfor WRX
S4/VAGmore information -
POWER EDITOR
GT III Turbine" is a new generation of turbo combining MHI brand CHRA with HKS original housings designed from the long term know-how HKS has accumulated over many years.
for WRX STI/VABmore information
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GTIII SPORTS TURBINE KIT
Power Editor is the boost controller that enables the boost pressure increase of the vehicles equipped with electric actuators.
for WRX S4(VBH)more information
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OIL COOLER KIT BLACK
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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INJECTOR UPGRADE KIT
High-capacity injectors for the EJ20.
Compared to the previous 800cc (Purple) injectors, the new injector performance has been improved by shorting the invalid injection time.
(Voltage 14V and Fuel Pressure 300 kPa Previous 800 cc: 1450 μsec >>> New 750 cc: 1030 μsec)for WRT STI/VABmore information
HKS parts for SUBARU WRX STI [VAB] / S4 [VAG]
Code No. | Product | Remark |
EXHAUST | ||
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31021-AF026 | LEGAMAX Sports | For S4 |
31021-BF001 | LEGAMAX Premium | For STI |
31021-AF024 | LEGAMAX Premium | For S4 Main pipe only. Compatible with 3BA-VAG made after Aug 2020. Not compatible with tS, STI Sport #. |
31019-AF130 | Hi-Power SPEC-L II | For S4 Tail cover size:φ94 L=48, 2 pcs needed Includes Main pipe and Center pipe. |
31019-AF130 | Hi-Power SPEC-L II | For STI 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 |
31006-BF001 | Hi-Power Muffler | |
31029-AF011 | Super Turbo Muffler (Center+Main) | For STI 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 S4 Compatible with 3BA-VAG made after Aug 2020. |
31029-AF013 | Super Turbo Muffler | For STI 86dB at combination use of 33005-AF014. Compatible with S207, S208, and TYPE RA-R. |
31029-AF012 | Super Turbo Muffler | For S4 * Silver color exhaust tip. (not burnt blue) Compatible with 3BA-VAG made after Aug 2020. |
31030-AF002 | Super Turbo Muffler Ti | For STI Compatible with S207, S208, and TYPE RA-R. Tail with HKS logo. Compatible with STI rear side under spoiler or STI rear under spoiler.
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31030-AF002 | Super Turbo Muffler Ti | For S4 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. |
33005-AF014 | Metal Catalyzer | For STI For 6MT. Front pipe included. |
33005-AF019 | Metal Catalyzer | For S4 Compatible with 3BA-VAG made after Aug 2020. Stock weight:4.1kg→HKS:3.6kg |
In development | Exhaust & ECU Package | Metal Catalyzer + Flash Editor |
SUSPENSION | ||
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80310-AF003 | HIPERMAX R | For S4 |
80310-AF003 | HIPERMAX R | For STI |
80310-AF003 | HIPERMAX R | For STI (VAF) |
80300-AF009P | HIPERMAX S Front Upper Mount Pillow ball type |
For S4 |
80300-AF009P | HIPERMAX S Front Upper Mount Pillow ball type |
For STI 6MT |
80300-AF009P | HIPERMAX S Front Upper Mount Pillow ball type |
For STI (VAF) 6MT |
80300-AF009 | HIPERMAX S | For STI 6MT |
80300-AF010C | HIPERMAX S With Suspension Error Canceler |
For S4 (VBH) |
80300-AF009 | HIPERMAX S for VAG | For S4 VAG-D |
80230-AF008 | HIPERMAX MAX IV GT | For S4 |
80230-AF008 | HIPERMAX MAX IV GT | For VAF |
80260-AF001 | HIPERMAX G | For STI |
80260-AF002 | HIPERMAX G | For S4 |
INTAKE/BLOW OFF | ||
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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 |
70017-AF102 | SUPER AIR FILTER | For S4 |
70017-AF101 | SUPER AIR FILTER | For STI |
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. |
70026-AF001 | Carbon Suction Kit | For STI |
70026-AF003 | Carbon Suction Kit | For S4 |
71008-KF015B | SQV IV Black Edition | For S4 |
71008-KF013VB | SQV IV Black Edition | For STI |
71008-AF015 | SQV IV | For S4 |
71008-AF013 | SQV IV | For STI |
71002-AF002 | SQV Return Kit | For STI |
71008-AF013V | SQVⅣ+Return Set | For STI |
ELECTRONICS | ||
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42018-AF003 | POWER EDITOR | For S4 (VBH) |
44009-AK001 | OB-LINK | *Only for Android devices |
TURBO&COOLING | ||
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11004-AF013 | GT III RS SPORTS TURBINE KIT | For STI with enhanced actuator |
15004-AF111 | OIL COOLER KIT BLACK | For STI Time Required: 6 hours E/G Oil Reguired: 5.5l S type Intercooler, #10 Hose size, Aluminum Air guide. EJ20 Only. |
15004-AF011 | OIL COOLER KIT | * To be discontinued. For STI Time Required: 6 hours E/G Oil Reguired: 5.5l S type Intercooler, #10 Hose size, Aluminum Air guide. EJ20 Only. |
ENGINE | ||
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24996-AK035 | FINE TUNE V-BELT 6PK1905 | For S4 |
FUEL | ||
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14002-AF003 | INJECTOR UPGRADE KIT | For STI |
14007-AF003 | FUEL UPGRADE KIT | For STI |
POWER TRAIN | ||
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26010-AF001 | LA CLUTCH | For STI |
26011-AF001 | LA CLUTCH TWIN | For STI |
OIL & OIL FILTER | ||
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52009-AK005 | OIL FILTER | |
24003-AK002 | Billet Oil Filler Cap | |
15009-AK004 | RADIATOR CAP | S-type 108kPa (1.1kgf/cm2) |
PLUG | ||
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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 |
OTHERS | ||
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51007-AK402 | HKS FLOOR MAT | For S4 Includes 2 pcs for the front. |
51007-AK402 | HKS FLOOR MAT | For STI Includes 2 pcs for the front. |