Overview
HKS Racing Suction Cold Air Intake System (70026-AF005)
Elevate your Subaru WRX or STI (2015-2021) performance with the HKS Racing Suction Cold Air Intake System. This highly effective intake system is engineered to enhance the flow of cold, oxygen-rich air to your engine, ensuring optimal performance on the road or track.
Key Features
- Exclusive Design: Specifically crafted as an upgrade for the HKS Racing Suction, this system separates the engine compartment from the air cleaner, allowing a continuous supply of fresh air for stable performance.
- Premium Materials: The cleaner box cover and duct cover are made from carbon fiber utilizing the vacuum infusion method. This process ensures a lightweight yet strong construction, comparable to the autoclave method. The 3k twill weave adds a stylish touch to your engine bay.
- Handcrafted Quality: The cleaner box is made from fiberglass, meticulously crafted by skilled artisans using the hand layup technique, ensuring durability and a perfect fit.
- Stunning Aesthetics: The combination of matte carbon and sleek black creates an eye-catching look that gives your engine bay an exotic car vibe.
- Performance Sound: Enjoy the exhilarating “open” sports sound of air rushing into the intake without compromising on performance.
- Efficient Temperature Control: Tested using WLTC mode on a chassis dynamometer, this system maintains a lower intake air temperature compared to stock air cleaners, regardless of environmental conditions.
- Enhanced Turbo Performance: The cold air intake supplies cooler air to the turbocharger, significantly boosting overall engine performance.
Fitment
- Subaru WRX | STI (2015-2021)
Important Note
- This product includes the Cold Air Intake Box only. The HKS Racing Suction (70020-AF108) is required for installation.
Customer Feedback
Many Subaru enthusiasts have praised the noticeable difference in airflow and engine response after installing the 70026-AF005. Users appreciate how it maintains a cooler intake temperature, resulting in improved turbo efficiency and an exhilarating sound that enhances their driving experience.
Other Part Numbers:
HKS #hks70026-AF005
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Fitment
|
Make Vehicle |
Model | Year |
|---|---|---|
|
2015-2021 Subaru STI |
STI | 2015-2021 |
About Brand

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.
Warranty
Warranty for Exhaust System
HKS provides a warranty to the original purchaser of HKS exhaust systems against defects in materials and workmanship for a period of one year. The warranty applies only for vehicle specific exhaust systems. Other products such as metal catalyzers, front pipes, exhaust manifolds, and center pipes are not covered.

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