HKS Air Intake Duct - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

HKS Air Intake Duct - 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86Air Intake Duct for the 2013 2016 FR S and 2013 2020 BRZ The HKS Air Intake Duct for the 2013 2016 Scion FR S, 2013 2020 Subaru BRZ, and 2017 2019 Toyota 86 is a duct piece that improves the routing of intake air to the filter in existing intake setups. Where a full cold air intake replaces the entire intake path, the intake duct is a more targeted upgrade that improves air routing within the existing system layout. Directing cooler, outside air

Air Intake Duct for the 2013-2016 FR-S and 2013-2020 BRZ

The HKS Air Intake Duct for the 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ, and 2017-2019 Toyota 86 is a duct piece that improves the routing of intake air to the filter in existing intake setups. Where a full cold air intake replaces the entire intake path, the intake duct is a more targeted upgrade that improves air routing within the existing system layout. Directing cooler, outside air toward the intake rather than relying on the less-directed OEM routing.

Specs & Highlights

• Intake air routing improvement
• Directs cooler outside air toward the intake filter
• Works with OEM and select aftermarket intake systems
• Reduces intake air temperature versus undirected routing
• All hardware included
• Fitment: 2013-2016 Scion FR-S / 2013-2020 Subaru BRZ / 2017-2019 Toyota 86

12-22°C Reduction with Duct, Silicone-Reinforced Construction

The intake duct connects the front bumper air inlet area to the intake filter housing, providing a direct path from outside ambient air rather than relying on convective mixing in the engine bay. Documented intake air temperature reduction when the duct is combined with the HKS Racing Suction or Premium Suction is approximately 12–22°C under sustained driving conditions on a warm day, compared to the same intake system without the duct. The duct is constructed from flexible silicone-reinforced material that accommodates engine movement without cracking.

How Intake Ducting Addresses Underhood Heat Sources

Intake air temperature is a power-affecting variable on any naturally aspirated engine. The FA20's intake pulls air from the engine bay, which is considerably warmer than the outside air, particularly after extended driving or in hot ambient conditions. The intake duct improves the air source by directing outside air. Which can be 15-25 degrees Celsius cooler than underhood air, toward the intake pickup.

Most Effective Combined with an HKS Intake System

The duct is a supporting piece rather than a complete intake system. It is most effective when combined with a performance intake system rather than used with the completely stock airbox. The improvement in intake air temperature from properly ducted outside air is consistent and meaningful for an NA application.

The FT Breakdown

The air intake duct is the attention-to-detail part of an FA20 intake build. Combined with the HKS Racing Suction or Premium Suction, it provides a more complete cold air solution than the intake alone. For builds already running an aftermarket intake, the duct is the next logical step in optimizing the intake air temperature. The 12–22°C temperature reduction with the intake duct installed versus without it on the same intake system is a range that reflects real-world variability in ambient temperature and driving conditions. At the high end of that range — a hot day with a heat-soaked engine bay — the duct's contribution to consistent power output is substantial. The silicone-reinforced construction maintains its shape and seal through years of heat cycling in the engine bay.