Killer B Extreme Flow HARD Turbo Inlet With 84mm Coupler Speed Density WRX 02-14 / STI 04-21 | EJTI-84-SD

Vehicle Fitment

• 2002-2014 Subaru WRX
• 2007-2021 Subaru STI
• 2004-2013 Subaru Forester XT
• 2005-2009 Subaru Outback XT
• 2005-2009 Subaru Legacy GT

Maximize airflow and improve turbocharger efficiency with the Killer B Motorsport Extreme Flow Hard Turbo Inlet with 84mm Coupler. Designed specifically for EJ-powered Subaru applications utilizing speed density tuning, this premium cast aluminum turbo inlet eliminates the restrictions and reliability concerns associated with the factory plastic inlet while providing exceptional airflow for high-horsepower builds.

Unlike OEM plastic inlets that can crack over time or silicone alternatives that may deform under vacuum, the Killer B Extreme Flow Inlet is constructed from heat-treated cast aluminum for unmatched durability and consistent airflow. Its smooth, sweeping internal design minimizes turbulence and pressure drop, helping your turbocharger operate more efficiently while enhancing turbo induction sound.

Designed for easier installation, this inlet does not require intake manifold removal, making it a practical upgrade for both street and race applications.

Features & Benefits

• Designed and manufactured in the USA
• Speed Density Version for speed density tuning setups
• Heat-treated cast aluminum construction
• Black powder-coated finish for durability and corrosion resistance
• Includes 84mm compressor inlet coupler
• Increased airflow capacity compared to OEM and silicone inlets
• Smooth internal design reduces turbulence and pressure drop
• Will not collapse under high airflow demands
• Eliminates common cracking issues associated with factory plastic inlets
• Enhances turbocharger induction sound
• Includes fittings for OEM and aftermarket vacuum configurations
• No intake manifold removal required for installation
• Ideal for high-performance street and motorsport applications

Why Upgrade to a Hard Turbo Inlet?

The factory EJ turbo inlet is a known restriction point and can become brittle with age, leading to cracks, boost leaks, and performance issues. The Killer B Extreme Flow Hard Turbo Inlet provides a durable, high-flow solution that improves airflow to the turbocharger while eliminating common OEM failure points. Its cast aluminum construction ensures consistent performance under extreme conditions, making it an excellent upgrade for modified and high-boost applications.

Construction Details

• Precision cast aluminum body
• Heat-treated for added strength and durability
• Large-radius bends for improved airflow characteristics
• Black powder-coated finish
• Includes 84mm turbo compressor coupler
• Compatible with OEM and aftermarket vacuum routing options

Perfect For

• High-horsepower EJ builds
• Speed density tuning setups
• Turbocharger upgrades
• Performance street vehicles
• Track and motorsport applications
• Replacing cracked or failing OEM turbo inlets