Perrin Front Mount Intercooler Boost Tube Kit Black 2008-2014 WRX | 2.25"-2.75" Diameter | Aluminum Boost Tubes
Overview
The Perrin Front Mount Intercooler Boost Tube Kit is a precision-engineered upgrade designed specifically for the 2008-2014 Subaru WRX. This kit replaces the restrictive factory boost tubes with mandrel-bent aluminum piping that optimizes airflow from the turbocharger to the intercooler and throttle body. It’s ideal for WRX owners looking to improve charge air cooling efficiency and unlock additional power potential without extensive modifications or complex installation.
Built with a stepped diameter design, the boost tubes start at 2.25 inches at the turbo outlet and expand to 2.75 inches near the intercooler and throttle body. This sizing maximizes airflow capacity while maintaining a compact routing that avoids interference with OEM components. The tubes are CNC mandrel bent from lightweight aluminum and finished with a durable black powder coat, ensuring corrosion resistance and an OEM+ aesthetic. The kit also includes a new coolant overflow tank and a boxed steel intercooler support beam, enhancing both functionality and durability under boost conditions.
For Subaru WRX enthusiasts, this kit offers a reliable, bolt-on solution that improves turbo efficiency and power delivery. Dyno testing confirms gains of 10-20+ wheel horsepower without requiring ECU tuning, though additional gains are achievable with a proper tune. Beyond performance, the kit enhances engine bay appearance and provides superior intercooler support compared to stock components, making it a well-rounded upgrade for WRX owners.
Features & Specifications
This Perrin Front Mount Intercooler Boost Tube Kit is engineered for 2008-2014 Subaru WRX models and features stepped boost tube diameters from 2.25” to 2.75”. Constructed from CNC mandrel-bent aluminum tubing with a black powder coat finish, it delivers improved airflow and durability for Subaru enthusiasts seeking enhanced charge air cooling and power gains.
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Brand: Perrin Performance
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Product: Front Mount Intercooler Boost Tube Kit Black
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Part Number: PSP-ITR-436-3BK
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Fitment: 2008-2010 WRX, 2011-2014 WRX
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Material: Aluminum
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Finish: Black powder coat
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Construction: CNC mandrel bent tubing
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Origin: USA (Perrin Performance)
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Boost Tube Diameter: 2.25” (turbo outlet) to 2.75” (intercooler/throttle body)
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Turbo Compatibility: Fits stock WRX 2-bolt flange and STI tube-style outlet
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Included Components: Coolant overflow tank, intercooler support beam
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Power Gains: +10-20+ Wheel HP (dyno proven)
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Tuning Required: No (tuning recommended for additional gains)
Key Benefits
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Performance: Increased airflow reduces pressure drop, improving turbo efficiency and power output.
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Durability: CNC mandrel-bent aluminum tubes with powder coat resist corrosion and maintain strength under boost.
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Fitment: Designed for a smooth, short routing path that clears OEM components for easy installation and reliable operation.
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Compatibility: Includes adapters for both WRX and STI turbo outlets, ensuring broad application across WRX models.
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Support & Protection: Steel intercooler support beam offers superior crash protection compared to aluminum alternatives.
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Maintenance: New coolant overflow tank improves engine bay clearance and is finished for long-lasting protection.
What's Included
- 1× Perrin Front Mount Intercooler Boost Tube Kit (Black)
- 1× Perrin Coolant Overflow Tank (powder coated)
- 1× Perrin Intercooler Support Beam (boxed steel, powder coated)
- Turbo adapter fittings for WRX and STI turbo outlets
- Installation instructions
Installation & Compatibility
Installation of the Perrin FMIC Boost Tube Kit is moderately straightforward for enthusiasts with basic mechanical skills and common hand tools. The kit bolts directly onto the factory turbo and intercooler connections using included adapters, minimizing the need for modifications. Removal of OEM components is required to install the new coolant overflow tank and intercooler support beam, but detailed instructions are provided to facilitate the process. No ECU tuning is necessary to safely run the kit, though a custom tune is recommended to maximize power gains and optimize engine management.
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Professional Installation: Recommended for those unfamiliar with turbo plumbing
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Modifications Required: None beyond bolt-on installation
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Verify Compatibility: Confirm fitment for your specific WRX model year and turbo configuration
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