Perrin Front Mount Intercooler Boost Tube Kit Red 2015-2021 WRX | 2.25"-2.75" Diameter | Boost Tube Kit
Overview
The Perrin Front Mount Intercooler Boost Tube Kit is a precision-engineered upgrade designed specifically for the 2015-2021 Subaru WRX. This kit replaces the restrictive OEM boost tubes with larger diameter, smooth mandrel-bent aluminum tubing to optimize airflow between the turbocharger, front mount intercooler, and throttle body. It is ideal for WRX owners seeking to improve charge air volume and reduce pressure drop without extensive modifications or mandatory tuning.
Crafted with CNC mandrel bending, the boost tubes feature a stepped diameter design that transitions from 2.25 inches at the turbo outlet to 2.75 inches near the intercooler and throttle body. This design minimizes turbulence and ensures smooth airflow transitions, which are critical for maintaining consistent boost pressure and enhancing throttle response. The tubes are finished with a durable red powder coat that provides corrosion resistance and a clean, performance-oriented appearance under the hood.
Real-world benefits include a proven increase of 10 to 20+ wheel horsepower across various power levels due to improved charge air cooling and reduced restrictions. The kit maintains OEM clearance for easy installation and reliable operation without requiring ECU tuning, although additional gains can be unlocked with proper calibration. This makes it a practical and effective upgrade for Subaru WRX enthusiasts who value a balance of performance, reliability, and OEM+ fitment.
Features & Specifications
This Perrin Performance Front Mount Intercooler Boost Tube Kit is engineered for the 2015-2021 Subaru WRX and features stepped 2.25” to 2.75” diameter aluminum tubing. Constructed from lightweight CNC mandrel-bent aluminum, it delivers improved airflow and boost response for Subaru enthusiasts seeking enhanced intercooler efficiency and power gains.
-
Brand: Perrin Performance
-
Product: Front Mount Intercooler Boost Tube Kit Red
-
Part Number: PSP-ITR-437-3RD
-
Fitment: 2015-2021 Subaru WRX
-
Material: Aluminum
-
Finish: Powder Coated Red
-
Construction: CNC Mandrel Bent Tubing
-
Origin: Not Specified
-
Boost Tube Diameter: 2.25” (Turbo Outlet) to 2.75” (Intercooler/Throttle Body)
-
Power Gains: +10-20+ Wheel HP
-
Tuning Required: No (Recommended for Additional Gains)
Key Benefits
-
Performance: Increases airflow efficiency and reduces pressure drop for measurable horsepower gains.
-
Fitment: Designed specifically for 2015-2021 WRX with direct bolt-on installation and OEM clearance.
-
Durability: Powder coated aluminum tubing resists corrosion and maintains appearance over time.
-
Installation: Includes custom CNC-machined brackets and upgraded coolant and washer tanks for seamless routing.
-
Value: Provides significant power improvements without mandatory ECU tuning, making it accessible for stock setups.
-
Quality: Precision CNC mandrel bending ensures smooth airflow and reliable sealing at all boost levels.
What's Included
- 1× Perrin Front Mount Intercooler Boost Tube Kit Red
- 1× Perrin Coolant Overflow Tank (Powder Coated)
- 1× Perrin High Capacity Washer Fluid Tank (6061 Aluminum)
- 1× Set of CNC Machined Aluminum Direct Mount Brackets
- Installation instructions
Installation & Compatibility
The Perrin Boost Tube Kit offers a straightforward installation process with direct bolt-on brackets and upgraded coolant and washer tanks to accommodate the new routing. While the installation is generally DIY-friendly for those with moderate mechanical experience, professional installation is recommended to ensure proper fitment and sealing. No special tools beyond standard hand tools are required. This kit does not require ECU tuning to realize power gains, but additional tuning is recommended to maximize performance if other modifications are present.
-
Professional Installation: Recommended for best results
-
Modifications Required: None
-
Verify Compatibility: Confirm fitment for your specific 2015-2021 WRX model and trim level
Shop with confidence at Subimods—your Subaru parts specialists.
