Perrin Front Mount Intercooler Boost Tube Kit - Red - 2008-2014 STI

Perrin Front Mount Intercooler Boost Tube Kit Red 2008-2014 STI | 2.25"-2.75" Diameter | Aluminum Boost Tubes

Overview

The Perrin Front Mount Intercooler Boost Tube Kit is designed specifically for the 2008-2014 Subaru WRX STI, delivering improved airflow and enhanced charge air cooling. This kit replaces the restrictive OEM boost tubes with mandrel-bent aluminum tubing, increasing diameter from 2.25 inches at the turbo outlet to 2.75 inches near the throttle body. It’s ideal for STI owners looking to maximize their intercooler efficiency and support higher power levels without compromising reliability or fitment.

Engineered with precision, the boost tubes feature smooth, mandrel bends that optimize airflow while maintaining clearance around factory components. The oversized, beaded ends ensure secure hose connections at any boost level, preventing leaks and pressure loss. The kit also includes a powder-coated red finish for durability and visual appeal, along with a new coolant overflow tank to provide necessary clearance for the upgraded routing. Perrin’s focus on quality materials and thoughtful design makes this kit stand out as a reliable upgrade for Subaru enthusiasts.

By reducing pressure drop and improving charge air cooling, this boost tube kit supports power gains of 10 to 20+ wheel horsepower across various tuning stages. Notably, the kit is designed to work safely without requiring ECU recalibration, allowing for a straightforward power increase out of the box. For those pursuing further performance, additional gains are achievable with proper tuning tailored to all vehicle modifications. This combination of performance, fitment, and ease of installation makes the Perrin boost tube kit a practical upgrade for WRX STI owners seeking to enhance their turbo system’s efficiency.

Features & Specifications

This Perrin Front Mount Intercooler Boost Tube Kit is engineered for 2008-2014 Subaru WRX STI models and features smooth mandrel-bent aluminum tubing with diameters ranging from 2.25” to 2.75”. Constructed from lightweight aluminum, it delivers improved airflow and durability for Subaru enthusiasts seeking enhanced turbo efficiency and power gains.

• Brand: Perrin Performance
• Product: Front Mount Intercooler Boost Tube Kit Red
• Part Number: PSP-ITR-430-3RD
• Fitment: 2008-2010 Subaru WRX STI, 2011-2014 Subaru WRX STI
• Material: Aluminum
• Finish: Powder Coated Red
• Construction: CNC Mandrel Bent Tubing with Beaded Ends
• Origin: USA (Perrin Performance)
• Boost Tube Diameter: 2.25” (Turbo Outlet) to 2.75” (Throttle Body)
• Included Components: Coolant Overflow Tank, Intercooler Support Beam
• Power Gains: +10-20+ Wheel HP
• Tuning Required: No (Recommended for further gains)

Key Benefits

• Performance: Increased airflow reduces pressure drop, supporting significant horsepower gains without ECU recalibration.
• Durability: Lightweight aluminum tubing with powder-coated finish resists corrosion and maintains strength under boost.
• Fitment: Designed specifically for 2008-2014 WRX STI models, ensuring OEM-level clearance and easy installation.
• Reliability: Oversized, beaded tube ends secure hoses firmly to prevent boost leaks at all pressure levels.
• Cooling Efficiency: Includes a new coolant overflow tank to maintain proper coolant system function with upgraded routing.
• Value: Supports power gains immediately with no mandatory tuning, while allowing further optimization with ECU recalibration.

What's Included

• 1× Perrin Front Mount Intercooler Boost Tube Kit (Red)
• 1× Perrin Coolant Overflow Tank (Powder Coated)
• 1× Perrin Intercooler Support Beam (Powder Coated Black)
• All necessary mounting hardware
• Installation instructions