Perrin Performance Boost Tube Box w/ Red Boost Tubes and Black Couplers 2015-2021 WRX | 2.25" Aluminum Tubing | Boost Tube Kit
Overview
The Perrin Performance Boost Tube Box is a precision-engineered upgrade designed specifically for the 2015-2021 Subaru WRX equipped with a Perrin front mount intercooler core. This kit replaces the restrictive OEM boost tubes with CNC mandrel bent aluminum tubing, featuring a smooth 2.25" diameter for optimal airflow. The design focuses on reducing weight and improving boost response by providing a cleaner, obstruction-free path for the charged air traveling between the turbo and intercooler. It’s ideal for Subaru enthusiasts looking to maximize their turbo system’s efficiency and power potential while maintaining reliable fitment and durability.
Perrin’s engineering approach prioritizes smooth airflow and practical routing within the engine bay. The boost tubes are carefully routed to take the shortest, most direct path from the turbo to the intercooler, minimizing pressure drop and turbulence. Oversized beaded ends on each tube ensure secure clamping and airtight seals with the included black couplers. Additionally, the kit integrates seamlessly with Perrin’s custom washer fluid and coolant overflow tanks, which are designed to clear space for the boost tubes while maintaining OEM-level quality and appearance with durable black powder-coated finishes.
For Subaru WRX owners, this boost tube kit delivers tangible improvements in throttle response and turbo spool characteristics by reducing restrictions in the intake charge path. The 2.25" tubing diameter is carefully chosen to support power levels beyond most stock turbo capabilities without unnecessary size increases that could hurt spool time. This upgrade complements other Perrin intercooler components and is a practical step for anyone pursuing reliable, efficient forced induction performance on their WRX.
Features & Specifications
This Perrin Performance Boost Tube Box is engineered for 2015-2021 Subaru WRX models with Perrin front mount intercoolers and features 2.25" CNC mandrel bent aluminum tubing. Constructed from lightweight aluminum, it delivers improved airflow and boost response for Subaru enthusiasts seeking enhanced turbo efficiency and reliable fitment.
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Brand: Perrin Performance
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Product: Boost Tube Box w/ Red Boost Tubes and Black Couplers
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Part Number: PSP-ITR-437-2RD/BK
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Fitment: 2015-2021 Subaru WRX (with Perrin front mount intercooler core)
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Material: Aluminum
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Finish: Red powder coat (boost tubes), Black powder coat (couplers and tanks)
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Construction: CNC mandrel bent tubing with oversized beaded ends
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Origin: USA (Perrin Performance)
Key Benefits
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Performance: Larger 2.25" tubing reduces airflow restrictions for improved boost response and potential power gains.
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Fitment: Designed specifically for 2015-2021 WRX with Perrin front mount intercooler, ensuring seamless integration and clearance.
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Durability: CNC mandrel bent aluminum tubing with powder-coated finish resists corrosion and heat exposure in the engine bay.
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Reliability: Oversized beaded tube ends and quality couplers provide secure, leak-free connections under boost pressure.
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Weight Savings: Aluminum construction reduces weight compared to OEM plastic tubes, contributing to overall vehicle efficiency.
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OEM+ Quality: Includes matching powder-coated washer fluid and coolant overflow tanks for a clean, factory-inspired engine bay appearance.
What's Included
- 1× Perrin Performance Boost Tube Box with Red Boost Tubes
- Black silicone couplers for all connections
- Perrin Washer Fluid Tank (black powder-coated)
- Perrin Coolant Overflow Tank (black textured powder-coated)
- Installation instructions
Installation & Compatibility
Installation of the Perrin Boost Tube Box is moderately straightforward for enthusiasts with basic mechanical skills and common hand tools. The kit is a direct replacement for the OEM boost tubes but requires removal of the factory tubes and installation of the included custom washer fluid and coolant overflow tanks to ensure proper clearance. No major modifications are necessary, but careful attention to hose clamp tightness is essential to prevent boost leaks. This kit is only compatible with Perrin front mount intercooler cores and will not fit other intercooler setups.
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Professional Installation: Recommended for best results, but DIY-friendly for experienced enthusiasts
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Modifications Required: None beyond included tank replacements
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Verify Compatibility: Confirm your vehicle is a 2015-2021 Subaru WRX with Perrin front mount intercooler core before purchasing
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