Weapon R Secret Weapon Intake System

2004–2006, 2008–2015 Scion xB

Part #: 305-159-101

Overview

The Weapon R Secret Weapon Intake System is engineered to significantly enhance the air intake efficiency for Scion xB models from 2004 to 2006 and 2008 to 2015. Designed for enthusiasts seeking improved engine breathing and throttle response, this intake system increases the volume and velocity of air delivered to the engine. By optimizing airflow dynamics, it naturally feeds the engine up to three times more air compared to conventional factory intake systems, supporting better combustion and potential performance gains.

This intake is ideal for drivers who want a reliable, high-quality upgrade that combines performance with a polished, show-ready appearance. Whether you’re looking to improve daily driving responsiveness or lay the foundation for further modifications, the Secret Weapon Intake offers a proven solution.

Key Features

The Secret Weapon Intake System incorporates advanced airflow technology and premium materials to deliver superior performance and durability. Key features include:

• Dual air velocity profiles designed to optimize airflow speed and volume simultaneously
• High-quality 6061 aluminum intake pipe, precision-formed using automated CNC mandrel bending for smooth airflow and consistent fitment
• Polished finish providing a high-gloss, show-quality appearance that enhances engine bay aesthetics
• SW1 air filter featuring a tuned velocity stack that increases air velocity while reducing turbulence
• Open-pore, high-density reusable foam filter media for excellent filtration and airflow balance
• Engineered to feed the engine up to three times more air than stock intake systems
• Over 250 applications available across cars, trucks, and SUVs, demonstrating broad compatibility and proven design
• Backed by a 1 Million Mile Limited Warranty, underscoring the product’s durability and quality

Construction & Design

The intake pipe is crafted from premium 6061 aluminum, known for its strength, lightweight properties, and resistance to corrosion. The pipe is formed using an automated CNC mandrel bender, ensuring smooth, consistent bends that maintain optimal airflow without restrictions or turbulence. The polished finish not only adds visual appeal but also provides a protective layer against environmental wear.

The SW1 air filter is designed with a tuned velocity stack that enhances airflow speed while minimizing turbulence, allowing the engine to breathe more efficiently. The filter media is an open-pore, high-density foam that is reusable and easy to clean, providing long-lasting filtration performance without sacrificing airflow.

Performance & Sound

By increasing both the volume and velocity of air entering the engine, the Secret Weapon Intake System supports improved throttle response and potential power gains. The design reduces intake restrictions and turbulence, allowing the engine to operate more efficiently. Additionally, the intake produces a more aggressive induction sound, enhancing the driving experience without excessive noise.

Installation & Fitment

The Weapon R Secret Weapon Intake System is designed for direct fitment on 2004–2006 and 2008–2015 Scion xB models, requiring no major modifications for installation. The precision CNC-bent pipe and included hardware ensure a straightforward installation process that can typically be completed with basic hand tools. Detailed instructions are provided to guide users through each step, making it accessible for both professional installers and experienced enthusiasts.

What's Included

• 6061 aluminum intake pipe with polished finish
• SW1 high-flow air filter with tuned velocity stack
• Mounting hardware and clamps
• Installation instructions

Ideal For

This intake system is perfect for Scion xB owners looking to upgrade their factory air intake for improved engine breathing, enhanced throttle response, and a refined engine bay appearance. It suits daily drivers, weekend enthusiasts, and those planning further performance modifications who want a reliable, high-quality intake solution that delivers consistent results over the long term.

Weapon*R is a long-running import performance brand best known for intake systems and filtration products like their Secret Weapon and Dragon intake lines. Founded in the early ’90s with a focus on high-performance parts, Weapon*R products are aimed at enthusiasts who want improved airflow, aggressive induction sound, and bolt-on style upgrades for sport-compact platforms.