Weapon R Header

2011–2016 Scion tC (tC2)

Part #: 953-204-109

Overview

The Weapon R Header for the 2011–2016 Scion tC (tC2) is a high-performance street header engineered to enhance your vehicle's horsepower and torque output. Designed specifically for enthusiasts who enjoy weekend competition racing while maintaining daily drivability, this header offers a perfect balance of performance and reliability. Developed through extensive research and testing on Weapon R's Dynapack dyno, it delivers measurable gains that elevate your Scion tC’s engine efficiency and responsiveness.

While this header is optimized for off-road and racing applications, it is not legal for use on public highways in all states. For daily drivers who choose to install this header, it is highly recommended to pair it with a Check Engine Light (CEL) eliminator to prevent unwanted engine codes and maintain smooth operation.

Key Features

The Weapon R Header combines advanced engineering with quality materials to provide a significant performance upgrade. Key features include:

• Precision mandrel-bent tubing for improved exhaust flow and reduced backpressure
• Optimized header design to increase horsepower and torque across the RPM range
• Durable construction to withstand high temperatures and prolonged use
• Tested and tuned on Weapon R’s Dynapack dyno for verified performance gains
• Ideal for weekend competition racing and spirited street driving
• Designed specifically for the 2011–2016 Scion tC (tC2) for perfect fitment
• Includes provisions for factory O2 sensors to maintain engine management accuracy
• Not CARB or 50-state emissions legal; intended for off-road use only

Construction & Design

The Weapon R Header is crafted from high-quality stainless steel, ensuring excellent resistance to corrosion and heat. The mandrel-bent tubing maintains consistent diameter throughout bends, promoting smooth exhaust gas flow and minimizing turbulence. This precision engineering reduces exhaust restriction, allowing your engine to breathe more efficiently and produce more power.

Each header undergoes rigorous quality control and is designed to fit the Scion tC’s engine bay without requiring extensive modifications. The robust flange and collector design ensure a secure seal and compatibility with aftermarket exhaust systems.

Performance & Sound

By improving exhaust scavenging and reducing backpressure, the Weapon R Header enhances throttle response and increases overall engine output. Drivers will notice a more aggressive exhaust note that complements the sporty character of the Scion tC without being overly loud or intrusive. This header is engineered to deliver a balanced performance sound suitable for both street and track environments.

Installation & Fitment

Installation of the Weapon R Header is straightforward for experienced enthusiasts and professional mechanics. It is designed to bolt directly onto the 2011–2016 Scion tC (tC2) engine with minimal modifications required. However, due to its off-road designation, some tuning adjustments or a CEL eliminator may be necessary to prevent check engine light issues. Proper installation ensures optimal performance and longevity.

What's Included

• Weapon R Street Header for 2011–2016 Scion tC (tC2)
• Flanges and gaskets for installation
• Hardware kit for mounting
• Installation instructions

Ideal For

This header is ideal for Scion tC owners who participate in weekend racing events or track days and want to improve their vehicle’s power output without sacrificing daily drivability. It suits enthusiasts looking for a reliable, performance-oriented upgrade that enhances both engine efficiency and exhaust sound. Please note, it is not intended for vehicles requiring emissions compliance on public roads.

Emissions Note

This product is intended for off-road use only and is not legal for use on public highways in any state. It does not comply with CARB or EPA emissions regulations. Installation may trigger the check engine light; therefore, a CEL eliminator is highly recommended to maintain proper engine management and avoid diagnostic trouble codes.

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.