Weapon-R 302-131-109 Secret Weapon Stealth Series Cold Air Intake

The Weapon-R 302-131-109 Secret Weapon Intake – Stealth Series is a high-performance aftermarket air intake system engineered to significantly increase air volume and velocity delivered to the engine. Unlike conventional intake systems, this design leverages the Coanda effect and Bernoulli's principle to generate two distinct air velocity profiles within the intake tube — one stream moving at a higher speed than the other — resulting in up to 3x more air mass reaching the engine compared to a stock intake setup.

The intake pipe is precision-formed from aerospace-grade 6061 aluminum using an automated CNC mandrel bending process, ensuring consistent wall thickness, structural rigidity, and smooth internal airflow. The Stealth Black finish provides an aggressive, blacked-out appearance in the engine bay while offering corrosion resistance.

Key Features:

• Patented dual-velocity airflow technology (US Patent #7,263,961B2)
• CNC mandrel-bent 6061 aluminum intake pipe in Stealth Black finish
• SW1 high-performance air filter with tuned velocity stack to increase velocity and reduce turbulence
• 1-inch thick open-pore, high-density reusable polyurethane foam filter element for superior filtration with minimal airflow restriction
• Backed by Weapon-R's 1 Million Mile Limited Warranty
• Reusable and washable filter — no replacement filters required

The Secret Weapon Intake's innovative design has earned a US patent, validating its physics-based approach to performance air intake engineering. It is a straightforward upgrade for enthusiasts seeking measurable gains in throttle response and engine breathing efficiency.