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Weapon-R Secret Weapon Intake Kit for Honda Civic Si 2006-2009, Performance Upgrade - 301-158-101

Weapon-R Secret Weapon Intake Kit Honda Civic Si 2006-2009 for 2006-2009 Honda Civic 301-158-101 | Vivid Racing

Weapon-R Secret Weapon Intake Kit (Part #301-158-101)

The Weapon-R Secret Weapon Intake Kit is engineered to enhance air intake efficiency for the Honda Civic Si models from 2006 to 2009. This intake system is designed with a focus on optimizing airflow, utilizing two distinct air velocity profiles. One profile operates at higher speeds, which significantly boosts the volume of air entering the engine, providing a substantial increase over conventional intake systems.

Construction and Features

The intake pipe is crafted from high-grade 6061 aluminum, precision bent using Weapon-R's Automated CNC mandrel bender, ensuring a perfect fit and optimal airflow. The polished finish not only adds a sleek aesthetic to your engine bay but also contributes to its durability.

  • Material: 6061 Aluminum
  • Finish: Polished
  • Filter Type: SW1 Air filter with tuned velocity stack
  • Airflow Improvement: Increases air volume and speed, delivering up to 3x more air than stock intakes

Installation Notes

Installation of the Weapon-R Secret Weapon Intake is straightforward, designed for direct fitment on the specified Honda Civic Si models. Ensure all connections are secure and follow the provided instructions for optimal performance.

Warranty

This intake kit comes with a 1 Million Mile Limited Warranty, showcasing Weapon-R's commitment to quality and performance. The open pore high-density reusable foam filter ensures longevity and ease of maintenance.

Fitment

  • Honda Civic Si 2006-2009

Note: Product images are for marketing purposes only; the actual product may vary slightly in appearance.

Other Part Numbers:
Weapon-R #wpn301-158-101

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Weapon-R Logo

What is Weapon-R?

Weapon-R is a well-known manufacturer of aftermarket accessories for a number of popular makes and models. It is focused on performance products that will improve the power of your vehicle which, in turn, make the car an even greater joy to drive. Weapon-R parts are, oftentimes, considered to be some of the most unique, highest performing, and best looking in their class. With more than a decade of experience in building go-fast parts for speed demons, Weapon-R has garnered a respectable name of itself. Its products are popular among enthusiasts who crave effective performance without breaking the bank.

What Does Weapon-R Offer?

As aforementioned, Weapon-R is primarily known for its quality, high-performance intakes. At the forefront of its inventory is the Weapon-R cold air intake. The proper air intake will allow your engine to breathe better and get a lot more air at better temperatures. This, in turn, provides better fuel economy while also improving vehicle acceleration. Each individual Weapon-R part is built with a specific vehicle in mind and crafted from only the highest quality materials to ensure longevity and durability.

While Weapon-R is best known for its air intake kits, the brand has been building other performance-enhancing parts for many years. Its racing headers are a popular close second and have been well-received for some time now as an effective means to increase exhaust flow and provide notable horsepower and torque gains at an affordable price. 

Weapon-R’s lineup also includes intercooler pipe kits for an existing turbo and intercooler. This will help guarantee your turbo is receiving the coolest air possible, while attractive wider aluminum pipes allow for higher airflow.

Find Weapon-R Parts at Vivid Racing

While your vehicle may already be fun to drive and have loads of power, that doesn’t mean you shouldn’t or can’t improve it. Vivid Racing has what you need to heighten that performance with a wide selection of quality parts from Weapon-R. We have everything from catted downpipes, headers, and cold air intakes to short ram intakes, intake manifolds, and intercooler pipes. If you cannot find a particular item above or have any questions, please call our specialized parts team at (480) 966-3040. 

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Things
Sale price None
Wholesale price $278.01
Shipping Weight: 9.00
Length: 27
Width: 8
Height: 8
Product Added At Tuesday 27 December, 2022
Product Modified At Tuesday 03 June, 2025
Imported By ETLOverride
Last Edited By renaliza.enriquez@gmail.com
View In Admin

Emissions Info
Carb Approved Yes
Carb Number D-489-3
Epa Status Compliant
Prop65 Unknown
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
Weapon R $235.60 $346.47 ? $294.50 ? 2025-06-03 19:03:16


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