Weapon R 302-113-101 Secret Weapon Intake 1994-2004 Mazda Miata MX-5 1.8L DOHC

Vehicle Fitment

• 1994-2004 Mazda Miata / MX-5 (NA, All Trims, 1.8L DOHC, RWD)
• 1998-2004 Mazda MX-5 Miata (NB, All Trims, 1.8L DOHC, RWD)

Fitment Notes

• Fits all 1994-2004 Mazda Miata and MX-5 models equipped with the 1.8L DOHC engine, spanning both the NA (1994-1997) and NB (1998-2004) generations.
• Does not fit the 1990-1993 Miata 1.6L - see part number 302-112-101 for that application.
• Intake pipe comes in Polished finish only. Professional installation is recommended.
• Not CARB exempt - not legal for use on pollution-controlled vehicles in California. Intended for off-road or competition use only.

Features

• Patented dual-velocity airflow design (US Patent #7,263,961B2) delivers up to 3x more air than the factory intake
• Intake pipe CNC mandrel-bent from 6061 aluminum and polished to a high show-quality finish
• SW1 tuned velocity stack air filter reduces turbulence and increases incoming air velocity
• 1-inch thick open-pore high-density polyurethane foam filter element - reusable and washable
• Leverages the Coanda effect and Bernoulli's principle to create two distinct air velocity profiles within the intake pipe
• Improves throttle response and engine sound over the stock airbox
• Backed by Weapon R's 1 Million Mile Limited Warranty

Specifications

• Part Number: 302-113-101
• Intake Pipe Material: 6061 Aluminum
• Intake Pipe Finish: Polished (only available finish)
• Filter Type: SW1 Tuned Velocity Stack with 1 in. Open-Pore Polyurethane Foam
• CARB Status: Not Exempt - Not Legal for Sale in California
• Patent: US #7,263,961B2
• Warranty: 1 Million Mile Limited
• Fitment Type: Vehicle-Specific

Included Components

• 1x CNC Mandrel-Bent 6061 Aluminum Intake Pipe (Polished)
• 1x SW1 Tuned Velocity Stack Air Filter with Reusable Polyurethane Foam Element
• 1x Vehicle-Specific Hardware and Mounting Kit

Product Description

The Weapon R 302-113-101 is the Secret Weapon intake system engineered specifically for the 1994-2004 Mazda Miata and MX-5, covering both the NA and NB generations with the 1.8L DOHC engine. Using the Coanda effect and Bernoulli's principle, the patented dual-velocity design creates two separate airflow profiles within the intake pipe - delivering significantly more air mass to the engine than the stock airbox while improving throttle response and intake sound.

The polished 6061 aluminum intake pipe is CNC mandrel-bent for precise fitment and optimal flow, and the SW1 velocity stack filter's open-pore foam element is fully washable and reusable for long-term maintenance savings. This intake is not CARB exempt and is intended for off-road or competition use only - it cannot be sold to California residents for use on public roads. Miata owners seeking the 1.6L NA application should reference part number 302-112-101.