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R Theory NB MX-5 Miata Aluminum Hood Vents (1998-2005)

R Theory NB MX-5 Miata Aluminum Hood Vents (1998-2005)

Keep your track car cool, and looking cool with R Theory Motorsports hood vents!

Just cut your hood using the supplied stencil, and drop these vents right in. These vents are designed around the hood frame on the NB Miata. All of the hood frame is left uncut, meaning nearly all hood rigidity is maintained. Majority of other vents on the market force you to cut parts of the frame. The vents are sold and shipped flat, with a raw aluminum finish that is ready for primer and paint, powder coat, or however you want to coat them. Just bend the fins open and get coating! We can also powder coat them for you with our powder coating service.

Benefits of running a vented hood:


When driving, air passes through your radiator but has nowhere to go. The hot air accumulates under your hood which will raise under hood temperatures in a situation where you're pushing the engine to it's limits. As a result, your coolant temperatures will get too hot. That means you have to take a cool down lap and that V6 Mustang you were chasing on the track will get away.


Putting vents in your hood allows the pressure that would have built up under the hood to bleed out. Less stress on your hood latches at high racetrack speeds, less chances of them breaking. Hey, it does happen.


Less lift over your front end = better grip over your front tires!


Need I say more?

3 panel vs 5 panel

We sell the vents with the option of purchasing the forward 3 panels only, or you can opt to purchase the full 5 panel kit. If you are on a budget the 3 panel kit will do a good job of evacuating the hot radiator air. Although with our testing, we found the full 5 panel kit does an even better job since the two rear panels are positioned in a lower air pressure region. Check out our youtube video of the hood vent testing here!

4 Panel Kit, newly added for 2021!

We commonly get asked if we sell only the outside 4 vents in the NB kit. So we decided to add that option to the hood vent kit. Some people choose to run only the outside 4 vents due to looks. Some people with LS swaps cannot use the center vent because it will interfere with their Corvette Ram Air Intake. If you are not using the Corvette Ram Air Intake with your LS Swap, the center vent in the 5 panel kit will fit just fine.

What's included in the kit?

The kit includes:

-3 panel. 4 panel, or 5 panel aluminum vents according to your order

-1/8" Rivets

-Vent Templates

*The rubber trim around the vents are sold separately.* You only need the rubber trim if you’re mounting your vents on the underside of the hood, not when you’re mounting the vents on the top side. You can use any rubber edge trim that is designed with a 1/16” inner dimension. We recommend McMaster Part Number 8507K15. You will need around 11.5 feet of rubber trim. We recommend purchasing a few extra feet to have some extra incase you make mistakes.

    PriceFrom C$237.84
    Excluding GST/HST
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