• NA/NB MX-5 Miata Flat Underbody Kit (1990-2005)
    NA/NB MX-5 Miata Flat Underbody Kit (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Flat Underbody Kit (1990-2005)

    Prices are in USD and include shipping within the lower 48 States and Canada. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.If you look under a pre-2010 car, it’s very...
    $399.79
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  • NA/NB Miata Ultimate Aero Kit
    NA/NB Miata Ultimate Aero Kit

    R Theory Motorsports

    NA/NB Miata Ultimate Aero Kit

    Prices are in USD. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.Do it once and do it right. We put together a kit featuring all the killer aerodynamic parts that we...
    $3,506.69 - $3,738.09
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  • License Plate Quick Release Bracket - PQR (Universal)
    License Plate Quick Release Bracket - PQR (Universal)

    R Theory Motorsports

    License Plate Quick Release Bracket - PQR (Universal)

    Prices are in USD and include shipping within the lower 48 States and Canada. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.You’ve seen it here first. A License Plate...
    $83.99 - $172.03
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  • NA/NB MX-5 Miata Front Splitter Mounts (1990-2005)
    NA/NB MX-5 Miata Front Splitter Mounts (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Front Splitter Mounts (1990-2005)

    Prices are in USD. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.This is for only our NA/NB Miata Mx5 Front Splitter Mounts. You can find the entire Front Splitter Kit...
    $249.99
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  • NA/NB MX-5 Miata Chassis Mounted Front Splitter Kit (1990-2005)
    NA/NB MX-5 Miata Chassis Mounted Front Splitter Kit (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Chassis Mounted Front Splitter Kit (1990-2005)

    Prices are in USD. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.For years we have been making the most popular Rear Diffuser kits for Miatas, but we’ve always been...
    $395.99 - $429.95
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  • NA/NB MX-5 Miata Hood Vents + Fender Vent Combo (1990-2005)
    NA/NB MX-5 Miata Hood Vents + Fender Vent Combo (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Hood Vents + Fender Vent Combo (1990-2005)

    *Prices are in USD, includes shipping within the Lower 48 States and Canada. For international shipping please visit our International Shipping page for a shipping quotation.To get your vents powder coated, click here!For those who really need to vent,...
    $369.99
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  • NA/NB MX-5 Miata Aluminum Fender Vents (1990-2005)
    NA/NB MX-5 Miata Aluminum Fender Vents (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Aluminum Fender Vents (1990-2005)

    *Prices are in USD, includes shipping within the Lower 48 States and Canada. For international shipping please visit our International Shipping page for a shipping quotation.To get your vents powder coated, click here!To save a few bucks, group these...
    $191.99
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  • NA/NB MX-5 Miata Carbon Fiber Mirror Kit (1990-2005)
    NA/NB MX-5 Miata Carbon Fiber Mirror Kit (1990-2005)

    R Theory Motorsports

    NA/NB MX-5 Miata Carbon Fiber Mirror Kit (1990-2005)

    Prices are in USD. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation. If you would like to purchase the APR Mirrors without Miata specific mounts, send us an email for...
    $90.99 - $358.16
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  • NA/NB MX-5 Miata V3 Rear Diffuser Kit (1990-2005)
    NA/NB MX-5 Miata V3 Rear Diffuser Kit (1990-2005)

    NA/NB MX-5 Miata V3 Rear Diffuser Kit (1990-2005)

    *Prices are in USD, includes shipping within the Lower 48 States and Canada. For international shipping please visit our International Shipping page for a shipping quotation.It's here folks, the R Theory Motorsports V3 Rear Diffuser has landed. The V3...
    $348.75 - $417.75
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  • NB MX-5 Miata Aluminum Hood Vents (1998-2005)
    NB MX-5 Miata Aluminum Hood Vents (1998-2005)

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

    *Prices are in USD, includes shipping within the Lower 48 States and Canada. For international shipping please visit our International Shipping page for a shipping quotation.To get your vents powder coated, click here!To save a few bucks, group these...
    $175.99 - $210.99
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  • NA/NB MX-5 Miata V2 Rear Diffuser Kit (1990-2005)
    NA/NB MX-5 Miata V2 Rear Diffuser Kit (1990-2005)

    NA/NB MX-5 Miata V2 Rear Diffuser Kit (1990-2005)

    Prices are in USD. All mounting hardware is included. For international shipping please visit our International Shipping page for a shipping quotation.Lo and behold the much awaited V2 Miata Rear Diffuser! R Theory designed the V2 diffuser to be wider,...
    $399.99 - $449.99
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