Sturdy boiis are Radiator ducting AND a quick disconnect Splitter Mount all in one.
-Words from a race engineer. "to make a car lighter you must make every part do as many jobs as it can"
Notes about bumpers
Sturdy boiis are built and intended to be used with a splitter, Nine Lives Danm Dam and 64" The Big Wang
this combination has ben CFD tested to increase overall downforce by 310% You can keep your OEM bumper if you wish to use the radiator ducting feature. The ducting will fit behind the stock bumper.
The Details
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More Downforce = Faster = Lower lap times
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Aluminum construction
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Front horns are set at 4.4* to hold your air dam, and make it legal for NASA racing.
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Quick disconnect *
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2 bolt opperation.
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can be replaced with a .25" pin
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for quick disconnect feature must be used with Nine Lives Danm Dam https://9livesracing.com/shop?olsPage=products%2Fthe-danm-dam-for-mazda-miata-aka-air-dam
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Radiator ducting included