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Butterfly Plates

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You can certainly see why it might improve the airflow path into the engine over our factory throttle body. Unlike cheesy aluminum castings, the machined billet-aluminum almost guarantees no cracks or pit holes in the body of the TB. All surfaces are coated with a clear sulfuric anodized coating, while the butterfly plates are cut from 6061-T561 aluminum and open on ABEC high-speed ball bearings. We were just hoping that it would work as well as it looked.