The CTS Turbo High-Flow Cat for the BMW B58 is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts – unleash your BMW’s potential! \n \nDesigned using the latest in CAD technology; this part is made to fit perfectly in place of your factory downpipe. Manufactured from T304 stainless steel, hand TIG welded and back-purged to ensure years of reliable performance. \n \nProduct Details: \n

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• Precisely designed and tested on a real car in the real world
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• T304 stainless steel, TIG welded back-purged construction
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• Replaces restrictive factory downpipe with high-flow 200cell catalytic converter
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• Great power upgrade with uncompromising performance
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• Incredible sporty exhaust sound, subtle when cruising
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• No drone with factory exhaust
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\nWe recommend replacing the downpipe gasket when installing, factory BMW gasket 18328612538 is required (not included). \n \n \nCatalytic converters damaged by "crackle tune" are not covered under warranty. \n

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• 2016+ F20 BMW M140i
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• 2016+ F22 BMW M240i & M240i xDrive
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• 2016+ F30/F31/G20 BMW 340i & 340i xDrive
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• 2016+ F32/F33/F36/G22/G23/G26 BMW 440i & 440i xDrive
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• 2016+ G30/G31 BMW 540i & 540i xDrive
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• 2016+ G11/G12 BMW 740i & 740i xDrive
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• 2018+ G01 BMW X3 M40i xDrive
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• 2018+ G01 BMW X4 M40i xDrive
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• 2019+ G01 BMW X5 40i xDrive
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\nStage 2 software is required to avoid check engine light. Only fits cars without GPF/OPF. \n \n \n  \n \n