CTS Turbo | 2018+ SQ5 Downpipe with High-Flow CatCTS Turbo 2018+ B9 SQ5 Downpipe with High Flow Cat CTS Turbo B9 Audi SQ5 High Flow Cat is made to maximize exhaust flow for highest power gains. Do not compromise performance and sound with factory parts. Designed using the latest in CAD technology; this part is made to fit perfectly in place of restrictive factory catalytic converter. Manufactured from CAST T304 stainless steel; hand TIG welded and back purged to ensure years of reliable performance.
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