S-FLO 4” Coupler: The S-FLO 4” Coupler transitions from 4.5” to 4” to accommodate aftermarket turbo inlet pipes that are 4” in diameter.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2017-2020,2022-2024 Audi RS3 Base
2018-2022 Audi TT RS Quattro Base
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