AWE Tuning Audi RS3 - TT RS 4-5in S-FLO 4in Turbo Inlet Coupler

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.

AWE Tuning Audi RS3 / TT RS 4.5in S-FLO 4in Turbo Inlet Coupler

AWE 4.5" S-FLO 4" Turbo Inlet Coupler for Audi 8V / Mk3 2.5T

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