Active Autowerke BMW N26 F3X M228i 328i 428i GESI Catted Downpipe (11-111) 1535 - Unique mounting brace design

- Unique mounting brace design on the hot side for added structural rigidity to the Hot Side pipe

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The handcrafted AWE Q5 3

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Active Autowerke BMW N26 F3X M228i 328i 428i GESI Catted Downpipe (11-111) 1535 - Unique mounting brace designThe Active Autowerke BMW N26 F3X M228i 328i 428i GESI Catted Downpipe (11 111) enhances exhaust flow for BMW's N26 engines in F Chassis 228i, 328i, and 428i models. It replaces the restrictive OEM downpipe with a high quality unit designed for improved turbo response and durability. 3. 5" diameter stainless steel piping for reduced exhaust restriction Includes a 4" ultra high flow GESI catalytic converter designed not to trigger a Check Engine Light