M3 M4 Race-Spec Downpipes (S55 F80 F82) – SSR ...
We craft all of our downpipes using only certified 304 Stainless Steel. We chose 304 Stainless Steel because of its weldable properties, high corrosion oxidation resistance, and relatively high toughness. The process of building these downpipes begins with the in-house engineering design work on our own shop F80 M3 and F82 M4.
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