VRSF Race Downpipes BMW X3M X4M S58 F97 F98 19-22VRSF Race Downpipes BMW X3M X4M S58 F97 F98 (2019 2022) The S58 in the X3M and X4M is built for serious performance, and the VRSF Race Downpipes are built to match. By eliminating the factory catalytic converters entirely and reducing back pressure, you get 30whp and 35wtq as a direct bolt on, and up to 60whp and 100wtq when paired with a DME remap. Hand crafted from SS304 stainless steel with a smooth mandrel bent design that maximises flow without
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