G8X M2 | M3 | M4 - S58 Downpipes

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Upgrade to LAB Downpipes and remove the factory backpressure created by your stock catalytic converters. With improved exhaust flow, your S58 turbos can spool faster and reach thei r power potential—especially when paired with a proper tune. On a tuned S58 with stock turbos, LAB Downpipes have shown gains of up to 30 HP. The integrated flex pipe section helps reduce stress on the exhaust system while minimizing unwanted vibration for a more reliable, refined setup. Key Features Smooth, high-flow bends for improved airflow Up to +30 HP on stock turbos (with tuning) 3-inch downpipe design Flex section to reduce vibration and exhaust stress Fitment 2023+ BMW M2 (G87) 2021+ BMW M3 (G80) 2021+ BMW M4 (G82 / G83 Convertible) Fits RWD and AWD (xDrive) models Emissions / Compliance Notice Not CARB approved.Track / Off-Road Use Only. Not legal for use on public roads. Show more