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BN BMW S58 High Flow Catted Downpipe – G80 M3 / G82 G83 M4 / G87 M2
Unlock the full potential of your G8X M2, M3, or M4 with the BN High Flow Catted Downpipe for the S58 engine. Designed for performance enthusiasts who want more power, sharper throttle response, and an enhanced exhaust note—all while staying emissions-friendly.
Key Features:
✅ Euro5 200 Cell High-Flow Catalytic Converter – Reduces harmful emissions while maintaining peak performance, improved flow, and reduced turbo lag.
✅ Inconel Heat Shielding – Motorsport-grade inconel wrap reduces under-hood temperatures, protects surrounding components, and maintains consistent performance.
✅ 304 Stainless Steel Construction – Built with high-grade stainless steel and precision TIG welds for long-lasting durability and resistance to corrosion.
✅ Bolt-On Installation – Direct fitment for all G8X S58-powered BMWs with OEM or aftermarket exhaust systems.
Power Meets Precision
This high-flow downpipe improves exhaust gas velocity by reducing backpressure and eliminating the flow restrictions of the factory unit. The result is better turbo spool, increased horsepower, and a more aggressive sound profile without excessive drone.
Clean, and High Performance
Featuring a Euro5-rated 200 cell catalytic converter, the BN S58 downpipe offers the perfect balance between emissions control and performance.These catalytic converters are designed to minimize harmful emissions while preserving high performance. Engineered for maximum exhaust flow and minimal backpressure, they enhance engine sound and elevate the overall driving experience.
Why BN?
BN performance parts are track-tested, street-proven, and crafted to meet the highest standards. Every product is built with precision engineering, performance in mind, and quality you can trust.
✅ Fitment – BN S58 High Flow Catted Downpipe (Euro5 / Inconel Shielded):
BMW M3 (S58 Engine):
2021–2025 BMW M3 Sedan – G80
2021–2025 BMW M3 Competition – G80
2022–2025 BMW M3 xDrive / Competition xDrive – G80
2025+ BMW M3 CS – G80
BMW M4 (S58 Engine):
2021–2025 BMW M4 Coupe – G82
2021–2025 BMW M4 Competition – G82
2021–2025 BMW M4 Convertible (xDrive) – G83
2023–2025 BMW M4 CSL – G82
BMW M2 (S58 Engine):
2023–2025 BMW M2 Coupe – G87
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