Milltek Sport Secondary Catalyst Bypass Midpipe – BMW M2 (G87, S58)
Unleash deeper, purer engine tone with enhanced flow. The Milltek Sport secondary catalyst bypass midpipe is a top-tier upgrade for BMW M2 owners seeking aggressive acoustics and improved exhaust dynamics without altering the factory downpipes or cat-back system.
🔧 Performance & Sound Highlights
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Secondary Catalyst Bypass Design – Eliminates the rear catalytic converters to deliver a richer, more aggressive exhaust note and increased exhaust gas flow.
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Non-Resonated Layout – Amplifies engine character, producing a track-inspired tone that's louder under load and crisper when accelerating, without excessive cabin drone.
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Mandrel-Bent 2.75" (70mm) Stainless Piping – Ensures consistent diameter for smooth gas flow, reducing turbulence and boosting throttle response.
🛠 Construction & Fitment
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Built entirely from T304L stainless steel, providing exceptional resistance against corrosion, heat, and wear.
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Specifically engineered for BMW 2 Series G87 M2 with S58 engine, fitting between the factory downpipes and the OEM or aftermarket cat-back system.
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Designed for easy bolt-on installation, using existing mounting points—no cutting or fabrication required.
🏁 Benefits & Upgrades
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Enhanced throttle response and improved turbo spool behavior.
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Significantly richer and more aggressive exhaust soundtrack tailored for track or spirited driving.
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Lightweight and durable construction engineered for longevity.
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Provides a stealthy performance upgrade, keeping your factory look while delivering a bolder tone.
⚠️ Important Considerations
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This midpipe is not street emissions compliant in many regions; it is intended for off-road or track use only.
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Removal of the secondary catalysts may trigger engine warning lights or emissions alerts without proper tuning or ECU modifications.
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OEM cat-back systems are compatible; pairing with a performance exhaust system can further maximize flow and acoustic enhancement.

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