BMW F82/F83 M4 Performance Exhaust Downpipe Set – High-Flow Design for Maximum Power | Fits F82 M4 Coupe and F83 Convertible Models (2014–2018) – S55 3.0L Twin-Turbo I6 Engine

Unleash the true voice and performance potential of your BMW F8X M4 with the BAVMODS® Performance Exhaust Downpipe Set — precision-engineered to transform the way your S55 engine breathes, sounds, and performs.

The factory downpipes are restrictive by design, choking exhaust flow through dense catalytic converters and limiting turbo efficiency. Our high-flow system removes that barrier — unlocking instant turbo response, crisper throttle feel, and a deeper, more aggressive exhaust tone that captures the raw DNA of the M division.

Constructed from T304 stainless steel, each pipe is CNC-bent and TIG-welded by hand to deliver exceptional strength, heat resistance, and long-term durability under high-boost conditions. The mandrel-bent design ensures perfectly smooth exhaust pathways, reducing backpressure and allowing exhaust gases to exit freely. The result: faster turbo spool, improved midrange torque, and a powerband that feels sharper, more linear, and alive.

Every weld, flex joint, and mounting flange is built with track-level precision, ensuring proper fitment with the factory exhaust system and O2 sensor locations. Whether you’re running a stock tune or a fully custom ECU map, these downpipes deliver the kind of unrestricted airflow your S55 was meant to have.

You’ll feel the difference the moment you hit the throttle — the sound becomes raw and authentic, with a tone that builds naturally into a spine-tingling roar at high RPM. It’s more than just a power mod — it’s an awakening.

Key Features

• High-Flow Design – Significantly reduces backpressure and improves exhaust velocity
• Mandrel-Bent T304 Stainless Steel – Corrosion-resistant and engineered for long-term durability
• Precision TIG Welds – Handcrafted seams designed for maximum strength and gas flow consistency
• Flex Joint Integration – Absorbs vibration and prevents stress cracks under load
• OEM Sensor Compatibility – Pre-fitted O2 sensor bungs for plug-and-play installation
• Enhanced Turbo Efficiency – Faster spool and improved midrange response
• Aggressive Exhaust Tone – Amplifies the M3’s character with a rich, motorsport-inspired note
• Direct Fitment – Perfect alignment with OEM or aftermarket exhaust systems

Performance Benefits

• Noticeable increase in horsepower and torque
• Sharper throttle response and quicker turbo spool
• Reduced turbo lag and smoother power delivery
• Cooler exhaust gas temperatures under high load
• Unrestricted exhaust flow for maximum efficiency
• Deeper, more aggressive exhaust sound with refined tone

FITMENT:

• BMW F82 M4 Coupe (2015–2018)
• BMW F83 M4 Convertible (2015–2018)

ENGINE COMPATIBILITY: S55B30T0 3.0L Twin-Turbo Inline-Six

NOTE: For off-road or competition use only. Professional installation is recommended to ensure proper sensor alignment and sealing. Pairing with an ECU tune is highly recommended to fully unlock performance potential and eliminate CEL codes.

Please refer to the “Fitment” section in the product description for compatibility details.