RPM Tuning 304 Stainless Steel High-Flow Heat Shielded Dual-Catless Downpipes For BMW S55 (F80, F82, F83, F87)

Unleash True M Power with Precision Engineering.

Take your BMW M3, M4, or M2 Competition to the next level with the RPM Tuning 304 Stainless Steel High-Flow Heat Shielded Dual-Catless Downpipes. Designed specifically for the legendary S55 twin-turbo inline-six, these downpipes free your engine from restrictive factory catalytic converters, delivering maximum performance, sharper throttle response, and durability you can rely on.

Long-Pipe Sizing:

3.0 Inch Turbo Side
2.5 Inch Exhaust Side

Short-Pipe Sizing:

3.0 Inch Turbo Side
2.5 Inch Exhaust Side

✅ Premium Build Quality & Materials

• Constructed from Top-Grade 304 Stainless Steel

• Superior strength and corrosion resistance for long-lasting performance

• Withstands extreme exhaust heat and repeated track abuse without cracking or fatigue

✅ Precision TIG Welding

• Each downpipe is TIG-welded by skilled craftsmen

• Smooth internal flow paths reduce turbulence for faster turbo response

• Robust welds eliminate weak points under high thermal stress

✅ OEM Fitment, Perfect Integration

• Direct bolt-on replacement for factory S55 downpipes

• Fully compatible with stock exhaust systems and aftermarket upgrades

• No cutting, no modification – engineered for seamless installation

✅ High-Flow Catless Performance

• Removes restrictive factory catalytic converters for unmatched exhaust flow

• Reduces turbo backpressure, enabling faster spool and sharper response

• Optimized for Stage 2+ ECU tunes and higher boost levels

• Proven horsepower and torque gains across the rev range

✅ Integrated Heat Shield – Maximum Thermal Protection

Heat management is critical on high-performance engines like the S55. Our integrated thermal shielding ensures:

• Containment of extreme exhaust heat, reducing engine bay heat soak

• Protection for vital components including wiring, intake, and sensors

• Lower Exhaust Gas Temperatures (EGTs) for turbocharger and engine longevity

• Reliable performance during aggressive driving and track sessions

Without advanced heat shielding, performance suffers under heat soak. Our design ensures your M car stays cooler, stronger, and more reliable under pressure.

✅ Aggressive M-Tuned Exhaust Note

• Amplifies the raw twin-turbo character of the S55 engine

• Deep, sporty tone with enhanced crackles and pops

• Balanced sound with no unwanted cabin drone

✅ Lifetime Warranty for Peace of Mind

At RPM Tuning, we stand behind every product. All RPM downpipes are backed by our Lifetime Warranty, guaranteeing a long-term investment in quality and performance.

Contact us to get your dream car to the next level today!

✅ Compatibility for the Following BMW S55 Models:

• BMW F80 M3 Sedan (2015–2018)

• BMW F82 M4 Coupe (2015–2020)

• BMW F83 M4 Convertible (2015–2020)

• BMW F87 M2 Competition (2018–2021)