BMW M4 F8x Catless & High-Flow Catted Downpipes — S55 3.0L Twin-Turbo Inline-6 | 2015–2020
YPG Motorsport race downpipes for the BMW M3/M4 F80/F82/F83 platform. Direct replacement for the factory catalytic converters on the S55 engine. The twin-scroll turbo setup on the S55 benefits enormously from reduced exhaust backpressure — the turbos spool faster, mid-range torque fills in, and the exhaust note transforms from refined to raw.
Choose from three options: catless for maximum unrestricted flow on track and race builds, 200-cell high-flow catted for strong performance with reduced exhaust odour, or 400-cell GESI catted for emissions-compliant applications that still deliver measurable power gains.
- Material: SS304 stainless steel, mandrel-bent, TIG-welded
- Fitment: BMW M3 F80, M4 F82 Coupe, M4 F83 Convertible (2015–2020)
- Engine: S55 3.0L twin-turbo inline-6
- Power gains: +20–40 WHP (catless with Stage 2 tune)
- Warranty: Lifetime warranty against manufacturing defects
Stage 2 ECU calibration is required with catless downpipes to suppress CEL and dial in air-fuel ratios. Bolt-on installation using OEM mounting points — no cutting or welding required.
Ships worldwide from YPG Motorsport — free shipping to the GCC, USA, UK, and EU.
These downpipes are the hardware prerequisite for Stage 2 power. Pair them with the matching ECU tune to extract the full gains.
View Stage 2 Tune →
