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.
⚠ MOTORSPORT USE ONLY — LEGAL DISCLAIMER
This product is sold for motorsport, off-road, and competition use only. It is not legal for use on vehicles operated on public highways in jurisdictions where emissions equipment removal is prohibited. The buyer assumes full responsibility for compliance with all applicable local, state, and federal laws.
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 →
