BMW M5 F90 Catless Downpipes + Midpipes — S63TU4 4.4L Twin-Turbo V8 | 2018+
YPG Motorsport catless downpipes and midpipes for the BMW M5 F90 / F90 LCI. Complete replacement of the factory primary and secondary catalytic converters on the S63TU4 engine — four cats removed in total. This is the single biggest bolt-on power gain available for the F90 M5, unlocking the turbo system to breathe freely.
The S63TU4 is a hot-vee design with the turbos sitting inside the valley — backpressure relief from downpipe removal has a direct, immediate effect on spool and power delivery. Expect a significant bump in mid-range torque and a noticeably louder, deeper exhaust note.
- Material: SS304 stainless steel, mandrel-bent, TIG-welded
- Fitment: BMW M5 F90, M5 CS, M5 Competition (2018+)
- Engine: S63TU4 4.4L twin-turbo V8
- Includes: Primary downpipes + secondary midpipes (full decat)
- Power gains: +30–50 WHP (with Stage 2 tune)
- Warranty: Lifetime warranty against manufacturing defects
ECU calibration is required after installation to prevent fault codes and unlock the full power potential. Pair with the Eventuri S63 intake for a complete bolt-on build.
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 →
