Transform
the performance and sound of your 2025+ BMW G90 M5 with our premium
T304 stainless steel valved full exhaust system. Purpose-built for the
S68 4.4L twin-turbo V8, this system is engineered to enhance exhaust
flow, reduce backpressure, and deliver a deep, aggressive tone--without
compromising daily drivability.
Designed
using advanced techniques for a precise OEM-fit, this exhaust system
integrates seamlessly with all factory mounting points and adds exhaust
valve control which is missing from the OEM exhaust system. Whether
cruising or pushing the limits, this system provides an immersive and
exhilarating exhaust experience.
Key Highlights:
T304 Stainless Steel Construction: Built
entirely from corrosion-resistant, mandrel-bent T304 stainless steel,
this system offers long-term durability, heat resistance, and a
consistent finish. Welded with precision using TIG methods to ensure
structural integrity and leak-free performance under high-load
conditions.
Remote control Exhaust Valves: Adds an electronic
valve system controlled by a remote to replace the missing exhaust
valves BMW did not provide with the stock exhaust. Provides a quiet,
subdued tone in comfort modes and an aggressive, open-valve growl in
dynamic settings--no tuning or coding required.
High-Flow X-Pipe Midsection: Centralized
X-pipe balances exhaust pulses between banks, improving scavenging and
enhancing the natural V8 rhythm. Reduces unwanted drone and enhances
top-end acoustics under throttle.
Performance-Oriented Flow Path: Oversized and optimized
3.5" (89mm) piping diameter ensures efficient flow, minimizes
turbulence, and maximizes power delivery throughout the rev range.
Estimated gains of +18-22 hp and +20-25 lb-ft torque (with optional EPA
catted downpipes).
Optional High-Flow Catted Downpipes: Available
as an upgrade, our 400-cell GESI catalytic converters maintain
emissions compliance (region-dependent) while increasing turbo
efficiency and reducing spool time. CNC-machined flanges and heat
shielding ensure fitment and thermal control.
Sound Engineering: Precision-tuned
for a refined cold start, deep idle rumble, and aggressive throttle
response. The system delivers a clean, motorsport-inspired tone without
unwanted cabin drone--ideal for both spirited driving and long highway
trips.
Quad 112mm Exhaust Tips (Multiple Finishes): Choose
from brushed stainless, matte black or carbon fiber quad tips to match
your M5's styling. Dual-wall design resists heat discoloration and adds
a premium finish to the rear profile.
Direct Bolt-On Installation: No
cutting, welding, or modification required. Includes all clamps,
gaskets, valve motor brackets, valve motors with remotes and hardware.
Fully reversible for lease or resale.
Specifications:
Material: T304 Stainless Steel
Tubing Diameter: 3.5" (89mm) from downpipes to rear exhaust
Valves: Electronic remote control plug-and-play
Weight Reduction: ~10-12 lbs vs. OEM system
Tip Diameter: 112mm (quad outlet)
Fitment: BMW G90 M5 (2025+) / G99 M5 Touring
Why Choose This Exhaust System?
This
full stainless system offers the perfect balance of durability, sound
tuning, and performance gains--without sacrificing luxury or OEM
integration. Ideal for enthusiasts looking for a visceral exhaust
experience with the peace of mind of factory compatibility and
high-quality materials.
Unlock the full potential of your G90 M5. Let it breathe, let it roar.
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