Subtle but noticeable difference!
"Awesome deeper tone with more pops and bangs. Waiting to pair this with the new HFD midpipe🤪"
BMW G80/G82/G83/G87 M2 / M3 / M4 400 Cell Catted Downpipes
$3,196.00
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SKU:
BMW.G8X.M2.M3.M4.FF.400C.BR
BMW G80/G82/G83/G87 M2 / M3 / M4 400 Cell Catted Downpipes
Free Shipping to the 48 Contiguous States
$3,196.00
BMW G8X M2 / M3 / M4 – EPA-Compliant 400 Cell Catted Downpipes
Engineered for the S58 Twin-Turbo Inline-6 • High-Flow • Compliant •
Introducing Our NEW 400 Cell EPA-Compliant Downpipes for the G8X Platform
The BMW G8X M2, M3 and M4 represent the next evolution of M performance, powered by the highly capable S58 twin-turbo inline-6. While factory catalysts prioritize restriction and sound suppression, our NEW EPA-compliant 400 cell high-flow catted downpipes are engineered to reduce exhaust backpressure, enhance turbo efficiency, and unlock a sharper, more aggressive exhaust character — all while maintaining emissions compliance standards.
This upgrade maximizes the performance potential of the S58 platform without compromising drivability.
Why Upgrade to 400 Cell?
- EPA-Compliant 400 Cell High-Flow Catalysts: Increased exhaust flow while maintaining compliance standards.
- Improved Turbo Response: Reduced restriction enhances spool speed and mid-range power delivery.
- Enhanced Exhaust Character: Deeper tone with more defined turbo acoustics and sharper high-RPM presence.
- Street & Track Ready: Noticeable gains while maintaining everyday usability.
Performance & Engineering
- Optimized Flow Architecture: Minimizes backpressure while preserving catalyst efficiency.
- Mandrel-Bent Tubing: Smooth internal transitions for consistent exhaust velocity.
- Precision TIG Welding: Built to withstand extreme exhaust temperatures and high boost levels.
- Direct OEM Bolt-On Installation: Utilizes factory mounting locations for straightforward installation.
- Engineered to Pair Seamlessly with Valvetronic Exhaust Systems
Sound Transformation
- Stock Exhaust + Downpipes: Noticeable increase in depth and turbo presence with improved exhaust clarity.
- Valvetronic Exhaust + Downpipes: Maximum transformation — stronger crackles, enhanced turbo spool acoustics, and a more aggressive overall signature.
Construction & Durability
- Premium high-grade stainless steel construction
- High-temperature resistant 400 cell catalyst cores
- OEM-style sensor placement for proper operation
- Engineered for long-term reliability under high boost and tuning conditions
Unleash the full potential of your S58-powered G8X — starting at the source.
📩 Questions or ordering assistance? customerservice@valvetronic.com
- Brushed T304 Stainless Steel
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Warranty Coverage
All products manufactured by Valvetronic Designs are guaranteed to be free from manufacturing defects in materials and workmanship at the time of sale. A manufacturing defect is defined as any characteristic of the product that arises during the manufacturing process which impairs its usability for the purposes for which it was designed and manufactured.
Products are guaranteed to fit and function as designed on their intended vehicle application, provided the vehicle has not been modified or incurred structural damage. Sound or tone is not a warrantable or returnable issue, as exhaust sound is subjective and not considered a defect.
Warranty Periods
- 304 stainless steel and titanium exhaust tubes and welds carry a Lifetime of Ownership limited warranty against defects in workmanship or material, including penetrating rust.
- Mufflers and resonators carry a 3-year limited warranty against defects in workmanship or material, including penetrating rust.
- Catalysts are warranted to conform to EPA emission testing and OBDII compatibility criteria for 25,000 miles from the date of installation, whichever occurs first.
- Catalytic converter external shells, including end pipes, are warranted against corrosion and defective welding for 5 years or 50,000 miles from the date of installation, whichever occurs first.
- Vacuum pots, electronic remotes, and mechanical valves are covered by a 1-year limited warranty.
- Electronics, including 12V vacuum pumps, RF modules, and controllers, are covered by a 1-year limited warranty.
- Tip finish is covered by a 1-year limited warranty.
Warranty Terms
- Warranty coverage begins on the purchase date and applies only to the original purchaser.
- This warranty is not transferable or assignable at any time.
- Discoloration caused by heat, salt, brine, or other road treatments is not covered.
- Tip finish discoloration or damage caused by heat, chemicals, lack of maintenance, road salt, brine, other road treatments, road debris, or misuse is not covered.
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Overall rating: 5.0 / 5 from 2 reviews.
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Need the HFD!
"Haven’t installed these puppies yet but soon they will be on my G80! Leaving 5 stars because I know they’re going to be beast!"
