Description
Open Box: This is an open-box item. For proper alignment with the primary pipes and the rest of the exhaust system, the mounting brackets will need to be cut off prior to installation. Aside from this modification, everything required for installation is included.
Upgrade your BMW F90 M5 or F91/F92/F93 M8 with the MAD S63R Secondary Downpipes, engineered to maximize exhaust flow, increase performance, and deliver a more aggressive exhaust note. Designed using premium materials and precision craftsmanship, these secondary downpipes reduce exhaust restriction, allowing your twin-turbo S63R engine to breathe more efficiently.
Manufactured from premium-grade stainless steel, the MAD Secondary Downpipes feature mandrel-bent tubing with smooth-radius bends to minimize backpressure and optimize exhaust gas flow. This results in quicker turbo spool, improved throttle response, and gains of up to 30 horsepower on stock turbochargers, with even greater performance potential when paired with upgraded turbochargers and proper tuning.
Built to withstand harsh driving conditions, the corrosion-resistant stainless steel construction ensures exceptional durability and long service life, while the polished finish adds a premium appearance beneath your vehicle. Integrated flex sections help absorb engine movement, reducing stress on the exhaust system and improving long-term reliability.
Designed as a direct bolt-on upgrade, the MAD Secondary Downpipes install using the factory mounting locations and include all necessary hardware and gaskets for installation.
Features
- Designed for BMW S63R-powered F9X M models
- Premium stainless steel construction
- Mandrel-bent tubing for maximum exhaust flow
- Smooth bends reduce turbulence and backpressure
- Integrated flex sections for improved durability
- Faster turbo spool and improved throttle response
- Up to 30 HP gains on stock turbochargers
- Greater performance potential with upgraded turbos
- Produces a deeper, more aggressive exhaust tone
- No Check Engine Light (CEL)
- Compatible with both left-hand drive (LHD) and right-hand drive (RHD) vehicles
- Precision-engineered direct fit
- Includes installation hardware and gaskets
- Ships within 1–2 business days
- Lifetime warranty against manufacturing defects and fitment
Specifications
- Brand: MAD
- Product Type: Secondary Downpipes
- Material: Premium Stainless Steel
- Construction: Mandrel-Bent
- Flex Sections: Yes
- Finish: Polished Stainless Steel
- Engine: BMW S63R Twin-Turbo V8
- Installation: Direct Bolt-On
- Warranty: Lifetime
Vehicle Fitment
BMW
- 2018+ BMW F90 M5
- 2019+ BMW F91 M8
- 2019+ BMW F92 M8 Coupe
- 2019+ BMW F93 M8 Convertible
Note for 2021+ European LCI Models with OPF
Before ordering, please verify the style of your factory downpipes.
These MAD Secondary Downpipes are compatible with OPF-equipped vehicles using a V-band slip-fit connection.
They are not compatible with factory downpipes equipped with a two-bolt flange connection.
Package Includes
- MAD S63R Secondary Downpipes
- Installation Hardware
- Required Gaskets
Emissions Disclaimer
This product is intended for off-road, racing, or closed-course competition use only. It is not legal for sale or use on pollution-controlled motor vehicles operated on public roads, highways, or streets where prohibited by law.
By purchasing this product, you acknowledge that:
- You are responsible for complying with all applicable federal, state, and local emissions laws and regulations.
- Use of this product on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.
- MAD and its affiliates disclaim all liability for improper or unlawful use of this product.
Please check your local laws before purchasing or installing this product.
Disclaimer: Open box products are final sale and cannot be returned or exchanged after purchase, except in the case of an error on our part.
