MAD Secondary Downpipes | BMW F90 M5 | F91/F92/F93 M8 S63
MAD Secondary Downpipes | BMW F90 M5 | F91/F92/F93 M8 S63
Product Details
MAD Secondary Downpipes
BMW F90 M5 | BMW F91/F92/F93 M8
Improve exhaust flow and sharpen the performance of your S63-powered BMW with MAD Secondary Downpipes. Designed as a direct replacement for the factory secondary downpipes, this system reduces exhaust restriction while supporting quicker turbo response, a more aggressive exhaust note, and increased performance potential.
Manufactured from premium stainless steel, the downpipes feature smooth mandrel bends and integrated flex sections for durability, proper movement, and precise fitment. They connect directly to the factory exhaust system without cutting or welding, making them a clean bolt-on upgrade for stock and modified vehicles.
Product Features
- Premium stainless-steel construction
- Replaces the factory secondary downpipes
- Smooth mandrel bends for improved exhaust flow
- Integrated flex sections
- Helps reduce exhaust backpressure
- Supports quicker turbo spool and throttle response
- More aggressive exhaust tone without excessive drone
- Compatible with right-hand-drive and left-hand-drive vehicles
- Direct bolt-on installation
- No cutting or welding required
- Installation hardware and gaskets included
- No check-engine light expected from the secondary-downpipe replacement
- Lifetime warranty against defects and fitment issues
- 90-day return period
Performance Benefits
- Potential gains of up to 30 horsepower on stock turbochargers
- Additional performance potential with upgraded turbochargers
- Improved exhaust flow
- Faster turbo response
- Enhanced horsepower and torque potential
Actual results depend on tuning, fuel, supporting modifications, and vehicle condition.
Vehicle Fitment
- BMW M5 (F90)
- BMW M8 Coupe (F92)
- BMW M8 Convertible (F91)
- BMW M8 Gran Coupe (F93)
Engine: S63 Twin-Turbo V8
Availability
In Stock & Ready to Ship
Orders typically ship within 1–2 business days.
Installation
Professional installation is recommended. Uproar Customs does not provide installation instructions or technical support for self-installation.
Emissions Non-Compliance. Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, hobby, or other off-road use. Its use is prohibited in any motor vehicle that is subject to emissions inspection or control. Legal in California only for racing vehicles that may never be used, or registered or licensed for use, upon a highway.
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only, never to be driven on public roads. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. We suggest pairing this product with racing software to prevent fault codes and check engine lights. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified (CARB) and not EPA certified. You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
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