Downpipes BMW M5 G90 sedan / G99 touring
Downpipes BMW M5 G90 sedan / G99 touring - DOWNPIPES (catless) is backordered and will ship as soon as it is back in stock.
Vehicle Fitment
Vehicle Fitment
Primary and Secondary Downpipes for BMW M5 G90 / G99 Touring 4.4i V8 S68 - the perfect upgrade for enhancing your driving experience.
Designed specifically for the BMW M5 G90 and BMW G99 Touring, BRONDEX® Complete Downpipes System (both the primary and secondary) are engineered to optimize exhaust flow, reduce turbo lag, and provide an exhilarating sound that will turn heads everywhere you go.
Available Options:
- M5 G90/G99 Catless Downpipes (DOWNPIPES);
- M5 G90/G99 Catted Downpipes (DOWNPIPES with 200-Cell Catalytic Converters);
Why Choose BRONDEX® Downpipes?
- Increased Power and Torque:
The primary benefit of installing BRONDEX® downpipes is the noticeable increase in horsepower and torque. By reducing backpressure, they allow the turbochargers to spool more efficiently, resulting in increased power throughout the rev range.
- Faster Turbo Spool:
One of the most noticeable changes after installing BRONDEX® Downpipes is the reduction in turbo lag. With improved exhaust flow and less restriction, your turbochargers can spool up faster, providing more immediate power delivery when you need it most. Whether you're accelerating off the line or overtaking on the highway, you'll feel the difference.
- Mature Exhaust Note:
One of the most talked-about benefits of BRONDEX® Downpipes is the dramatic enhancement in exhaust acoustics and tone. By eliminating the large, restrictive OEM catalytic converters, our downpipes significantly improve exhaust flow dynamics, allowing the engine to breathe more freely and produce a deeper, more aggressive, and sportier exhaust note.
The result is a refined yet powerful sound signature that perfectly complements the BMW M5 G90 and G99’s performance-oriented design. At idle, the tone is rich and resonant; under acceleration, it transforms into a distinctive, throaty roar that reflects the true character of the M5’s twin-turbocharged V8 engine.
- Reduced Turbo Heat:
Optimized exhaust flow and minimized backpressure provided by BRONDEX® Downpipes significantly help in reducing turbo heat buildup. With gases exiting the turbine housing more efficiently, operating temperatures remain lower and more stable - preventing excessive heat saturation in the turbocharger system.
This improved thermal management not only enhances turbocharger efficiency and response, but also contributes to long-term reliability and durability. By maintaining cooler operating conditions, BRONDEX® Downpipes ensure that your BMW M5 G90 or G99 continues to deliver consistent, peak performance mile after mile.
- Installation and Compatibility:
BRONDEX® Downpipes are a direct Bolt-on upgrade, requiring no modifications to the OEM turbochargers or exhaust system. They are compatible with both stock and aftermarket exhaust setups for the BMW M5 G90 Sedan and G99 Touring.
- Made in Europe:
Every set of BRONDEX® Downpipes is proudly made in Europe, using premium materials and precision manufacturing processes that meet the highest engineering standards. The result is a product that not only boosts performance but also guarantees European quality, reliability, and craftsmanship.
- 3 Years Warranty:
Constructed from premium-grade Stainless Steel, these downpipes offer superior durability, heat resistance, and corrosion protection.
The result is a product that not only enhances performance and sound but also delivers long-term reliability with an OEM-level fit and finish.
Notes
Notes
After installing downpipes - whether or not they include catalytic converters - the Check Engine Light (CEL) may appear, and ECU remapping may be required. OFF ROAD / RACING COMPETITION USE ONLY!
Downpipes BMW M5 G90 sedan / G99 touring - DOWNPIPES (catless) is backordered and will ship as soon as it is back in stock.
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Frequently Asked Questions
What is a Downpipe?
What is a Downpipe?
Downpipe is a component of a vehicle’s exhaust system that channels exhaust gases from the turbocharger to the rest of the exhaust system. It connects the turbo to the mid-pipe and plays a key role in optimizing exhaust flow. By replacing the restrictive factory catalytic converter, a downpipe allows exhaust gases to flow more freely from the turbocharger. In turbocharged engines, this reduces backpressure, enabling the turbo to spool faster and more efficiently, resulting in increased power output, especially at higher RPMs.
How Does a Downpipe Increase Horsepower?
How Does a Downpipe Increase Horsepower?
- Improved Exhaust Flow: A downpipe replaces the restrictive factory catalyst, allowing exhaust gases to flow more freely from the turbocharger. In turbocharged engines, this reduces backpressure, allowing the turbo to spool more quickly and efficiently. The result is an increase in power output, especially at higher RPMs.
- Reduced Backpressure: Stock OEM catalysts often contain restrictive catalytic converters designed to meet emissions standards, which can hinder performance. Upgraded downpipes, especially "catless" or "high-flow catted" versions, reduce this restriction, allowing the engine to breathe better and operate more efficiently.
- Boost Gains: By improving exhaust flow, the turbocharger can spool up faster and achieve higher boost levels, translating into greater engine power. The faster the turbo reaches its peak boost, the more quickly the engine can generate additional horsepower and torque.
- Expected Power Gains: On turbocharged vehicles, including many AUDI, BMW and Mercedes models, downpipes can provide power gains in the range of 20 to 60 horsepower and more when combined with ECU tune. The actual gains depend on the car's engine, other modifications, and whether you use a high-flow catalytic converter or opt for a catless downpipe.
Is downpipe good for engine?
Is downpipe good for engine?
Downpipe can be very beneficial for your engine, by improving performance, reducing turbo lag, and lowering exhaust gas temperatures. However, it requires careful instalation and a proper ECU tune to avoid issues. If all done correctly, it can be a great upgrade without harming the engine.
What is the difference between stock catalytic converter and sports catalytic converter?
What is the difference between stock catalytic converter and sports catalytic converter?
A stock catalytic converter has a high cell density (typically around 800/900 cells per square inch), which maximizes emissions reduction but restricts exhaust flow, limiting performance. A 200-cell sports catalytic converter has a lower cell density, allowing for significantly better airflow, increased horsepower. The exact performance gains can vary depending on the vehicle's tune and driving conditions. High quality Stainless Steel construction and special precious metal wash coat delivers consistent emissions reduction, with a significant reduction in size and weight.
What is the difference between catless downpipes and catted downpipes
What is the difference between catless downpipes and catted downpipes
Catless downpipes lack a catalytic converter, allowing for maximum exhaust flow, increased performance, and a louder exhaust note, but they produce more emissions and can trigger a check engine light. Catted downpipes include a high-flow catalytic converter, offering a balance between performance and emissions compliance while producing a slightly quieter exhaust.
What warranty applies to BRONDEX® downpipes?
What warranty applies to BRONDEX® downpipes?
All BRONDEX® exhaust products are covered by a 3-year warranty. Our Warranty Policy.