BMW X3M F97 & X4M F98 S58 Downpipes
BMW X3M F97 & X4M F98 S58 Downpipes - DOWNPIPES with 200-Cell Catalytic Converters is backordered and will ship as soon as it is back in stock.
Vehicle Fitment
Vehicle Fitment
Upgrade your BMW X3M F97 or BMW X4M F98 with premium BRONDEX® performance downpipes, specifically engineered for the 3.0 BMW S58 twin-turbocharged engine.
Designed for BMW X3 M and X4 M models, BRONDEX® S58 downpipes are developed to improve exhaust flow, enhance turbocharger efficiency, and deliver a deeper, more aggressive exhaust sound.
Available in two configurations, you can choose between catless downpipes for maximum exhaust flow or catted downpipes with 200-cell High-Flow Sport Catalytic Converters for a balance between performance, exhaust flow, and catalytic filtration.
Manufactured in Europe from high-quality 304 stainless steel, BRONDEX® downpipes combine precision engineering, durability, and excellent fitment for your S58-powered BMW.
Catless or Catted BMW S58 Downpipes - Choose Your Configuration
X3M & X4M Catless Downpipes:
Designed for maximum exhaust flow with minimal exhaust restriction. Catless downpipes are intended for performance-focused applications where maximum exhaust flow and a more aggressive exhaust note are priorities.
X3M & X4M Catted Downpipes with 200-Cell High-Flow Sport Catalytic Converters:
Equipped with 200-cell high-flow sport catalytic converters, these downpipes offer improved exhaust flow compared to restrictive standard configurations while retaining catalytic elements.
Key Features & Benefits of BRONDEX® BMW X3M & X4M Downpipes
- Performance-oriented exhaust flow: Designed to reduce exhaust restriction and support improved turbocharger efficiency.
- Enhanced exhaust sound: Produces a deeper, sportier, and more aggressive exhaust note.
- Catless and catted options: Choose the configuration that suits your performance requirements.
- Premium 304 stainless steel: Manufactured using high-quality stainless steel for excellent durability and corrosion resistance.
- Reinforced welding: Double-sided welding on flanges and high-stress areas for additional strength and reliability.
- OEM-style oxygen sensor ports: Precisely positioned according to the original equipment layout.
- Bolt-on design: Engineered for direct installation using the original mounting points.
- OEM-style fitment: Designed for BMW X3 M F97 and BMW X4 M F98 applications.
- European manufacturing: Designed and manufactured in Europe to high-quality standards.
- 3-year warranty: Additional peace of mind with BRONDEX® product warranty.
- Worldwide shipping: Available for BMW enthusiasts and performance specialists worldwide.
BMW X3M F97 & X4M F98 Downpipe Compatibility
BRONDEX® manufactures S58 performance downpipes for the following BMW models:
- BMW X3 M F97 3.0 S58 (2019-2021);
- BMW X3 M Competition F97 3.0 S58 (2019-2021);
- BMW X3 M F97 LCI 3.0 S58 (2021-2024);
- BMW X3 M Competition F97 LCI 3.0 S58 (2021-2024);
- BMW X4 M F98 3.0 S58 (2019-2021);
- BMW X4 M Competition F98 3.0 S58 (2019-2021);
- BMW X4 M F98 LCI 3.0 S58 (2021-2024);
- BMW X4 M Competition F98 LCI 3.0 S58 (2021-2024);
We manufacture downpipes for all generations of the BMW X3 M F97 and X4 M F98, equipped with the 3.0 S58 engine, including LCI models.
Please provide your vehicle’s VIN (Vehicle Identification Number) when placing your order to ensure you receive the correct downpipes for your vehicle.
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!
BMW X3M F97 & X4M F98 S58 Downpipes - DOWNPIPES with 200-Cell Catalytic Converters is backordered and will ship as soon as it is back in stock.
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WORLDWIDE shipping
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 installation 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.