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BMW X3 / X4M Modified with GFC 200-Cell High-Flow Catalytic Downpipe

Original price was: $899.00.Current price is: $764.00.

Discount valid for 24 hours

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SKU: BMW X3 / X4M Categories: , ,

Warranty service:3 years

Production cycle:10-15DAYS

Overview

GFC 200-Cell High-Flow Catalytic Downpipe (High-Performance Header Downpipes)

For BMW X3M & X4M (F97 / F98 S58)

200-Cell High-Flow Catalyst | Twin-Turbo Spool Optimization | Aggressive Exhaust Note | Premium 304 Stainless Steel

Unlock the true power and ferocious acoustic potential of your BMW X3M or X4M (F97/F98) powered by the high-output S58 twin-turbo engine with GFC 200-Cell High-Flow Catalytic Downpipes.

Factory downpipes are heavily restricted by dense emission catalysts, choking turbo response and muting the aggressive character of the S58 engine. Engineered as a direct-fit performance upgrade, these downpipes feature high-flow 200-cell metallic catalytic converter cores that drastically reduce backpressure. This allows the twin turbos to spool significantly faster, improves mid-to-high-end horsepower, and unleashes a deep, crisp motorsport growl while minimizing the risk of permanent check-engine lights (CEL) compared to completely catless setups.

Crafted for Extreme Thermal Endurance Fabricated from heavy-duty 304 stainless steel, these downpipes are built to withstand the punishing heat directly off the S58 turbine housings. Expert TIG welding ensures structural integrity and absolute leak-free reliability under track conditions.

DETAIL

🔥 Key Feature

  • 200-Cell High-Flow Metallic Catalyst Delivers an optimal balance of environmental filtration and maximum exhaust gas velocity, drastically lowering backpressure over restrictive OEM catalysts.

  • Faster Turbo Spool & Increased Horsepower Eliminates major flow bottlenecks right at the turbochargers, resulting in quicker boost response, enhanced throttle agility, and stronger top-end power.

  • Aggressive S58 Sound Amplification Deepens the exhaust note, heightens turbo whistle, and brings out crisp burbles and cracks without causing unbearable drone.

  • Direct-Fit F97/F98 OE Layout Precision-engineered to match the factory S58 downpipe geometry, utilizing original mounting brackets and O2 sensor bungs for a seamless bolt-on installation.

  • Heavy-Duty 304 Stainless Steel Construction Built from premium corrosion-resistant stainless tubing to prevent warping, cracking, or fatigue under extreme exhaust temperatures.

  • Precision TIG-Welded Seams Hand-crafted with meticulous TIG welds to ensure smooth internal flow transitions and long-term durability.

spec
Fitment: BMW X3 / X4M
Engine:3.0L
System Type:Performance Downpipe with High-Flow Catalytic Converter
Warranty:3 Years
Welding:Precision TIG Welded
Material:Premium 304 Stainless Steel 
Installation:Direct Bolt-On / Professional Installation Recommended
COMPANY VIDEO

We are a 15-year-old factory specializing in manufacturing high-quality automobile exhaust systems and accessories. Our product range includes exhaust manifolds, downpipes, cat-back exhausts, mufflers, electronic valves, exhaust tips, and other auto parts.

Why Choose Our Exhaust Systems?

☆ Perfect Fit: Manufactured according to the original car’s mounting holes, ensuring 100% installation compatibility.
☆ Experience & Expertise: With over 13 years in exhaust production and sales, we have molds for the most popular models, widely praised by our customers.
☆ Advanced Mufflers: Our factory-developed mufflers provide a silencing effect close to the original exhaust, delivering a comfortable driving experience.
☆ Electronic Valve Control: Equipped with our latest electronically controlled valves, allowing you to adjust the exhaust sound freely.
☆ Reliable Production & Delivery: Independently produced in our factory, with 100% order fulfillment and guaranteed delivery times.
☆ Customized Services: We offer tailored exhaust solutions for various car models according to your needs.

Our Expertise

For 15 years, we have specialized in manufacturing, producing, and selling automobile exhaust systems, with thousands of original exhaust models in our database. Our coverage includes brands such as:

Porsche | BMW | Mercedes-Benz | Audi | McLaren | Ferrari | Mitsubishi | Lamborghini | Bentley | Subaru | Aston Martin | Toyota | Volkswagen | Cadillac | Camaro | Dodge | Jaguar | Nissan | Alfa Romeo | Maserati

If you have a specific model and custom requirements, click here to inquire and contact us. We will provide professional solutions tailored to your vehicle.

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faq

  • What vehicles is this catback exhaust system compatible with?

    This catback exhaust system is specifically designed for BMW M340i (G20 chassis, 2019+) and BMW M440i (G22 chassis, 2021+) models equipped with the 3.0T B58 engine. It is not compatible with non-M340i/M440i 3 Series (G20) or 4 Series (G22) variants, or models with different engine configurations.

  • What does “catback” mean, and how is it different from other exhaust systems?

    This catback exhaust system is specifically designed for BMW M340i (G20 chassis, 2019+) and BMW M440i (G22 chassis, 2021+) models equipped with the 3.0T B58 engine. It is not compatible with non-M340i/M440i 3 Series (G20) or 4 Series (G22) variants, or models with different engine configurations.

  • What performance benefits will I gain from installing this catback exhaust?

    This catback exhaust system is specifically designed for BMW M340i (G20 chassis, 2019+) and BMW M440i (G22 chassis, 2021+) models equipped with the 3.0T B58 engine. It is not compatible with non-M340i/M440i 3 Series (G20) or 4 Series (G22) variants, or models with different engine configurations.

  • Is this exhaust system street-legal? Does it comply with emissions laws?

    This catback exhaust system is specifically designed for BMW M340i (G20 chassis, 2019+) and BMW M440i (G22 chassis, 2021+) models equipped with the 3.0T B58 engine. It is not compatible with non-M340i/M440i 3 Series (G20) or 4 Series (G22) variants, or models with different engine configurations.

  • Can I install this exhaust myself, or do I need a professional?

    This catback exhaust system is specifically designed for BMW M340i (G20 chassis, 2019+) and BMW M440i (G22 chassis, 2021+) models equipped with the 3.0T B58 engine. It is not compatible with non-M340i/M440i 3 Series (G20) or 4 Series (G22) variants, or models with different engine configurations.

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