FALL OVERSTOCK SALE-SAVE UP TO50%
cart 0

BMW M340i 3.0T High-Flow Catalyst / Catless Downpipe

Original price was: $612.00.Current price is: $520.00.

Discount valid for 24 hours

Car Model

Material
Exhaust tips
Year
Make
Model
Engine
Clear selection
SKU: BMW M340i 3.0T Categories: , ,

Warranty service:3 years

Production cycle:10-15DAYS

Overview

High-Performance Downpipe Upgrade (High-Flow Catalyst / Catless Options)

For BMW M340i 3.0T (G20 / G21)

Turbo Downpipe Upgrade | Unrestricted Exhaust Scavenging | Deep B58 Turbo Spool & Aggressive Tone | Available in Premium 304 Stainless Steel

Unlock Maximum Turbo Spool, Enhanced Exhaust Flow & Peak Horsepower for Your BMW Performance Sedan.

Engineered specifically for the BMW M340i models equipped with the formidable 3.0T turbocharged inline-6 (B58) engine, this high-performance downpipe replaces the restrictive factory catalytic converter section right after the turbocharger. By utilizing smooth-flowing mandrel bends, precision TIG welding, and a larger-diameter piping layout, it drastically reduces turbo lag, lowers exhaust gas backpressure, and allows the B58 engine to breathe freely while unleashing a sharper turbo spool sound and a deeper exhaust note.

Available in a High-Flow Catalytic Version (to balance enhanced performance with emissions management) and a Catless Version (for maximum unrestricted track performance), each downpipe is built using High-Grade 304 Stainless Steel to withstand extreme exhaust temperatures and ensure a direct bolt-on fit to factory mounting locations.

DETAIL

🔥 Key Feature

  • Direct Turbo Downpipe Upgrade

    • Replaces the restrictive factory primary catalytic converter to optimize exhaust flow directly out of the turbocharger turbine housing.

  • Drastic Reduction in Backpressure

    • Significantly minimizes exhaust restriction, resulting in quicker turbo spool-up, improved throttle response, and noticeable gains in horsepower and torque.

  • High-Grade 304 Stainless Steel Construction

    • Built using premium stainless steel to provide exceptional durability, superior heat resistance, and long-lasting protection against cracking or corrosion.

  • Enhanced Exhaust Note & Turbo Sounds

    • Amplifies the distinct B58 straight-six tone, adding a deeper exhaust rumble and a much sharper, satisfying turbo spool and blow-off sound under acceleration.

  • Available in High-Flow Catalyst or Catless Configurations

    • Choose between a high-flow cat option for a balanced street setup or a fully catless option for maximum track performance.

  • Direct Bolt-On Fitment

    • Engineered precisely to match factory dimensions, sensor bungs, and hanger locations for a seamless installation without modifications.

spec
Fitment: BMW 340i
Engine:3.0L Turbocharged Inline-6 Engine (3.0T / B58)
System Type:Turbo Downpipe (High-Flow Catalyst / Catless Options)
Welding:Precision TIG Welded
Material:SUS304 Stainless Steel
Installation: Direct Bolt-On
Warranty: 3 Years
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.

logistics
点击这里

Review (0)

Leave a Reply

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.

You may also like

BMW 128ti F40 2.0T Catback Exhaust

BMW 128ti F40 2.0T Catback Exhaust

Discount valid for 24 hours

$1,179.00 $1,388.00
Add to cart
-15%
BMW 218i B38 f22 1.5T-Catback electronic valve exhaust system

BMW 218i B38 f22 1.5T-Catback electronic valve exhaust system

Discount valid for 24 hours

$999.00 $1,199.00
Add to cart
-17%
BMW M240i 3.0T B58 F22-Catback electronic valve exhaust system【Custom 89 tube】

BMW M240i 3.0T B58 F22-Catback electronic valve exhaust system【Custom 89 tube】

Discount valid for 24 hours

$1,499.00 $1,699.00
Add to cart
-12%
BMW M340I G20 3.0T-Catback electronic valve Titanium alloy exhaust system

BMW M340I G20 3.0T-Catback electronic valve Titanium alloy exhaust system

Discount valid for 24 hours

$1,499.00 $1,699.00
Add to cart
-12%
BMW 335 435 430-3.0T-F30 F32 F33 F34 F35 F36-Catback electronic valve exhaust system

BMW 335 435 430-3.0T-F30 F32 F33 F34 F35 F36-Catback electronic valve exhaust system

Discount valid for 24 hours

$1,199.00 $1,399.00
Add to cart
-14%
Hit enter to search or ESC to close