SKU: 13410957228

aFe Large Bore-HD 5 IN 409 Stainless Steel DPF-Back Exhaust System w/Polished Tip (49-43090-P)

Sale price$264.62 Regular price$294.02
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Description

aFe Large Bore-HD 5 IN 409 Stainless Steel DPF-Back Exhaust System w/Polished Tip (49-43090-P)Large Bore HD 409 SS DPF Back Exhaust System with Single Side Exit (49 43090 P) by aFe. Exhaust System Type: DPF Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 5". Exhaust System Sound: Moderate. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD DPF Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from mandrel

Large Bore HD 409 SS DPF-Back Exhaust System with Single Side Exit (49-43090-P) by aFe. Exhaust System Type: DPF-Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 5". Exhaust System Sound: Moderate. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD DPF-Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from mandrel-bent stainless steel for maximum flow and long-lasting durability.

A performance exhaust system is one of the most common ways of improving a vehicle's operation. The theory is simple; just reduce restriction to increase exhaust flow and you gain power. But all exhaust systems are not created equal; in reality there's more to it than just selling some sewer pipe sized tubes.

aFe tests its systems on the flow bench and the dynamometer to determine the right pipe size. Then they mandrel bend the pipes to ensure they maintain their shape and size throughout the entire length, to provide smooth, unrestricted airflow. Tubes that are not mandrel bent can lose up to 20% of their diameter in sharp bends. A typical aFe system will increase exhaust flow by up to 29% and lower EGT (Exhaust Gas Temperature) by up to 100 , with a corresponding improvement in power and performance.

But performance is only part of the equation. A quality exhaust system should be easy to install and made to last. The pipes of the Large Bore HD system are constructed from durable 409 stainless steel. To ensure a tight seal, slotted and swedged ends are used whenever possible. When used with the supplied premium quality band clamps, the tightest, leak-free seal is the result. Every hanger is thoroughly welded on each side to ensure a strong attachment and the hangers also feature swaged bayonet ends to lock in place once installed. The factory mounting locations are used throughout and a 2-piece tailpipe facilitates adjustment.

Every system comes with clamps, hangers and detailed instructions to guide you through the installation. The Large Bore HD Exhaust System is made in USA.

aFe (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market.

Features:

  • Constructed Of Mandrel Bent Stainless Steel
  • Increased Flow And Performance
  • High Quality Band Clamps
  • OE Style Bayonet Hangers
  • Hassle-Free Installation
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13410957228

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A. Baidas
Bozeman, US
★★★★★ 5
Worth every penny
Great profuct. Exact fit. Comes with instructions. Took me about 6 minutes to take off the old ones and put the new ones in. Gave my 335i an aggressive look. Will definitely be buying more from this seller!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2019
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Neil
Pawtucket, US
★★★★★ 5
Perfect Fit
Very easy to install and looks great, the prefect addition
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Reviewed in the United States on July 6, 2021
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Verified Purchase
Hugo Cardenas
San Leandro, US
★★★★★ 5
Fits and looks good
Model: E46-4door, Size: Double Slats-Glossy Black
Fit great, looks good. Would recommend for e46
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Reviewed in the United States on April 17, 2026
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Prince
West Palm Beach, US
★★★★★ 5
Product as described!
Product as described. Nice snug fit for the 325ci!
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Reviewed in the United States on December 8, 2025
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Kevin
Port Orchard, US
★★★★★ 3
Doesn’t fit face lift sedan
Model: E46-4door, Size: Double Slats-Glossy Black
Did not fit 2004 330i sedan is a face lift looks nice
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Reviewed in the United States on May 9, 2026

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