AFE Large Bore-HD 4" 409 Stainless Steel DPF-Back Exhaust System 20-25 GM 6.6L Duramax
SKU: 52512523351

AFE Large Bore-HD 4" 409 Stainless Steel DPF-Back Exhaust System 20-25 GM 6.6L Duramax

Sale price$327.24 Regular price$363.60
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

AFE Large Bore-HD 4" 409 Stainless Steel DPF-Back Exhaust System 20-25 GM 6.6L DuramaxDont hide the power of your engine behind a basic exhaust, upgrade to an exhaust that results in increased horsepower, improved throttle response, hassle free installation, and durable construction. What exhaust is this? Well, its aFes Large Bore HD 4 409 Stainless Steel DPF Back Exhaust, specially made for your Duramax. What are the benefits? Reliability and durability, which will save you time and money in the long run by avoiding replacing your

Don’t hide the power of your engine behind a basic exhaust, upgrade to an exhaust that results in increased horsepower, improved throttle response, hassle free installation, and durable construction. What exhaust is this? Well, its aFe’s Large Bore-HD 4” 409 Stainless Steel DPF-Back Exhaust, specially made for your Duramax. What are the benefits? Reliability and durability, which will save you time and money in the long run by avoiding replacing your exhaust system. Not only that, but you can fly down the road in your truck with increased horsepower! What else is there to offer?

4" 409 Stainless Steel Construction:

This DPF-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability.

Dual 5" Diameter Polished or Black Intercooled Exhaust Tips:

Finishing off this exhaust system are dual 5" diameter polished or black 304 stainless steel intercooled clamp-on exhaust tips. The tips features an aFe POWER logo plate riveted on for a unique style.

Installation:

Some cutting will be required, see instruction sheet for further information. Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation.

Integrated Mitered Merge Collector:

A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response.

Computer-Aided Design:

Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment.

MIG-Welded:

100% MIG-Welded for race-proven strength and durability.

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: 52512523351

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4.2 ★★★★★
Based on 1396 reviews
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Lynnette
Whiting, US
★★★★★ 5
Not too thick and durable and sturdy.
Color: Rustic Brown, Size: 24"W x 6.7"D, 3 Pack
Just before I purchased these 3 I bought 2 sets of 2 larger ones. The color is exactly what I was needing. They are packaged together so no scratches or damage. My husband (the installer) says they are easy enough to install. They are perfect for a diy update, durable and hold plenty of weight for their size. Happy happy customer
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Reviewed in the United States on May 8, 2026
J
Verified Purchase
Jose
Louisville, US
★★★★★ 5
Good quality for the price
Color: Black, Size: 30"W x 6.7"D, 3 Pack, Color: Black, Size: 30"W x 6.7"D, 3 Pack
Seamless floating shelves that look and feel great. I opted to use different drywall anchors since I didn't trust the ones that came with the product. I have bad drywall and no studs where I was mounting so that doesn't fall back onto the product. The shelves are true to size and have held up great. The shelves themselves aren't too heavy so it leaves some room to add weight onto them. I used the 30in long shelf on the left and 24in long shelf on the right to create a nice corner shelf. There are additional screws on the bottom the keep the shelves from moving off the bracket.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
J
Verified Purchase
josseline m.
Massapequa, US
★★★★★ 3
Be careful
Color: Oak, Size: 24"W x 6.7"D, 3 Pack, Color: Oak, Size: 24"W x 6.7"D, 3 Pack
They are nice but flimsy, not flush on the wall scared they might fall
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
C
Verified Purchase
Chanel
Grantham, US
★★★★★ 4
Beautiful for decor, not great for anything with heft.
Color: Oak, Size: 24"W x 6.7"D, 3 Pack, Color: Oak, Size: 24"W x 6.7"D, 3 Pack
They are easy to install and exactly as pictured. I find them to be lovely and uniform, and they can't with proper instructions and even extra pieces. I took away a star because they are described as "heavy duty" use, but the dowels used to mount the shelves are flimsy. Mine are mounted on combo of studs and drywall, the plates are secure and not going anywhere. The problem is the dowels themselves that fit into the corresponding holes of the shelf: they bend easily. I put three books and bookends on one shelf and watched it tip down. I did attach the bottom screws into the dowels I secure the shelf to the mounting brackets, but that's not going to save any items from sliding off as it bends down over time. I pulled the books immediately and decided to use these for decor only rather than any practical use. The stock photo suggesting lining these shelves with glass jars filled with flour, rice, and lentils is a terrible idea.
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Reviewed in the United States on August 12, 2025
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Great Looking Shelves
Color: Oak, Size: 24"W x 6.7"D, 3 Pack
We love the floating shelves. They were easy to install and matched our island perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026

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