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  • For Off-Road Use Only
    Black Bandit Race Exhaust GM Duramax 6.6L Down-pipe Back Race Exhaust (2001-2007)
  • For Off-Road Use Only
    Black Bandit Race Exhaust Copy of GM Duramax L5P 4" Down-pipe Back Race Exhaust 2017-2023
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GM Duramax 6.6L Down-pipe Back Race Exhaust (2001-2007)

Sku: ESSS-GM-01-4

This product fits:

2001-2007 Chevy Duramax LB7 / LLY / LBZ Silverado 2500HD / 3500HD Pickup
2001-2007 GMC Duramax LB7 / LLY / LBZ Sierra 2500HD / 3500HD Pickup
$797.50
$440.00
-45%
Shipping calculated at checkout.
Size: 4" Stainless Steel

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Within the device vehicle info section, look for the value with the text containing "14C204":
HC3A-14C204-ABH

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Please note: All sales of exhaust pipes, straight pipes, and engine pipes are final and Non-Returnable and Non-Refundable

Black Bandit Series 3 material image
T304 Stainless Steel

The Purest Stainless Steel used in Exhaust System Manufacturing

rust resistant icon

High Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 20+ years

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Looks Better

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T409 Stainless Steel

The Standard Stainless Steel used in Exhaust System Manufacturing

rust prone icon

Low Rust Resistance

Lasts up to 20+ years icon

Lasts Up To 5-8 Years

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Looks Dull

Attention

A 2022 Cummins Tune Package was added to your cart. This tune is a beta tune that may cause the following:

  • Low power
  • Poor fuel mileage
  • Engine codes that may appear
  • Poor shifting characteristics

For a tested and proven tune, please view our Ram Cummins 6.7L All-in-One DPF/DEF/EGR Delete Kit w/ECM Swap (2022-2024)

Attention

You have added a product to your cart that requires the Service. This required additional service is NOT included in the price shown on TunerDepot.com. This means that you will be required to pay for the Service in addition to the product you have just added to the cart.

Introduction

The GM Duramax 6.6L Down-pipe Back Race Exhaust (2001–2007) is a direct-fit system for LB7, LLY, and LBZ trucks that opens exhaust flow from the turbo downpipe back. Choose 4" or 5" stainless to reduce backpressure, drop EGTs, and sharpen throttle response for off-road use. Keywords like LBZ Duramax exhaust and 2006 Duramax exhaust map cleanly to this fitment.

Features

  • 4" or 5" stainless steel downpipe-back configuration
  • Mandrel-bent tubing with OE-style hangers for secure, straightforward install
  • Race system: no bungs included; built for off-road calibration
  • Optional 4" or 5" muffler for sound control
  • Hardware and clamps included

Benefits

  • Power & torque: Freer flow vs. stock for stronger mid-range pull
  • Towing stability: Lower EGTs under sustained load
  • Drivability: Quicker spool and improved throttle response
  • Efficiency: Optimized flow can improve mpg with proper tune

Compatibility

  • Chevrolet Silverado / GMC Sierra 2500/3500HD, 6.6L Duramax
  • LB7: 2001–2004 (e.g., 2001/2002/2003 Duramax exhaust)
  • LLY: 2004.5–2005 (LB7 downpipe, LB7/LLY exhaust cross-interest)
  • LBZ: 2006–2007 (LBZ exhaust, LBZ downpipe back exhaust, LBZ 5 inch exhaust)

Note: It does not fit Cab & Chassis trucks.

Technical Specifications

  • Diameter options: 4" or 5"
  • Material: Stainless steel (mandrel-bent)
  • Layout: Turbo Downpipe-back to tail section
  • Included: Band clamps, hangers, and installation hardware
  • Emissions: Race-only; no sensor bungs
  • Sound: 5" flows and sounds louder than 4"; add muffler to reduce tone

Installation & Notes

  • Install difficulty: Moderate; bolt-on with basic tools; cutting old hardware may be required
  • Tuning: Race tuning required to realize gains and avoid DTCs
  • Legal: Off-road/competition use only.
  • Fit checks: Verify wheelbase, bed length and spare-tire clearance before final tighten

Frequently Asked Questions

Q: Will this fit my 2006 LBZ?
Yes. It’s a direct fit for 2006 Duramax exhaust applications on LBZ (non–Cab & Chassis).

Q: 4" vs 5"—which should I choose?
4" = easier fit and moderate sound. 5" = maximum flow and louder tone. Both support race tuning.

Q: Can I add a muffler?
Yes. Choose the matching 4" or 5" muffler option if you want quieter operation. BUY NOW ➤

Q: Does it include bungs for sensors?
No. This is a race exhaust with no bungs; calibration is required.

Q: Is tuning required?
Yes. Race tuning is needed after installing this LBZ downpipe-back exhaust / LB7 downpipe back exhaust to prevent codes and optimize performance.

Important Product Information

Off-Road Use Only: The products sold on this website are intended for off-road use only, and may not be legal for use on public highways where pollution control laws apply.

Check Local Laws: Before purchasing and installing any of these parts, please check your local and state laws to confirm whether the modifications are legal in your area.

Professional Installation Recommended: These kits and parts are strongly recommended to be installed by professional mechanics only. Improper installation may lead to performance issues or damage to your vehicle. Unless specified differently on the product page, our parts do not include installation instructions. They are intended for individuals with a proficient understanding of mechanical systems and procedures. Like many aftermarket parts compatible with a variety of vehicles, minor adjustments or modifications may be necessary during the installation process. We cannot accept returns or offer refunds on the basis of an inability to complete the installation due to the absence of instructions.

Warranty: The use of these parts will void the warranty of your vehicle. Please confirm with your vehicle manufacturer before purchase and installation.

No Liability: Tuner Depot is not responsible for any damage or issues that may arise from the use of these parts.

Product Images: Product images are for illustrative purposes only and may differ from the actual product due to manufacturer design changes or improvements.

No Performance Guarantees: While these parts are designed to enhance the performance of your vehicle, no guarantees are made regarding the specific performance gains that will be achieved.

Shipping Policy at Tuner Depot

At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're committed to ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.

Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you with a quick and efficient processing time. However, unforeseen circumstances beyond our control may occasionally impact shipping times.
Factors Affecting Shipping:
  • Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect delivery timelines. We will make every effort to minimize any delays.
  • Holiday Periods: Please note that our shipping center will be closed during holidays. We will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but rest assured, we will keep you informed every step of the way.
  • Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels, possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high standards of service.
We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we will utilize every resource available to deliver your performance parts promptly.