# Gibson 15-19 GMC Sierra 2500 HD Base 6.0L 3.5in/3in Cat-Back Dual Extreme Exhaust - Stainless

For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains. You can expect to experience gains on average of 15-20 horsepower. Gibson muffler provides a mean performance sound and complemented with polished Stainless Tip. Easy bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.

-   Baffled/Chambered Muffler; No Internal Packing
-   Polished Stainless Slash-Cut Clamp On Tips
-   Minimal Interior Drone - Aggressive Sound
-   Incl. All Hardware/Factory Style Hangers
-   Stainless Steel Mandrel Bent Tubing
-   Hassle Free Bolt-On Installation
-   Lifetime Limited Warranty
-   Superflow™ CFT Muffler

This Part Fits:

Year

Make

Model

Submodel

2015-2019

Chevrolet

Silverado 2500 HD

High Country

2011-2019

Chevrolet

Silverado 2500 HD

LT

2011-2019

Chevrolet

Silverado 2500 HD

LTZ

2011-2019

Chevrolet

Silverado 2500 HD

WT

2015-2019

Chevrolet

Silverado 3500 HD

High Country

2011-2019

Chevrolet

Silverado 3500 HD

LT

2011-2019

Chevrolet

Silverado 3500 HD

LTZ

2011-2019

Chevrolet

Silverado 3500 HD

WT

2015-2019

GMC

Sierra 2500 HD

Base

2011-2019

GMC

Sierra 2500 HD

Denali

2011-2019

GMC

Sierra 2500 HD

SLE

2011-2019

GMC

Sierra 2500 HD

SLT

2011-2014

GMC

Sierra 2500 HD

WT

2015-2019

GMC

Sierra 3500 HD

Base

2011-2019

GMC

Sierra 3500 HD

Denali

2011-2019

GMC

Sierra 3500 HD

SLE

2011-2019

GMC

Sierra 3500 HD

SLT

2011-2014

GMC

Sierra 3500 HD

WT

## Details

- **Price:** 2549.49 CAD
- **Vendor:** Gibson
- **Type:** Catback

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2549.49 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/gibson-15-19-gmc-sierra-2500-hd-base-6-0l-3-5in-3in-cat-back-dual-extreme-exhaust-stainless)
> Updated: 2026-06-28