• Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)
  • Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)
  • Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)
  • Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)
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Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)

Gibson 3.5in Single Cat-Back Exhaust | GMC Sierra 1500 Denali (11-13) (615625)

615625

Out of stock

$707.80 USD
$1,600.10 USD $707.80 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Gibson 11-13 GMC Sierra 1500 Denali 6.2L 3.5-inch Cat-Back Single Exhaust is a high-performance stainless steel exhaust system designed to enhance vehicle power and efficiency. Engineered for improved acceleration, hill climbing, towing, and passing power, this exhaust delivers significant gains in low-end torque and horsepower, with dyno tests showing increases of 10-15 horsepower and 15-20 lb-ft of torque within the 1800 to 3000 RPM range. Its single side exit behind the rear tire provides a professional appearance while maintaining a quieter cabin environment compared to other performance exhausts. The system is constructed for durability and optimal flow, ensuring maximum performance benefits without sacrificing comfort or sound quality.

This exhaust system is specifically designed for 2011-2013 GMC Sierra 1500 models equipped with the 6.2L engine. It offers a hassle-free bolt-on installation that requires no welding, making it suitable for both DIY enthusiasts and professional installers. The kit includes all necessary components for a straightforward upgrade, providing a clean, aggressive look and sound. Ideal for street performance, towing, and daily driving, this exhaust system enhances the vehicle’s overall power output and aesthetic appeal, serving as a direct replacement for the stock setup to maximize performance and durability.

Overview

Gibson Exhaust Systems

Fits 2011–2013 GMC Sierra 1500 Denali 6.2L

Part #: 615625

Overview

The Gibson 11-13 GMC Sierra 1500 Denali 6.2L 3.5-inch Cat-Back Single Exhaust is designed to enhance your truck’s performance and sound profile. Crafted from durable stainless steel, this exhaust system offers a combination of strength, corrosion resistance, and a sleek appearance. It is ideal for truck enthusiasts seeking improved acceleration, towing capacity, and a more aggressive exhaust note. The system is engineered to optimize exhaust flow, supporting maximum low-end torque and horsepower gains, making your vehicle more responsive and capable during demanding driving conditions. This exhaust system is tailored for those who want a hassle-free upgrade that combines performance with a professional finish. Its bolt-on design ensures straightforward installation without welding, allowing you to upgrade your vehicle quickly and confidently. Whether you're looking to improve towing power or simply want a more commanding sound, this system delivers reliable performance and a refined look.

Key Features

This Gibson exhaust system features a thoughtfully designed layout that maximizes exhaust flow and durability. Key features include:
  • Constructed from high-quality stainless steel for corrosion resistance and longevity
  • 3.5-inch diameter pipe for optimal exhaust flow and performance
  • Single side exit behind the rear tire for a clean, aggressive appearance
  • Engineered to improve low-end torque and horsepower, with typical gains of 10-15 HP and 15-20 lb-ft of torque
  • Quieter in-cab sound compared to other performance exhausts, providing a refined driving experience
  • Hassle-free bolt-on installation with no welding required
  • Backed by Gibson’s reputation for quality and performance

Construction & Design

The exhaust system is manufactured from premium stainless steel, ensuring durability and resistance to rust and corrosion. Its precise mandrel bends promote smooth exhaust flow, reducing backpressure and enhancing overall efficiency. The design maintains a sleek, professional appearance that complements the rugged styling of your Sierra Denali.

Driving Feel & Feedback

This system helps improve throttle response and engine efficiency, resulting in a more engaging driving experience. The optimized exhaust flow supports better low-end torque, making hill climbing, towing, and passing smoother and more confident.

Installation & Fitment

Designed for direct bolt-on installation, this exhaust system requires no cutting or welding. It fits 2011–2013 GMC Sierra 1500 Denali models with a 6.2L engine, providing a straightforward upgrade that can be completed with basic tools.

What’s Included

The package includes all necessary components for a complete installation, ensuring a professional-looking result and reliable performance.
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