• Gibson 3in Cat-Back Single Exhaust | GMC Sierra 5.7L (88-93) (615571L)
  • Gibson 3in Cat-Back Single Exhaust | GMC Sierra 5.7L (88-93) (615571L)
  • Gibson 3in Cat-Back Single Exhaust | GMC Sierra 5.7L (88-93) (615571L)
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Gibson 3in Cat-Back Single Exhaust | GMC Sierra 5.7L (88-93) (615571L)

Gibson 3in Cat-Back Single Exhaust | GMC Sierra 5.7L (88-93) (615571L)

615571L

Out of stock

$590.69 USD
$1,335.37 USD $590.69 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Gibson 88-93 GMC C3500 Sierra 5.7L 3-inch Cat-Back Single Exhaust is a high-performance exhaust system designed to enhance engine output and overall vehicle performance. Constructed from durable stainless steel, this exhaust system features a single side exit behind the rear tire, providing a sleek and professional appearance. It is engineered to improve acceleration, hill climbing, towing capacity, and passing power, making it an ideal upgrade for enthusiasts seeking increased low-end torque and horsepower. Dyno testing indicates gains of 10-15 horsepower and 15-20 lb-ft of torque, with quieter operation inside the cab compared to other performance exhausts. The system offers hassle-free, bolt-on installation without welding, ensuring a clean, professional look and reliable performance.

This exhaust system is specifically designed for 1988-1993 GMC C3500 Sierra models equipped with a 5.7L engine. It is a direct bolt-on replacement that fits seamlessly with the factory exhaust mounting points. Suitable for street and towing applications, this system enhances both daily driving and performance driving experiences. The kit includes all necessary components for installation, providing a straightforward upgrade for owners looking to maximize their truck’s power and sound. No modifications are required, making it an accessible upgrade for both amateur and professional installers.

Overview

Gibson Exhaust Systems

Fits 1988–1993 GMC C3500 Sierra 5.7L

Part #: 615571L

Overview

The Gibson 88-93 GMC C3500 Sierra 5.7L 3-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 perfect balance of strength, corrosion resistance, and a sleek appearance. It is ideal for truck owners seeking improved acceleration, towing capacity, and hill-climbing ability, all while maintaining a quieter cabin environment compared to other performance exhausts. This system is engineered to support your vehicle’s power output and provide a more engaging driving experience without sacrificing comfort or reliability.

Key Features

This exhaust system features a straightforward bolt-on design that requires no welding, making installation hassle-free for most enthusiasts and professional installers alike. The system exits behind the rear tire, optimizing exhaust flow and enhancing your vehicle’s performance. Constructed from high-quality stainless steel, it resists rust and corrosion, ensuring long-lasting durability. The design helps maximize low-end torque and horsepower, with dyno tests showing gains of 10-15 horsepower and 15-20 lb-ft of torque, particularly in the 1800 to 3000 RPM range. The system’s quieter operation in the cab makes it suitable for daily driving while still delivering a robust exhaust note outside the vehicle.

Construction & Design

Built from premium stainless steel, this exhaust system combines strength with corrosion resistance. The seamless construction and precision bends ensure optimal exhaust flow and durability, supporting your vehicle’s performance and longevity.

Performance & Response

Designed to improve low-end torque and horsepower, this exhaust system helps your GMC C3500 Sierra deliver more responsive acceleration and towing power. The dyno results confirm noticeable gains in power output, enhancing overall driving confidence.

Installation & Fitment

The bolt-on design allows for straightforward installation without welding, making it accessible for DIY enthusiasts and professional mechanics. Proper fitment behind the rear tire ensures a clean, professional look and optimal performance.

What’s Included

The package includes the stainless steel cat-back exhaust system, clamps, and all necessary hardware for a complete installation.
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