Cat-Back Exhaust

This cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. This system features a high-flow 409 stainless steel muffler, producing a deep sound. Finishing off this exhaust system is a 5" diameter black 409 stainless steel intercooled clamp-on exhaust tip. The tip features an aFe POWER logo plate riveted on for a unique style. This system produces a deep sound unleashing all available horsepower and torque. Utilizing a factory style flange and hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation. Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability.

Additional Information

Apollo GT Series 4 IN 409 Stainless Steel Cat-Back Exhaust System w/ Black Tip GM 2500/3500HD 20-26 V8-6.6L L8T

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

• 100% MIG-Welded for Strength and Durability
• 5" Diameter Black 409 Stainless Steel Intercooled Clamp-On Exhaust Tip
• All Necessary Hardware is Included for a Hassle-Free Installation
• Constructed from 4" Mandrel-Bent 409 Stainless Steel Tubing
• Utilizes Factory Style Flange and Hangers for a Secure Fit

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Exhaust Systems, Apollo GT, Cat-Back, 409 Stainless Steel, 4.00 in. Pipe, Muffler, 5.00 in. Black Intercooled Tip, Chevrolet, GMC, 6.6L, Gas, Kit

aFe Apollo GT exhaust systems are constructed of mandrel-bent 409 stainless steel and come complete with free-flowing muffler(s), OE-style bayonet hangers, and all necessary hardware for a hassle-free installation. Their smooth curves and large diameter tubes help reduce restriction and keep exhaust gas flowing smoothly for increased horsepower and torque. aFe Apollo GT cat-back exhaust systems are 100 percent MIG-welded for race-proven strength and durability and are finished with polished or black stainless steel exhaust tip(s) with a laser-cut aFe POWER badge for a custom look.