Stainless Works 18+ Ford Mustang GT Redline Cat-Back Performance Connect H-Pipe w/ Active Valves

2018+ Mustang GT 5.0L, 3" Catback Dual Exhaust with H-pipe. Improve sound and performance on your Mustang GT with this Redline catback exhaust from Stainless Works. Redline series, designed to get the most aggressive sound out of your GT, we've designed these mufflers to maximize the volume and tone of that 5.0L V8 while still eliminating any drone in the cabin. Featuring the latest in active exhaust technology, our in-house engineered valve bolts directly to the factory electronics to allow for all exhaust modes. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. This system features dual-mode mufflers with a 3" valve assembly, with straight through "Track" mode and chambered "Quiet" mode. This is a quad tip exhaust, exiting through our 4" slash cut conical double wall polished tips. Includes hangers and clamps and mates to the performance connection point that mates with Stainless Works headers. This system is designed for vehicles with the Active Valve Performance Exhaust. Mill finish, All TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA. Not confirmed to fit convertibles.

Additional Information

2018-20 Mustang GT 5.0, 3" Dual Exhaust with H-pipe. Redline catback from Stainless Works. This system features dual-mode mufflers with a 3" valve assembly. This system is designed for vehicles with the Active Valve Performance Exhaust.

Part Type

Exhaust System Kit

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.

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Product Downloads

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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

Ford Mustang GT 2018+ Redline H-pipe Catback Exhaust with Active Valves. Performance Connection

Stainless Works Redline Performance Connect exhaust systems with H-pipes deliver improved sound and performance for your new Mustang muscle car. SW has engineered drone-free aggressive mufflers tuned specifically for the improved Coyote engine from Ford. The systems are built from corrosion-resistant 304 stainless steel and TIG-welded in their state-of-the-art facility. Stainless Works Redline Performance Connect exhaust systems with H-pipes are available for systems with or without active exhaust valves. Their in-house engineered valve bolts directly to the factory electronics to allow for all exhaust modes, from the closed valve "quiet" mode, to the chambered "normal" mode, and to the wide open straight-through design on "track" mode.

Stainless Works Redline H-pipe systems feature:
• Redline System—their most aggressive sound
• Performance Connect for a full 3 in. exhaust (to SW headers/exhaust)
• 3 in. mandrel-bent tubing offers improved flow over stock exhaust
• H-pipe crossover
• Tuned mufflers for aggressive muscle car sound
• Quad polished tips
• Slash-cut double-wall style
• Excellent fitment for easy installation
• 304 stainless steel
• TIG-welded for beauty and strength
• Lifetime warranty on materials and craftsmanship