Borla 60661 Resonator for 2018-2026 Ford Mustang GT 5.0L V8

NOT recommended for use on convertibles. This Resonator is designed to replace the Merge X-Pipe in select BORLA® Cat-Back systems to dampen the sound. Use ONLY with BORLA® systems. It is NOT designed to work with competitors or Original Equipment (O.E.) systems. The resonator contains an internal H-Pipe for increased performance and improved sound. It has dual 2.25"diameter inlets and dual 3" outlets. The resonator fits Vehicles With or Without Active Valve Exhaust. Built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA® stands behind every direct fit resonator with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Resonator 2018-2026 Ford Mustang GT 5.0L V8 Automatic/ Manual Transmission Rear Wheel Drive 2 Door With or Without Active Valve Performance Exhaust. NOT Recommend Convertible. Use ONLY With Borla Systems. 2018-2026 Ford Mustang GT 5.0L V8 Automatic/ Manual Transmission Rear Wheel Drive 2 Door With Or Without Active Valve Performance Exhaust. NOT Recommend For Convertible

• Fits vehicles with or without Active Valve Exhaust
• Replaces the Merge X-Pipe and dampens the sound
• Resonator contains an internal H-Pipe
• NOT recommended for Convertibles
• Use ONLY With BORLA® Systems

The Borla 60661 resonator is designed specifically for select Borla cat-back exhaust systems on 2018-2026 Ford Mustang GT models equipped with the 5.0L V8 engine. It replaces the system’s Merge X-Pipe to help dampen exhaust sound while maintaining strong performance and an aggressive exhaust character. The resonator includes an internal H-pipe that supports improved exhaust flow and enhanced sound balance.

This direct-fit resonator is compatible with Mustang GT vehicles using either automatic or manual transmissions, rear-wheel drive, and exhaust systems with or without Active Valve Exhaust. It features dual 2.25-inch inlets and dual 3-inch outlets for compatibility with the intended Borla system configuration. The Borla 60661 is not recommended for convertible models and is not designed for use with competitor or original equipment exhaust systems. Use only with compatible Borla systems.

Constructed from premium T-304 stainless steel, the resonator provides excellent corrosion resistance and long-term durability compared with lower-grade T-400 series materials such as 409 stainless steel. Ultra-smooth mandrel bends help preserve exhaust flow, while precision CNC manufacturing supports an accurate fit and dependable installation. Borla backs this direct-fit resonator with a Million-Mile Warranty, reflecting the brand’s focus on performance and durability.

What's Included

• Borla 60661 resonator
• Application-specific resonator assembly for compatible Borla cat-back systems

Fitment: 2018-2026 Ford Mustang GT with 5.0L V8, automatic or manual transmission, rear-wheel drive, and two-door coupe body style. Fits vehicles with or without Active Valve Exhaust. Not recommended for convertibles. Use only with compatible Borla systems.

Features:

• Application-specific fit: Designed to replace the Merge X-Pipe in select Borla cat-back exhaust systems for 2018-2026 Ford Mustang GT models with the 5.0L V8.
• Sound control and performance: Dampens exhaust sound while the internal H-pipe supports improved performance and a balanced exhaust tone.
• Premium T-304 stainless steel: Provides strong corrosion resistance and durability for long-term exhaust system performance.
• Precision-flow construction: Ultra-smooth mandrel bends and CNC manufacturing help maximize exhaust flow and promote an accurate direct-fit installation.

Fitments:
2018 Ford Mustang GT
2018 Ford Mustang GT Premium
2019 Ford Mustang Bullitt
2019 Ford Mustang GT
2019 Ford Mustang GT Premium
2020 Ford Mustang Bullitt
2020 Ford Mustang GT
2020 Ford Mustang GT Premium
2021 Ford Mustang GT
2021 Ford Mustang GT Premium
2021 Ford Mustang Mach 1
2022 Ford Mustang GT
2022 Ford Mustang GT Premium
2022 Ford Mustang Mach 1
2023 Ford Mustang GT
2023 Ford Mustang GT Premium
2023 Ford Mustang Mach 1
2024 Ford Mustang Dark Horse
2024 Ford Mustang Dark Horse Premium
2024 Ford Mustang GT
2024 Ford Mustang GT Premium
2025 Ford Mustang Dark Horse
2025 Ford Mustang Dark Horse Premium
2025 Ford Mustang GT
2025 Ford Mustang GT Premium
2026 Ford Mustang Dark Horse
2026 Ford Mustang GT
2026 Ford Mustang GT Premium

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Regular Stock: t
Units Per Sku: 1