Upgrade your 2015–2017 Ford Mustang GT 5.0L V8 Fastback with this 3.0-inch Cat-Back Exhaust System, featuring dual rear exit and 4.5-inch Single Polished Pro-Series Tips. Engineered for S550 Mustang GT enthusiasts, this system allows selectable sound levels—Xtreme or Sport—to match your driving style and engine setup.

Constructed with 3.0-inch mandrel-bent piping, the Cat-Back replaces the factory mid- and rear exhaust for improved flow, reduced backpressure, and a more aggressive V8 tone. Dual-wall, slash-cut polished tips provide a premium, performance-inspired rear appearance.

Sound Level Options:

• Xtreme Sound Level – Maximum aggression with 12 lbs weight savings. Includes XX-Pipe P# 14327 + Sport Axle-Back P# 14326. Not recommended for aggressive engine modifications due to high volume.

• Sport Sound Level – Controlled aggression with 7 lbs weight savings, ideal for pairing with engine modifications to manage overall exhaust volume. Includes XX-Pipe P# 14327 + Touring Axle-Back P# 14329.

The system is bolt-on, reusing factory mounting points for OEM-quality fitment without cutting or welding. It provides enhanced performance, aggressive sound, and premium styling in a single package.

Key Features

• Sound Levels: Xtreme or Sport

• 3.0" Mandrel-Bent Piping – Optimized for flow and performance

• Cat-Back Configuration – Replaces stock mid- and rear exhaust

• Dual Rear Exit Layout – Retains OEM alignment

• 4.5" Single Pro-Series Tips – Dual-wall, slash-cut, polished finish

• Weight Savings: Xtreme (-12 lbs), Sport (-7 lbs)

• Bolt-On Installation – No cutting or welding required

• Includes Components: XX-Pipe + Axle-Back per sound level

Performance Benefits

• Aggressive, deep V8 exhaust tone

• Reduced backpressure and improved throttle response

• Lightweight design for better vehicle dynamics

• Sport version optimized for pairing with engine modifications

• Bold, premium rear styling with polished tips

Vehicle Fitment

• 2015 Ford Mustang GT 5.0L V8 – Fastback

• 2016 Ford Mustang GT 5.0L V8 – Fastback

• 2017 Ford Mustang GT 5.0L V8 – Fastback

This 3.0" Cat-Back Exhaust System is perfect for Mustang GT owners seeking a high-performance, versatile exhaust upgrade with selectable sound levels, weight savings, and OEM-quality installation.