CORSA 14321BLK Sport Axle-Back Exhaust for 2013-14 Mustang Shelby GT500 5.8L

Vehicle Fitment

• 2013-2014 Ford Mustang Shelby GT500 (5.8L V8, RWD)

Features

• 3.0" mandrel-bent stainless steel tubing for high-flow performance
• Chambered mufflers tuned for sporty, aggressive tone
• Dual rear exit with quad 4.0" Black PVD Pro-Series tips
• Patented RSC® for no drone during cruise, aggressive under throttle
• Boosts power: +16 hp and +21 lb-ft torque
• ~43% increase in flow while shedding ~6 lb vs. stock
• Easy bolt-on installation with included clamps and instructions
• Limited lifetime warranty; made in the USA

Specifications

• Material: 304 stainless steel
• Pipe diameter: 3.0" mandrel-bent
• Tip finish: Black PVD, quad 4.0" Pro-Series
• Muffler style: Chambered with RSC®
• Weight reduction: ~6 lb lighter than OEM
• Flow gain: ~43% over factory
• Drivetrain: Rear-wheel drive only
• Fitment years: 2013-2014 only

Included Components

• 1x Left axle-back muffler assembly
• 1x Right axle-back muffler assembly
• 2x 4.0" Black PVD Pro-Series exhaust tips
• Installation hardware kit (clamps & bolts)
• 1x Printed installation instructions

Product Description

The CORSA Performance 14321BLK Sport Axle-Back Exhaust is crafted for 2013-2014 Mustang Shelby GT500 owners looking for bold sound and performance. Precision-crafted from 304 stainless steel with 3.0" mandrel bends and chambered mufflers, this system boosts exhaust flow by about 43% and trims approximately 6 lb from the rear end.

Featuring quad 4.0" Black PVD Pro-Series tips and CORSA's patented RSC® (Reflective Sound Cancellation) technology, it delivers a deep, aggressive exhaust note under throttle while remaining drone-free at cruise speeds. The result? +16 hp and +21 lb-ft of power in a sleek, stealth-black package.

Designed for hassle-free installation, the 14321BLK is a direct bolt-on, no-weld solution that includes all necessary hardware and instructions. Covered by a limited lifetime warranty and built in the USA, this axle-back exhaust is tailored exclusively for the 2013-2014 Shelby GT500; compatibility beyond those years or with other Mustang variants is unconfirmed and not recommended.