CORSA Performance 14317 Xtreme Axle-Back Exhaust for 11-14 Ford Mustang GT/Boss

Vehicle Fitment

• 2011-2014 Ford Mustang GT (5.0L V8, RWD)
• 2011-2013 Ford Mustang Boss 302 (5.0L V8, RWD)

Features

• 3.0" mandrel-bent stainless steel tubing for optimized flow
• Chambered mufflers delivering an aggressive, race-inspired tone
• Dual rear exit with single 4.0" polished Pro-Series tip
• RSC® Reflective Sound Cancellation for drone-free cruising
• Delivers +7 hp and +4 lb-ft torque over stock
• Approximately 150% flow increase and ~18-20 lb weight reduction
• Bolt-on installation - no welding or cutting required
• Limited lifetime warranty; proudly made in USA

Specifications

• Material: 304 stainless steel
• Tube diameter: 3.0" mandrel-bent
• Tip diameter: 4.0" polished Pro-Series single exit
• Muffler style: Chambered with RSC® technology
• Drivetrain: Rear-wheel drive only
• Weight savings: ~18-20 lb lighter versus factory exhaust

Included Components

• 1x Left axle-back muffler section
• 1x Right axle-back muffler section
• 1x 4.0" polished Pro-Series tip
• Stainless steel clamp hardware
• Installation instructions

Product Description

The CORSA Performance 14317 Xtreme Axle-Back Exhaust is engineered for 2011-2014 Mustang GT and 2011-2013 Boss 302 models (5.0L V8, RWD). Crafted from premium 304 stainless steel with 3.0" mandrel-bent tubing and chambered mufflers, this system significantly improves exhaust flow - up to ~150% - while shedding approximately 18-20 lbs versus stock.

Featuring CORSA's patented RSC® (Reflective Sound Cancellation) technology, the 14317 delivers an aggressive, race-inspired exhaust note under throttle without drone during cruise. Performance gains of +7 hp and +4 lb-ft of torque, combined with a sleek single 4.0" polished Pro-Series tip, make this a perfect upgrade for Mustang enthusiasts seeking both power and style.

Installation is hassle-free with a direct bolt-on fit - no welding or cutting required. Includes all necessary clamps and instructions, and comes backed by a limited lifetime warranty. Fitment is confirmed through 2014; 2015-2025 coverage is unconfirmed. Not compatible with non-V8, AWD, GT500, EcoBoost, or post-2014 convertible models.