MagnaFlow 16674 Competition Series Stainless Cat-Back Exhaust System for 2005-2009 Ford Mustang 4.6L/5.4L

The MagnaFlow 16674 Competition Series Cat-Back Performance Exhaust System brings an aggressive edge to the resonant note of your 2005-2009 Ford Mustang 4.6L/5.4L with dyno-proven performance.

Features fast-flowing 3" mandrel-bent main piping and 2 straight-through mufflers ending in a Dual Split Rear exit with 4" Polished Welded-On Double Wall Angle Cut Folded Edge tips (sporty finish). Produces Aggressive exterior and Moderate interior sound levels (check local noise regulations).

Axle-back? No, cat-back design replaces stock from near catalytic converter rearward. 3D scanning for direct-fit. 409 stainless steel with mandrel-bent tubing, CNC robotic manufacturing. Limited lifetime warranty. Increased horsepower and torque.

Key Features & Specs:

• 3" mandrel-bent 409 stainless steel piping
• 2 straight-through mufflers
• Dual Split Rear exit
• 4" polished welded-on double wall angle cut folded edge tips
• Aggressive exterior / Moderate interior sound
• Dyno-proven performance with increased HP/torque
• Direct-fit design
• CNC robotic manufactured
• Limited lifetime warranty