Magnaflow #642-15594 Axle-Back Exhaust System 2011 Mustang GT 5.0L Competition Series 3.0" Dia. Tubing Dual Rear Exit No Mufflers 4" Tips

Magnaflow #642-16399 Tru-X Pipe with Converters 2011 Mustang GT 5.0L With Metallic Spun Converters Off-road use only

Magnaflow #642-16400 Tru-X Pipe without Converters 2011 Mustang GT 5.0L Off-road use only

American Racing 2011 5.0L GT 1 3/4" Headers w/Offroad Mid Pipe

American Racing 2011 5.0L GT 1 7/8" Headers w/Offroad Mid Pipe

Through stock mufflers and mid pipes (and no tuning) power was up 32 RWHP. We were blown away and so will you!

Your 2011-12 Mustang GT 5.0, Shelby GT500 or Boss 302 packs a thoroughbred of an engine, why bottle it up with restrictive, wimpy-sounding stock mufflers? Unleash the Pony within, with a Loud Mouth™ rear-axle back exhaust system from SLP Performance Parts

Additional 3+ HP with XO-Pipe (for GT 5.0L Only)

Designed to fit the 2011-2013 Mustang GT Coupe

2011 Ford Mustang 5.0L Headers and Complete Exhaust System. Headers are 1 3/4" x 3" with a 3" High Flow Catalyst Equipped H-Pipe and a Kooks Racing 3" Cat-Back Exhaust that includes Mandrel bent 3" Over the Axle Tubing. Entire System is made in Aircraft..

The Mustang GT 5.0L Headers are also made with 1-3/4" Primaries which all flow into a 3" Merge Collector to mate with your choice of X-Pipe from Kooks.

Kooks 2011 Mustang GT 5.0L 3" x 2-3/4" Catted H pipe **For use with Kooks headers with 3" Collectors**

Kooks 2011 Mustang GT 5.0L 3" x 2-3/4" Off Road X pipe **For use with Kooks headers with 3" Collectors**

•50-State legal •3" Street Tru-X Pipe •Clamps on behind OEM converter •Delivers a Smooth, Deep Tone •100% Stainless Steel •Dyno Proven •Lifetime Warranty

-No negative impact on emission devices -Hollow chamber yields higher airflow -Fits both Ford factory and Roush rear valance

2011 Mustang GT headers with 1-7/8" primary tubes, 3" X-Pipe, 3" dia lead pipes and high flow catalytic converters that mate to the factory connection point.

Stainless Works 3" Off Road X-Pipe