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Flowmaster
In Stock·Free Ship
87-93 Ford Mustang GT 5.0L 2.50in Outlet Super 44 Series Mufflers American Thunder DOR Mandrel Bent Tubing 16 Gauge Aluminized Steel
Warranty
2500, 2500HD, 439
$749.95$877.71
Shop Exhaust System Kit at Yittzy
Browse our selection of 1,492+ exhaust system kit in Exhaust and Tail Pipesfor Jeep Wrangler, Gladiator, Cherokee, and other models. Whether you're building a trail-ready rig or upgrading your daily driver, Yittzy carries exhaust system kit to fit every budget and style. Shop top brands including aFe Power, MagnaFlow Exhaust Products, MBRP Exhaust, Borla, UPR Products, and BRExhaust. Many items qualify for free shipping — your exact shipping cost is shown at checkout. Oversized items may require freight shipping. All orders include our hassle-free 30-day return policy.
Frequently Asked Questions
What is the difference between cat-back and axle-back exhaust?
A cat-back exhaust replaces everything from the catalytic converter to the tailpipe tip, providing the most power gain (5-15 HP) and the greatest sound change. An axle-back replaces only the muffler and tailpipe, primarily changing the exhaust note with minimal power gains. Cat-back systems cost $400-1,200 while axle-back systems run $200-500.
Will an aftermarket exhaust void my warranty?
Under the Magnuson-Moss Warranty Act, a cat-back exhaust cannot void your entire warranty. A dealer can only deny coverage if they prove the exhaust directly caused the specific failure. Cat-back systems do not modify emissions equipment and are generally considered safe for warranty. Header replacements that modify catalytic converters may affect emissions warranty coverage.
How much horsepower does an exhaust system add?
A quality cat-back exhaust typically adds 5-15 HP on the 3.6L Pentastar V6. Combined with a cold air intake and a tune, total gains reach 20-35 HP. The real benefit is improved throttle response and a more responsive driving feel. The power gains are more noticeable at higher RPMs than at idle or low-speed driving.
How loud is an aftermarket Jeep exhaust?
Sound levels vary significantly by brand. Borla produces a refined, deep tone suitable for daily driving. Flowmaster is more aggressive with a distinctive rumble. MagnaFlow sits in between with a smooth, moderate tone. Gibson exhausts tend toward the louder end. Most quality cat-back systems are noticeably louder than stock at acceleration but not obnoxiously loud at cruise.
