2.5" Turbo Downpipe High-Flow Exhaust Universal Fit T3/T4 5-Bolt 90 Degree Bolt-On - KSP Performance
1 Offer
4xOxygen O2 Sensor compatible for Infiniti Q50 3.7L V6 2014-2017 2115007610 226931PM0A
1 Offer.jpg)
6.2L Exhaust Manifold compatible for Ford F-150 F-250 Super Duty 2010-2020 BC3Z9431DA
1 Offer.jpg)
.jpg)
Cast Iron Exhaust Manifold compatible for Chevrolet Captiva Sport 2.4L 2010-2012 W/Gaskets
1 Offer.jpg)
.jpg)
Secondary Air Injection Pump compatible for Buick LaCrosse 2.4L 2011 12634644 215-704
1 Offer.jpg)
EGR Valve compatible for Mercedes-Benz Sprinter 2500 3500 3.0L V6 2010-2021 6421401460 New
1 Offer.jpg)
Cast Iron Exhaust Manifold compatible for Jeep Cherokee L4 2.5L 1984-2000 Gasket Included
1 Offer.jpg)
.jpg)
.jpg)
Exhaust Upgrades: Sound, Flow and Staying Legal
Written by the PickupChain team · Last reviewed October 17, 2026
Most truck exhaust upgrades are about sound and a small gain in flow. Axle-back systems replace only the muffler and tips and are the simplest. Cat-back systems replace everything behind the catalytic converter and give a bigger change in sound and flow.
Emissions parts are a different matter. Catalytic converters, diesel particulate filters and EGR systems are required by federal law on road vehicles. Removing them is illegal for street use in all 50 states and can fail inspection. Only buy emissions parts that are listed as legal replacements for your state.
California and states that follow CARB rules require an Executive Order (EO) number for many aftermarket parts. Look for CARB-legal labels if you live there.
Frequently Asked Questions
+Cat-back or axle-back exhaust?
Axle-back systems are cheaper, quicker to install and mainly change the sound. Cat-back systems replace more piping, change sound and flow more noticeably and often add a little power.
+Will a new exhaust cause drone on the highway?
Some aggressive systems produce a low hum at cruising speed called drone. Look for systems with resonators or descriptions that mention reduced drone if you drive long distances.
+Do I need a tune after an exhaust upgrade?
A cat-back or axle-back exhaust does not require a tune. Headers and downpipes often do, and they may affect emissions compliance.