Exhaust Header For 1991-2004 GMC Sonoma and 1982-2004 Chevy S10 - High-Performance Stainless Steel Manifold
1 Offer
Exhaust Headers for Small Block Chevy Blazer S10 S15 283 302 350 - KSP Performance
1 Offer.jpg)
DriverPassenger Catalytic Converter compatible for Cadillac SRX 3.6L 2012-2016 EPA
1 Offer
2000 2001 2002 2003 2004 2005 2006 2007 Ford F250 F350 Super Duty 6.8L & 5.4L Catalytic Converter
1 Offer
Exhaust Header with Exhaust Reducers For 1965-1973 Chevy Chevelle, 1973-1974 Chevy Malibu 6.5L 6.6L 7.4L V8
1 Offer
2000-2006 BMW E46 320i 325i 330i Z3 Z4 M54 Exhaust Header Stainless Steel Performance Upgrade - KSP Performance
1 Offer
Exhaust Header For 2002-2007 Subaru Impreza WRX/STi Sedan/Wagon 4-Door 2.0L 2.5L
1 Offer
1994 1995 1996 1997 1998 1999 2000 2001 Dodge Ram 1500 2500 3500 3.9L 5.2L 5.9L Catalytic Converter
1 Offer
Chevy Small Block Headers for 1935-1948, Performance Stainless Steel Exhaust, +20HP - KSP Performance
1 Offer.jpg)
EGR Valve Cooler compatible for Nissan Pathfinder R51 2.5 dCi 4WD SUV 2010-2012 14735-5X00B
1 Offer
Exhaust Headers for 1960–1986 Chevy C10 & GMC Trucks LS Swap LS1 LS2 LS3 LS6 LS9
1 OfferExhaust 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.