Ready to give your big rig a bold upgrade? Our 5-inch semi-truck exhaust stacks arenât just about styleâthey're about making a serious statement while improving performance under the hood.
Whether you're chasing a classic-looking, polished exhaust stack or you just want to boost airflow and durability, youâre in the right place.
Why Run 5" Exhaust Stacks on Your Semi?
Exhaust stacks move hot gases up and out of the cab area instead of under the trailer. That keeps heat and fumes away from your drivelineâand from you. It also frees up space under the chassis, which is especially useful if you're running a custom setup or auxiliary systems.
What Does a Bigger Pipe Size Do for Your Truck?
Stepping up to a 5-inch exhaust stack can help reduce back pressure. That means your engine doesnât have to work as hard to push exhaust outâso you get improved efficiency, smoother performance, and a deeper, throatier sound that turns heads at every stoplight. Itâs the perfect balance of airflow and tone.
4-Inch vs. 5-Inch Exhaust StacksâWhat's the Difference?
Great question. A
4-inch stack looks cleaner and more compactâideal for tighter builds or classic restorations. But if you want bigger visuals, louder sound, and freer flow, 5-inch stacks are where itâs at. Theyâve got that oversized, heavy-hauler vibe and can better support modified or high-horsepower engines.
What If the Exhaust Pipe is Too Small?
Simpleâyour engine chokes. A restricted exhaust can build backpressure that robs power and fuel efficiency. Thatâs why many owner-operators go with larger stacks and
smooth-bend elbows to keep airflow high and resistance low.
What Increases Flow Rate in a Stack?
Itâs a combo of things: pipe diameter, smooth mandrel bends,
straight-through mufflers (or no muffler at all), and polished inner walls. The smoother and straighter the path, the faster those gases moveâand the more power your engine keeps.
Find the Perfect Style Option:
- Miter Cut: sharp, angled tops with a classic big-rig silhouette.
- Curved: directs fumes backward for a cleaner cab experience.
- Flat Top: sleek and bold with no fuss.
- West Coast Turnout: bends outward to the side for a regional signature look.
- Bull Hauler: wide, aggressive, and impossible to miss.
- Straight Stack: raw and to the pointâjust chrome and flow.
Chrome-Polished & Built for the Long Haul
Shop for 5-Inch Exhaust Stack Tops at 4 State Trucks
These stacks are chrome-polished for a sleek-looking exterior that can match your other aftermarket add-ons, from heavy-duty front-bumpers, fenders, and hood trim to blind-mount visors and
heat sleeve wraps. Our 5-inch stacks have your back