If you're thinking about installing exhaust stacks for pickup trucks, you're likely looking for that classic semi-truck aesthetic and a roar that standard tailpipes just can't deliver. It's a bold move that completely changes the profile of your vehicle, moving the exit point of your engine's breath from under the rear bumper to right behind the cab. While it's a popular mod in the diesel community, there is a lot more to it than just cutting a hole in your truck bed and hoping for the best.
Choosing to go with stacks is a statement. For some, it's about keeping soot off their trailers or the side of their shiny paint job. For others, it's strictly about the sound—that deep, guttural thrum that vibrates through the chassis. Whatever your reason, you want to make sure you're picking the right setup for your specific rig and lifestyle.
The Different Styles You'll See on the Road
When you start shopping around, you'll realize that "exhaust stacks" isn't just one single look. There's actually a surprising amount of variety in how the tips are cut and how the pipes are finished.
The Classic Mitre Cut
This is probably the most common style you'll see. A mitre cut is basically a pipe cut at a sharp 45-degree angle. It looks aggressive and clean, pointing the exhaust flow up and slightly back. It's the go-to for people who want that sharp, pointed look that sits just a few inches above the cab line.
Bull Haulers and Aussie Cuts
If you want something a bit more flamboyant, bull haulers curve outward at the top. They're called that because they resemble the stacks seen on cattle-hauling semis. On the other hand, Aussie cuts curve out and then back down slightly. These are great if you're worried about rain getting into your pipes, but they definitely take up more visual "space" in the bed.
Straight Cuts and Hood Stacks
Straight cuts are exactly what they sound like—flat across the top. They're simple, no-nonsense, and usually finished with a rain cap (those flappers that click-clack when the engine is idling). Then there are hood stacks, which exit directly through the hood. Those are usually reserved for dedicated drag trucks or sled pullers since they're loud, messy, and generally not street-legal.
Thinking About Bed Space and Practicality
One thing people often forget when they're dreaming of big chrome pipes is that you have to give something up to get them. Exhaust stacks for pickup trucks require a sacrifice of bed space.
The most common setup involves a "Y-pipe" or a "T-pipe" that sits on the floor of your truck bed. This plumbing connects the exhaust from under the truck to the vertical stacks. Depending on the diameter of the pipes—usually anywhere from 5 to 8 inches—you could be losing a significant chunk of your hauling capacity right against the cab. If you use your truck for work and regularly haul plywood or heavy equipment, you'll need to measure carefully to see if you can still fit your cargo.
Also, consider the heat. Those pipes get incredibly hot. If you're throwing groceries or gear into the bed, you have to be careful they don't touch the stacks, or you'll end up with melted plastic or a fire hazard. Many guys end up building a small cage or a headache rack around the stacks just to prevent accidental contact.
Let's Talk About the Noise
Let's be real: nobody installs stacks because they want a quiet ride. By moving the exhaust exit from the back of the truck to right behind your head, the "drone" inside the cab increases significantly.
At highway speeds, that constant hum can be a bit much for some people. If your truck is a daily driver and you spend hours on the interstate, you might want to look into resonated stacks or ensure your cab has some decent sound deadening. However, if you live for the sound of a turbo whistling through a 7-inch pipe, you probably won't mind one bit. It's a raw, mechanical experience that makes the truck feel more like a piece of heavy machinery than a commuter vehicle.
Installation Basics: What to Expect
Installing exhaust stacks for pickup trucks isn't the hardest DIY project, but it does require some "point of no return" decisions. The biggest one is cutting the hole in your bed. Once you take a hole saw to that metal, there's no going back without some serious bodywork.
Most kits come with a template. You'll need to go under the truck, disconnect your existing cat-back or turbo-back system, and route the new piping up through the bed. Most guys go with a single stack or a dual setup. * Single stacks are usually placed on the passenger side. It's a bit more "old school" and leaves more room in the bed. * Dual stacks give you that symmetrical, powerful look, but they require more plumbing and obviously twice the space.
You also need to make sure your mounting brackets are rock solid. You don't want those heavy pipes vibrating against the cab or rattling every time you hit a pothole. High-quality clamps and heavy-duty hangers are your best friends here.
Material Choice: Chrome vs. Black vs. Stainless
The finish you choose says a lot about your truck's vibe. Chrome is the traditional choice. It's flashy, it catches the sun, and it screams "show truck." But chrome requires maintenance. If you don't polish it, it'll start to look pitted and dull, especially if you live in a place where they salt the roads in the winter.
Black powder-coated stacks have become huge in the last decade. They give the truck a "blacked out" or "stealth" look (even though there's nothing stealthy about the sound). Powder coating is generally pretty durable, but cheap versions can flake off due to the high heat of the exhaust gases.
If you want the best of both worlds, polished stainless steel is usually the winner. It looks almost as good as chrome but is much more resistant to rust and heat discoloration. It's a bit more expensive upfront, but it'll likely last the life of the truck without much fuss.
The Rain Factor
One of the biggest "gotchas" with vertical stacks is water. When your truck is parked outside in a downpour, rain goes straight down those pipes. If you don't have a way for that water to drain, it sits in the bottom of your exhaust system. When you start the truck, you might get a face full of "soot rain"—a lovely black mixture of water and carbon that sprays all over your truck and anything nearby.
To avoid this, most people do one of two things: 1. Install rain caps: Those flappers that open when the exhaust pressure hits them. 2. Drill a small weep hole: A tiny hole at the lowest point of the T-pipe under the bed allows water to drip out before it builds up.
It's a small detail, but it's one you'll definitely regret overlooking the first time you start your truck after a storm and realize your white paint job is now covered in black spots.
Final Thoughts on Style and Function
At the end of the day, adding exhaust stacks for pickup trucks is about making the vehicle yours. It's a nod to the big rigs and a way to stand out in a sea of factory-standard pickups. It's not the most practical modification in the world—you lose bed space, it's louder, and you have to worry about rain—but for a lot of us, that's not the point.
The point is the way it feels when you're rowing through gears and you see that puff of smoke (responsibly, of course) heading skyward instead of lingering under the chassis. It's about the presence the truck has when it's idling at a light. If you're okay with a little extra maintenance and a noisier cab, a set of stacks might be the best upgrade you ever give your rig. Just make sure you measure twice before you start cutting that hole!