A suitable diesel exhaust stack kit depends on your exhaust inlet diameter, preferred material and finish, and whether you want tips included. The 5-inch FGJQEFG aluminized-steel kit is best for buyers seeking a dual-stack setup with a larger listed inlet; its 4-inch version is better for a smaller inlet. For stainless options, consider the black-finished FGJQEFG kit or the BIGREAT system with polished tips. Confirm measurements and vehicle fitment before ordering.
| Product | Best For | Key Listed Detail |
|---|---|---|
| FGJQEFG 5-inch aluminized steel | 5-inch inlet buyers | Silver coating; 2.0 mm thickness |
| FGJQEFG 4-inch aluminized steel | 4-inch inlet buyers | Silver coating; 2.0 mm thickness |
| BIGREAT 5-inch system | Buyers wanting polished tips | 60-inch tips; T409 stainless smoke kit |
| FGJQEFG 5-inch black stainless | Black-finish preferences | T409 stainless; 2.0 mm thickness |
| FGJQEFG 4-inch black system | 4-inch setups with included tips | 36-inch tips with 4-inch inlets |
FGJQEFG 5-Inch Aluminized Steel Kit

This dual-smoker T-pipe kit is best for buyers whose intended setup calls for a 5-inch inlet and who prefer a silver-coated aluminized-steel system. The listed tubing is mandrel bent, and the stated material thickness is 2.0 mm. The product is described as designed for Chevy, Dodge, and Ford full-size pickup trucks.
Why it stands out: It combines a clearly stated 5-inch inlet with dual-stack configuration and broad full-size-pickup compatibility claims. Check the existing exhaust dimensions and the specific vehicle layout before purchase; the listing does not establish fitment for every model or configuration.
FGJQEFG 4-Inch Aluminized Steel Kit

Choose this kit if your planned exhaust setup requires a 4-inch inlet rather than a 5-inch one. It has a silver-coated aluminized-steel construction, 2.0 mm stated thickness, and mandrel-bent tubing. The listing describes it as designed for Chevy, Dodge, and Ford full-size pickup trucks.
Best for: Buyers matching a 4-inch system who want a dual T-pipe kit in a silver finish. Its main distinction from the other FGJQEFG aluminized option is the inlet diameter. Avoid choosing based on truck make alone: confirm the exhaust diameter and installation configuration first.
BIGREAT 5-Inch Kit With Polished Tips

This system is best for buyers seeking a 5-inch inlet kit with long, polished exhaust stack tips. The listed smoke kit uses T409 stainless steel with a silver coating and 2.0 mm thickness. Its exhaust tips are stated to be 5 inches in outside diameter, 60 inches overall, and 1.6 mm thick, with a mirror-chrome-plated finish. The product also specifies computerized mandrel bends.
Why it was selected: The tip dimensions and finish are described in detail, helping buyers compare the visible stack components as well as the inlet. Vehicle compatibility is not specified in the provided details, so confirm fitment and available installation space before selecting it.
FGJQEFG 5-Inch Black Stainless Kit

For buyers who want a black finish and a 5-inch inlet, this FGJQEFG kit pairs a dual T-pipe layout with T409 stainless steel. The listing gives a 2.0 mm thickness and says the tubing is mandrel bent. It is described as designed for Chevy, Dodge, and Ford full-size pickup trucks.
Better for: A buyer who has verified a 5-inch inlet and prefers the listed black coating over a silver finish. The supplied information does not list stack-tip dimensions, so check what components are included and whether their dimensions meet your installation needs.
FGJQEFG 4-Inch Black Kit With Tips

This option is best for buyers who need a 4-inch inlet and want black-finished miter-cut tips included in the listed setup. The kit is described as T409 stainless steel with a black coating, 2.0 mm thickness, and mandrel-bent tubing. The two tips are listed with 4-inch inlets, 8-inch outlets, and a total length of 36 inches.
Why it stands out: Its tip inlet, outlet, length, and cut style are specified. Confirm that the larger 8-inch outlets and 36-inch tip length suit your intended installation. The provided details do not state vehicle-specific compatibility.
Buying Guide: How To Choose A Diesel Exhaust Stack Kit
Which inlet diameter should you choose?
Start by measuring the existing exhaust connection or checking the specifications for the intended installation. These products include 4-inch and 5-inch inlet options; those sizes are not interchangeable by assumption. Match the kit to the actual exhaust diameter and verify how the T-pipe connects to the rest of the system.
Does material and finish matter?
Compare the stated construction and coating rather than treating all kits as equivalent. The listed options include aluminized steel and T409 stainless steel, with silver or black finishes. BIGREAT also lists polished mirror-chrome-plated tips. Product descriptions provide material details, but do not establish how a finish will perform in every climate or use condition.
Are stack tips included, and will they fit?
Tip details vary. BIGREAT lists 5-inch-OD tips that are 60 inches long, while the FGJQEFG 4-inch black system lists 36-inch tips with 4-inch inlets and 8-inch outlets. Check whether tip dimensions, outlet size, and available space suit your truck and desired installation.
How should you confirm truck fitment?
Some listings say they are designed for Chevy, Dodge, and Ford full-size pickups, but that wording does not confirm fitment for every year, engine, cab, bed, or exhaust configuration. Verify vehicle details, connection dimensions, and installation requirements with the seller or a qualified installer before buying.
Frequently Asked Questions
What is a dual-smoker T-pipe kit?
It is an exhaust-stack system described with a T-pipe layout for a dual-stack arrangement. Confirm the kit’s included components and connection measurements in its listing.
Can I use a 4-inch kit in place of a 5-inch kit?
Not without confirming the dimensions and connection requirements. Choose the inlet size that matches the planned exhaust setup.
Which listed kit includes detailed tip dimensions?
The BIGREAT option lists 5-inch-OD, 60-inch-long tips. The FGJQEFG 4-inch black option lists 36-inch tips with 4-inch inlets and 8-inch outlets.
Are these kits confirmed to fit every full-size pickup?
No. Some listings name Chevy, Dodge, and Ford full-size pickups, but the supplied details do not confirm fitment for every truck configuration.