null

Kenworth W990 Chrome Stacks & Tops

Customize your Kenworth W990 with aftermarket chrome stacks and chrome tops. Browse our selection of west coast turnout stacks, miter top stacks, flat top stacks, bull hauler top stacks and curve top stacks.
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 4 OD X 24 Inch Chrome-Plated Steel Flat Top Stack by BESTfit

    4 OD X 24 Inch Chrome-Plated Steel Flat Top Stack by BESTfit

    BESTFIT TRUCK PARTS

    $136.99
    BESTfit 4 Inch O.D. Inlet X 24 Inch Chrome-Plated Steel Flat Top StackMake your truck stand out with the BESTfit 4 Inch O.D. Inlet X 24 Inch Chrome-Plated Steel Flat Top Stack. Made from high-quality...
    09-080100251
    SKU:
    09-080100251
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Length Options:
    24 Inch
    Style Options:
    Flat Top
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $136.99
    Qty in Cart: 0
    Price:
    $136.99
    Subtotal:
  • 5 ID X 72 Inch Chrome-Plated Steel Miter Cut Stack by BESTfit

    5 ID X 72 Inch Chrome-Plated Steel Miter Cut Stack by BESTfit

    BESTFIT TRUCK PARTS

    $452.99
    BESTfit 5 Inch ID Inlet X 72 Inch Chrome-Plated Steel Miter Cut StackElevate your truck's exhaust system with the BESTfit 5 Inch ID Inlet X 72 Inch Chrome-Plated Steel Miter Cut Stack. Constructed...
    09-080100246
    SKU:
    09-080100246
    Truck Class:
    Universal
    Diameter Options:
    5 Inch
    Length Options:
    72 Inch
    Style Options:
    Miter Cut
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Product Type:
    Exhaust
    $452.99
    Qty in Cart: 0
    Price:
    $452.99
    Subtotal:
  • 4 OD X 72 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    4 OD X 72 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    BESTFIT TRUCK PARTS

    $319.99
    BESTfit 4 Inch O.D. Inlet X 72 Inch Chrome-Plated Steel Curved Top StackMake your truck's exhaust system a work of art with the BESTfit 4 Inch O.D. Inlet X 72 Inch Chrome-Plated Steel Curved Top...
    09-080100236
    SKU:
    09-080100236
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Length Options:
    72 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    $319.99
    Qty in Cart: 0
    Price:
    $319.99
    Subtotal:
  • 4 ID X 72 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    4 ID X 72 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    BESTFIT TRUCK PARTS

    $354.99
    BESTfit 4 Inch ID Inlet X 72 Inch Chrome-Plated Steel Curved Top StackUpgrade your exhaust system with the BESTfit 4 Inch ID Inlet X 72 Inch Chrome-Plated Steel Curved Top Stack ? perfect for those...
    09-080100235
    SKU:
    09-080100235
    Truck Class:
    Universal
    Diameter Options:
    4 Inch
    Length Options:
    72 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    $354.99
    Qty in Cart: 0
    Price:
    $354.99
    Subtotal:
  • 4 ID X 60 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    4 ID X 60 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    BESTFIT TRUCK PARTS

    $310.99
    BESTfit 4 Inch ID Inlet X 60 Inch Chrome-Plated Steel Curved Top StackTransform your vehicle's exhaust system with the BESTfit 4 Inch ID Inlet X 60 Inch Chrome-Plated Steel Curved Top Stack, a...
    09-080100234
    SKU:
    09-080100234
    Diameter Options:
    4 Inch
    Truck Class:
    Universal
    Length Options:
    60 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    $310.99
    Qty in Cart: 0
    Price:
    $310.99
    Subtotal:
  • 3.5 OD X 36 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    3.5 OD X 36 Inch Chrome-Plated Steel Curved Top Stack By BESTfit

    BESTFIT TRUCK PARTS

    $194.99
    BESTfit 3.5 Inch O.D. Inlet X 36 Inch Chrome-Plated Steel Curved Top Stack* High Quality Stack* Chrome-Plated Steel * Dimensions  - 3.5 Inch Diameter  - 36 Inch Length   - Curved Top* Hardware Not...
    09-080100225
    SKU:
    09-080100225
    Diameter Options:
    3 1/2 Inch
    Truck Class:
    Universal
    Length Options:
    36 Inch
    Material Options:
    Steel
    Make:
    Universal Items
    Finish Options:
    Chrome-Plated
    Style Options:
    Curve Turn
    Product Type:
    Exhaust
    $194.99
    Qty in Cart: 0
    Price:
    $194.99
    Subtotal:
  • Total: items /

Adding your products to cart

Kenworth W990 Chrome Stacks & Tops The Kenworth W990 is known for its commanding presence on the road, and this product lineup of chrome stacks and tops elevates that bold look even further. These premium exhaust components are designed to provide both style and function, offering a variety of options to customize the appearance and performance of your W990. Whether you prefer the classic look of a miter-cut stack or the sleek curves of a turnout top, you'll find a wide selection to choose from. Many of the stacks and tops feature chrome plating for a gleaming finish that catches the eye, while others offer a more subdued matte black or brushed steel aesthetic. No matter your preference, these parts are built to withstand the rigors of heavy-duty use and deliver long-lasting durability. Beyond just aesthetics, these chrome stacks and tops also contribute to enhanced airflow and engine efficiency. The carefully engineered designs help optimize exhaust flow, reducing backpressure and improving overall performance. So not only will your W990 look amazing, but it will also run at its best. Upgrade the style and function of your Kenworth W990 with these premium chrome stacks and tops, available in a variety of sizes, styles, and configurations to suit your specific needs and preferences. Elevate your rig's presence on the road while enjoying the benefits of improved airflow and efficiency.

Frequently Asked Questions About Kenworth W990 Chrome Stacks & Tops

What exactly are chrome stacks and tops?

Chrome stacks refer to the exhaust stack pipes that run vertically behind the cab of your Kenworth W990, while tops (also called stack tops or rain caps) are the caps or covers that fit on top of the stack to keep moisture and debris out. This category includes both the chrome-plated exhaust pipe sections and the various top styles used to finish off the stack.

Will these stacks and tops fit my specific W990 setup?

Fitment depends on the diameter and length of your existing exhaust system, as well as whether your truck uses a single or dual stack configuration. Always check the listed diameter (commonly 5 inch or 7 inch) and overall length against your current setup before ordering, and reach out to our team if you are unsure which size your truck requires.

What are stack tops made of, and which style should I choose?

Most tops are constructed from stainless steel or chrome-plated steel for durability and long-term shine. Style options typically include straight cut, curved, angle cut, and turnout tops, which are largely a matter of appearance rather than function, though some drivers prefer certain styles to help direct exhaust and rain runoff away from the cab.

How do I keep chrome stacks looking new and prevent rust or discoloration?

Regular washing with a mild soap and water solution, along with a dedicated chrome polish, will help maintain the finish. Heat discoloration near the top of the stack is common due to exhaust temperatures, so using a heat-resistant chrome cleaner and avoiding abrasive pads will help preserve the plating over time.

Do I need any special tools or professional help to install a new stack or top?

Basic hand tools such as clamps, wrenches, and sometimes a drill are typically all that is needed for installation, and many drivers install these themselves. However, if your setup involves cutting, welding, or modifying existing exhaust piping, it is a good idea to have a qualified shop handle the installation to ensure a proper, secure fit.


Introducing the Official 4 State Trucks Mobile App – Gear Up On the Go!