Freightliner FLC120 Chrome Stacks & Tops offer a wide range of stylish and durable exhaust stack options to complement your Freightliner truck. Whether you're looking for a classic flat top, a sleek miter cut, or a bold west coast turn design, this product lineup has something to suit every preference. These high-quality chrome stacks are built to last, with sturdy construction and a mirror-like finish that adds a touch of custom flair to your Freightliner. From short 30-inch stacks to towering 120-inch models, you'll find the perfect fit for your truck's unique look and needs. Upgrade your Freightliner's appearance and performance with the premium chrome stacks and tops in this comprehensive product lineup.
Frequently Asked Questions About Freightliner FLC120 Chrome Stacks & Tops
What exhaust stack sizes are compatible with the FLC120, and how do I measure for proper fitment?
The Freightliner FLC120 typically accommodates 5-inch and 6-inch diameter exhaust stacks. To ensure proper fitment, measure your existing exhaust pipe's outside diameter at the connection point. Most FLC120 models from 1989-2003 use standard 5-inch connections, though some heavy-spec models may have 6-inch systems. The stack length depends on your cab configuration - day cabs usually run 48-60 inches, while sleeper cabs often require 72-96 inch stacks to clear the sleeper roof.
Are these chrome stacks made from 304 or 409 stainless steel, and what's the difference in durability?
Most quality chrome stacks for the FLC120 are manufactured from either 304 or 409 stainless steel. The 304 stainless offers superior corrosion resistance and maintains its mirror finish longer, making it ideal for show trucks or drivers in coastal areas. The 409 stainless is more economical and still provides excellent durability for most applications, though it may develop a slight golden tint over time. Both materials are significantly more durable than chrome-plated mild steel alternatives.
Do I need special brackets or modifications to install these stacks on my FLC120?
Installation typically requires stack clamps and may need cab-mounted brackets depending on your setup. Most FLC120s have existing mounting points behind the cab, but you'll need heavy-duty stack clamps rated for your stack diameter. For stacks over 72 inches, we recommend using cab-mounted stabilizer brackets to prevent excessive movement. No cutting or welding is required for standard installations, though some drivers add additional support brackets for off-road applications.
What's the difference between straight cut, curved, and miter cut stack tops?
Straight cut tops provide the classic look and are the most economical option. Curved or turnout tops direct exhaust away from your trailer and reduce soot buildup on refrigerated units. Miter cut tops offer a distinctive angled appearance and can help direct exhaust at a specific angle. For FLC120s pulling reefer trailers, we typically recommend curved tops with a 30-45 degree turnout to keep exhaust away from the refrigeration unit.
How do these chrome stacks handle winter road salt and chemicals?
Quality stainless steel stacks handle road salt well with proper maintenance. Rinse your stacks with fresh water weekly during winter months to prevent salt buildup. Apply a chrome polish or stainless steel protectant monthly to maintain the finish. Avoid using harsh chemicals or steel wool for cleaning - use only chrome-safe cleaners and microfiber cloths. Stacks with welded seams rather than rolled construction offer better protection against moisture intrusion at the joints.
