— // SUPPORT
Fitment, shipping, returns, and tuning — the answers to what diesel truck owners ask us most. Still stuck? A Tuned Rep is a call away.
Use our vehicle fitment finder to enter your year, make, model, and engine, or go straight to your platform page — like 6.7L Powerstroke or L5P Duramax — to see only the parts confirmed to fit. Every product page also lists the exact year range, cab, and bed configurations it covers.
If a part matched through our fitment tools doesn't fit as described, we make it right — we'll exchange it for the correct part and cover return shipping, even on final-sale items. See our Fitment Guarantee for details.
Absolutely. Call a Tuned Rep at 888-322-4233 before you order and we'll spec the right parts for your exact build.
Yes. Every order ships free across the US and Canada — no calculated freight, oversize surcharges, or brokerage fees at checkout. See Shipping & Freight for full details.
In-stock orders are dispatched within 2–3 business days. You'll get a tracking number by email when it leaves the warehouse — allow up to 48 hours for tracking to go live.
In most cases, no. Our steel exhaust is American-made and generally qualifies for duty-free treatment under the USMCA trade agreement. We prepare the customs paperwork to support that origin. Full details on our Shipping & Freight page.
Use the tracking number in your shipping email, or check status any time on our order tracking page.
Exhaust systems, race pipes, EGR kits, and tune files are final sale — standard across the diesel industry, which is why we built accurate fitment tools. Damaged, defective, or wrong items are always made right. See Returns & Warranty.
Email or call us within 48 hours of delivery with your order number and photos of the item and packaging. We'll arrange a replacement at no cost to you.
Yes — defective devices are covered by a 90-day manufacturer warranty. Custom tuning is otherwise final sale since licenses lock to your VIN. See Returns & Warranty.
It depends on your platform, goals, and supporting mods. Browse our tuners or call 888-322-4233 and we'll match you to the right one. Prefer it done for you? A Full Send Kit comes matched out of the box.
It varies by setup. Some parts are standalone; others perform best paired with tuning. Check the product page or ask us — see Tune Support for help.
// STILL HAVE QUESTIONS?
Can't find your answer here? Call a Tuned Rep at 888-322-4233 or send us a message — we're happy to help you get it right.