STILLEN Cat-Back Exhaust Systems - 2021-2026 Ford F-150 (Polished Tip, Black Tip or Off-Road Series)
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Warranty Information
Vendor warranty summary
Stillen Warranty
At a glance: Limited lifetime (max 7 years) on exhaust, intakes, sway bars and urethane; 5 years on TruControl; 1 year on brakes
This is Stillen's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: October 4, 2026.
Coverage by product
| Product or component | Coverage |
|---|---|
| Exhaust (stainless) | Limited lifetime while original buyer owns the vehicle (max 7 years) |
| Intakes | Limited lifetime while original buyer owns the vehicle (max 7 years) |
| Sway bars | Limited lifetime while original buyer owns the vehicle (max 7 years) |
| Urethane products | Limited lifetime while original buyer owns the vehicle (max 7 years) |
| TruControl power modules | 5 years |
| Brake pads and rotors (kit components) | 1 year |
- Original purchaser only — coverage does not transfer if you sell it.
- Keep your NVMOS order confirmation — proof of purchase is required.
What's covered
- Manufacturing defects and workmanship when properly installed on the listed vehicle
- Rust-through on stainless exhaust systems
- STILLEN chooses to repair or replace
What's not covered
- Improper installation, modification or misuse
- Racing or commercial use
- Accident or collision damage
- Cosmetic blemishes and finish wear
- Labor, installation, shipping, rental vehicles and consequential damages
- TruControl units that were tampered with or repaired by others
How to make a Stillen warranty claim
- Email STILLEN with photos of the problem
- Include your original invoice/receipt or order info and your contact details
- Keep the original box (and factory parts) for any return
Stillen contact: Phone: (866) 250-5542 · Email: sales@stillen.com · Claim page / support
Bought it from NVMOS? Start with us.
Have your order number and a few photos of the issue ready, then call real humans at (920) 249-7744 or send us a message. We'll tell you whether the claim goes through us or straight to Stillen, and help it along either way.
Shop Stillen at NVMOS
See all Stillen products, lead times and FAQs →
Disclaimer: The information on this page describes Stillen's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Source: Stillen official warranty information. Last updated on nvmos.com: October 4, 2026. See our return policy for NVMOS's own terms.
About the brand
STILLEN is a Costa Mesa, California performance company founded by IMSA GT champion Steve Millen. NVMOS carries the TruPower by STILLEN cold air intake (TP403202) for the 2014–2021 Toyota Tundra 5.7L, with a cleanable oiled filter. It's for Tundra owners who want a bolt-in intake upgrade.
Based in: Costa Mesa, California · Made in: USA · Founded: 1986
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Warranty terms are set by Stillen, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
STILLEN's cat-back exhaust for the 2021-2026 F-150 is built to give the truck a deeper, sportier note without the cabin drone that spoils highway miles. It is made in the USA from 409 stainless steel and comes with a limited lifetime warranty. It works with all of the covered engine options: 2.7L EcoBoost, 3.5L EcoBoost and 5.0L V8.
There are three versions. The polished stainless tip (509360) and the black coated tip (509361) are conventional cat-back systems. The Off-Road Series (509362) is designed for maximum clearance and an aggressive sound; it eliminates the rear section of the system to improve departure angles and reduce the risk of damage during hard off-road use.
Fitment
The polished and black tip systems fit SuperCab with a 6.5 ft bed, SuperCrew with a 5.5 ft bed, and Regular Cab with a 6.5 ft or 8 ft bed. The Off-Road Series fits all cab and bed configurations. These systems are not compatible with Raptor, Raptor R or PowerBoost models, so check your truck before ordering.
Questions before you order?
Fitment questions are easier to settle before the box ships. Call or text us at (920) 249-7744.
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STILLEN Cat-Back Exhaust Systems FAQs
Which F-150 engines does it work with?
The 2.7L EcoBoost, 3.5L EcoBoost and 5.0L V8. It is not compatible with Raptor, Raptor R or PowerBoost models.
What is the difference between the three versions?
509360 has a polished stainless tip and 509361 has a black coated tip. 509362 is the Off-Road Series, which eliminates the rear section for better departure angles and clearance.
Will it fit my cab and bed?
The polished and black tip systems fit SuperCab with a 6.5 ft bed, SuperCrew with a 5.5 ft bed, and Regular Cab with a 6.5 ft or 8 ft bed. The Off-Road Series fits every cab and bed configuration.
Will it drone on the highway?
STILLEN describes the sound as sporty and deep with zero drone.
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