STILLEN Cat-Back Exhaust - 2022-2026 Toyota Tundra 3.4L Twin Turbo V6
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
Shop all 150 StillenWarrantyAll brands
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.
This STILLEN cat-back is built for the 3.4L twin-turbo V6 in the third-generation Tundra. It runs dual 2.5-inch tubing into a single performance muffler, which gives the truck a deeper note without the harsh rasp or highway drone that louder systems tend to bring. STILLEN reports dyno-verified gains of up to 10 wheel horsepower and 12 lb-ft of wheel torque, and the layout is tuned to keep exhaust velocity up across the usable rev range instead of chasing a peak number.
The tubing is mandrel-bent 304 stainless with CNC-machined flanges, so the fit is clean and the material shrugs off corrosion. It is made in Costa Mesa, California, and carries a limited lifetime warranty. STILLEN also notes that some customers have reported better fuel economy, though STILLEN has not verified that claim, so treat it as a possible bonus rather than a promise.
Fitment
Fits 2022-2026 Toyota Tundra with the 3.4L twin-turbo V6, hybrid and non-hybrid, with 5.5 ft or 6.5 ft beds and the factory bed step. It will not fit the Long Bed CrewMax Cab. Choose the polished stainless tip (509355) or the black tip (509356).
Install notes
This is a true bolt-on install with no cutting or welding. STILLEN says the routing can be shortened at the axle to improve departure angle, which is a useful detail if the truck sees rocks or steep breakovers.
Questions before you order?
Fitment questions are easier to settle before the box ships. Call or text Carl & Anton at (920) 249-7744 or use the chat — real humans in Sheboygan, Wisconsin, not a call center.
Complete your Toyota Tundra build
More parts that fit your Toyota Tundra and pair well with this one — matched and ready to install.
$1,029.99
$69.99
$79.95
$129.95
$299.95
More for your Toyota Tundra
Picked from the 1229 parts we carry for the Toyota Tundra, matched to 2022–2026 model years. Check the years and trim in each title — or call us and we’ll confirm fit.
Specifications
STILLEN Cat-Back Exhaust FAQs
Which Tundras does this fit?
2022-2026 Toyota Tundra with the 3.4L twin-turbo V6, hybrid or non-hybrid, with 5.5 ft or 6.5 ft beds and the factory bed step. It does not fit the Long Bed CrewMax Cab.
Do I need to cut or weld anything?
No. STILLEN describes it as a true bolt-on install with no cutting or welding.
What is the difference between 509355 and 509356?
Only the tip finish. 509355 has a polished stainless tip and 509356 has a black tip.
How much power does it add?
STILLEN reports dyno-verified gains of up to 10 wheel horsepower and 12 lb-ft of wheel torque.
Is there a warranty?
Yes. STILLEN lists a limited lifetime warranty.
Multi-column
Join Our Community
For all things NVMOS, check us out on Instagram and Facebook!
Financing Available
Buy now, pay later with PayPal Credit — available at checkout.
Contact Us
Have a question? Just send us an e-mail at support@nvmos.com
