Stock exhausts on the 2.7L and 3.5L EcoBoost F-150 leave real sound and flow potential on the table, muffled by conservative OEM tuning built for the widest possible audience. Thermal R&D's 3-inch catback exhaust for the 2021-2025 Regular Cab Long Bed F-150 changes that equation with mandrel-bent T304 stainless steel construction, a drone-free interior, and a deep aggressive note that wakes up every time you press the throttle.
True Helmholtz Technology eliminates cabin drone. Thermal R&D engineers targeted the specific low-frequency resonance that makes highway cruising miserable in most aftermarket exhausts. The True Helmholtz design cancels those tones at the source, keeping the cabin comfortable on long hauls while still delivering a pronounced, aggressive exhaust note under hard acceleration.
3-inch mandrel-bent T304 stainless steel tubing. Mandrel bending preserves the full 3-inch diameter through every curve, so exhaust gases move without restriction. T304 stainless steel resists corrosion and heat fatigue across years of use, and the system backs that up with a lifetime warranty.
Bolt-on installation at factory mounting locations. No cutting, no welding, and no modifications to existing hardware. The system uses the OEM mounting points directly, making it a straightforward install without a lift or specialized tools.
Polished or coated tip options. Both finishes are available to match your truck's look, whether you want a bright mirror finish or a more subdued coated appearance.
Product Benefits
- True Helmholtz Technology: Cancels low-frequency drone tones for a comfortable cabin on long drives.
- Aggressive Exhaust Note: Delivers a deep, performance tone under acceleration without interior resonance.
- 3-Inch Mandrel-Bent Tubing: Maintains full diameter through bends for unrestricted exhaust flow.
- T304 Stainless Steel Construction: Corrosion and heat resistant for long-term durability.
- Bolt-On Fitment: Uses factory mounting locations with no modifications required.
- Lifetime Warranty: Covered for the life of the product.
- Made in the USA: Designed and manufactured domestically.
- Tip Options: Available with polished or coated tips to suit your preference.
About Thermal R&D: Thermal R&D designs and manufactures exhaust systems in the USA, with a focus on platform-specific fitment and engineering details that address real-world drivability. Their True Helmholtz Technology sets their systems apart by solving the drone problem that plagues most aftermarket exhaust upgrades.
Note: Fits 2021-2025 2.7L/3.5L EcoBoost Regular Cab 8ft bed F-150 only. Does not fit vehicles with Gas Particulate Filters (GPF). Verify fitment by checking your under-hood emissions sticker before ordering.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
- Vehicle Fitment:
- 2021, 2022, 2023, 2024, 2025
