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Thermal R&D Exhaust

2020-2027 Ford Explorer ST - 3" Catback Exhaust w/ Polished Tips

2020-2027 Ford Explorer ST - 3" Catback Exhaust w/ Polished Tips

B917-C917

$1,699.99
$1,699.99
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Why Thermal R&D?

Drone Free
Lifetime Warranty
Top Quality Construction
4.8 ★ Customer Rated
Manufactured In The USA
Free Shipping To Lower 48 States

2020–2027 Ford Explorer ST 3" Front Pipe Back Exhaust System — Polished Stainless

Upgrade your Ford Explorer ST with a full 3" front pipe back exhaust system engineered for maximum flow, a deeper exhaust tone, and true everyday drivability — from the catalytic converters all the way to the tips.

Also fits 2020–2027 Ford Explorer Platinum models equipped with the 3.0L EcoBoost. The system uses the factory hanger locations and exits through the factory rear valance with no modifications required, making it a true direct bolt-on for both Explorer ST and 3.0L Platinum owners.

Unlike a traditional catback, this system runs 3" tubing from the front pipes back, giving the Explorer ST's turbocharged 3.0L EcoBoost engine a more aggressive sound profile and a more responsive driving experience with improved exhaust flow. Under acceleration, the tone is deep and throaty. At cruise, it stays refined and comfortable — exactly what True Helmholtz Technology is built to deliver.

At the core of the system is our True Helmholtz Technology, a proprietary resonance-tuning design that targets and smooths out the low-frequency exhaust frequencies that cause cabin fatigue on long drives. The result is a sound profile that feels intentional — commanding under throttle, relaxed when you're not pushing it.

Constructed from mandrel-bent T304 stainless steel throughout, this Explorer ST exhaust system is built for long-term durability and corrosion resistance. The tubing features a mill finish, the front muffler carries a matching mill finish, and the rear Helmholtz chambers are finished in brushed stainless for a premium look under the vehicle.

The system connects directly to the OEM catalytic converters and downpipes, mounts using factory hanger locations, and is designed to fit the OEM rear valance on both the Explorer ST and 3.0L Explorer Platinum with no cutting or welding required. Emissions are not affected — the front pipes install after the factory catalytic converters.

Finished in brilliant polished stainless, the dual 4" angle cut tips deliver a clean, classic look that stands out on any Explorer ST build. Also available in black coated and carbon fiber tip finishes.

  • Fits 2020–2027 Ford Explorer ST 3.0L EcoBoost
  • Also fits 2020–2027 Ford Explorer Platinum 3.0L EcoBoost models
  • Full 3" front pipe back system for maximum exhaust flow
  • Mandrel-bent T304 stainless steel construction throughout
  • True Helmholtz Technology for a refined, fatigue-free exhaust note
  • Deep, aggressive exhaust tone under throttle, refined at cruise
  • More responsive driving experience
  • Dual 4" angle cut tips in polished stainless
  • Also available in black coated and carbon fiber tip finishes
  • Connects after OEM catalytic converters — no emissions impact
  • Direct bolt-on using factory hanger locations, fits OEM valance
  • No cutting or welding required
  • Lifetime Manufacturer's Warranty

Contact us before ordering and we'll help you confirm compatibility.

Sound Clip & Install Videos:

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2020-2027 Ford Explorer ST - 3" Catback Exhaust w/ Polished Tips has a rating of 4.8 stars based on 25 reviews.

Overall rating: 4.8333335 / 5 from 24 reviews.

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Reviews

3 inch cat back system for my Ford explorer st

"Wouldnt recommend another brand the craftsmanship alone had me but the sound is where it gets ya, The colds start fill your heart with a warm hello while the pulls great you with a hell yeah and honestly I couldn't ever go with anither brand after buying thermal thanks again team"

— Tyler V. (5/5)

Super solid exhaust

"Was on the fence about going with Thermals 3” just because of how loud other people have said it is. I pulled the trigger anyways and I’m so happy I did. Perfect volume with minimal to no drone. Very happy with this purchase."

— Tyler D. (5/5)

Tremor

"Easy to install Added throttle response"

— Dave S. (5/5)

Thermal exhaust 3inch polished

"Love my 3 inch thermal exhaust. . It was Well packaged and no issues."

— Erlin L. (5/5)

2026 ford explorer st 3 inch cat back

"Easy installation perfect fit sounds great"

— Robert J. (5/5)

Many problems with the fit of the tips.

"Before making the purchase, I watched many videos and it seemed perfect, but in reality, after installing it and driving about 60 miles, the tips don't fit well, they move even after tightening them, the exhaust makes a lot of metallic noises, and there are leaks at the joints even though they are tightened."

— Vic. S. (2/5)

Looks great on my 2025 Explorer ST

"Instalation is easy and the hardware is high quality. Make sure you mark the ends of your pipes to confirm you have enough pipe being clamped. Run a few heat cycles then RECHECK HARDWARE AND TORQUE. I had a few issues with pipes slipping out of the clamps but after tighteningeverything to spec after a few heat cycles everythingis great with no leaks or rattles. I wish the system was slightly louder but I will add downpipes next. Tips look better than stock and there is no drone or annoying noises inside the cabin. This system isn't as loud as expected however I'm very pleased with my purchase and will be looking for a similar kit for my wife's 2019 grand cheroke 3. 6L"

— Christopher M. (5/5)

3in Explorer ST exhaust

"WOW easy install and the best sounding exhaust for the explorer st hands down."

— stephen s. (5/5)

Best in the game!!

"Hands down the best exhaust in the game for the ST! Zero drone with a deep tone!"

— Ivan H. (5/5)

2025 ST 3” Cat Back Exhaust

"Love it. I was worried the 3” was going to be too loud. It was just the right amount of growl, no drone. The kit was complete and fit excellent."

— Parker L. (5/5)

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