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The Same Proven Platform, Finished In Polished Stainless
The A/B/C-910 brings Thermal R&D's 2.5 inch downpipe back exhaust design to the Explorer ST with polished stainless tips instead of black coating. It replaces the factory catalytic converter outlets forward through the mid pipes, addressing the flex pipe failures Explorer ST owners commonly report while adding a cleaner, more aggressive tone.
Key Features
- The A/B/C-910 uses a 2.5 inch T304 stainless steel downpipe back design with mid pipes included
- Replaces the factory flex pipes and mid pipes prone to premature failure
- True Helmholtz Technology cancels drone at highway speed
- Mill finish tubing and center muffler with a brush finish rear muffler
- 4 inch dual polished angle cut tips
- The A/B/C-910 bolts to OEM catalytic converters using factory hangers, tips fit the OEM valance
Fitment Table
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2020-2026 | Ford | Explorer | ST |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | A/B/C-910 |
| Pipe Diameter | 2.5 inch |
| Material | T304 Stainless Steel |
| Tip Style | 4 inch dual angle cut, polished |
| System Type | Downpipe back with mid pipes |
| Drone Control | True Helmholtz Technology |
| Warranty | Lifetime |
| Country of Origin | Manufactured in the USA |
What's Included
- Front pipes and replacement mid pipe assembly
- Center muffler section with mill finish tubing
- Rear muffler section with polished tips
- Factory style hangers and clamps for a bolt on install
About Thermal R&D
Thermal R&D builds every system around measured frequency data rather than guesswork, and the A/B/C-910 downpipe back platform was engineered to solve two problems at once: a known factory mid pipe failure point and a desire for more aggressive sound without cabin drone. The polished tip version delivers the same engineering in a brighter, show ready finish.
Related Parts on Our Site
- Thermal R&D 2020+ Explorer ST 2.5 inch Downpipe Back Exhaust, Black Tips
- Thermal R&D 2014-2019 Ford Fiesta ST Catback Exhaust
FAQ
What is the A/B/C-910?The A/B/C-910 is Thermal R&D's 2.5 inch downpipe back exhaust system for the 2020-2026 Ford Explorer ST, including new mid pipes and finished with polished stainless tips.
How is this different from the black tip version?The underlying pipe, mid pipe, and muffler design are identical. This configuration simply uses polished stainless tips instead of the black coated tips offered on the other listing.
Does this replace the factory mid pipes?Yes, this downpipe back kit replaces the factory mid pipes and flex pipes in addition to the catback section.
Will this fit the base, XLT, Limited, or Platinum Explorer?No. The A/B/C-910 is an ST only system built around the 3.0L EcoBoost V6 and does not fit other Explorer trims.
Do the polished tips require extra maintenance?Polished stainless can develop light heat tint with hard driving, but it wipes clean with a standard stainless steel polish.
Is a tune needed after installation?No tune is required. This exhaust does not alter fueling and connects behind the OEM catalytic converters.
What is covered under the warranty?Thermal R&D backs this system with a lifetime warranty against manufacturing defects in materials and welds.
How long does installation typically take?Most shops complete the install in three to four hours with the vehicle on a lift, since the mid pipe section requires more access than a catback only exhaust.
Install Instructions
- Raise the vehicle and support it securely, then let the factory exhaust cool completely.
- Remove the factory exhaust starting at the catalytic converter outlets and working back.
- Detach the factory mid pipes and flex pipes, then remove the assembly from the vehicle.
- Install the new front pipes to the OEM catalytic converter outlets using the supplied clamps.
- Secure the new mid pipe and center muffler section to the front pipes.
- Attach the rear muffler section with polished tips and seat it on the factory hangers.
- Align the tips evenly at the rear valance, then torque all clamps to spec and check for leaks.
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