Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Borla 400484 - ProXS? Muffler Notched NeckNotched necks for easy clamp on installation. Reversible design for installation flexibility. High quality T 304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High temperature continuous filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by Borla's
Notched necks for easy clamp-on installation. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by Borla's Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Specifications:
| Description_ASM | ProXS? Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design. Notched Necks. |
| Description_DEF | Exhaust Muffler |
| Description_DES | ProXS? Muffler - Notched Neck |
| Description_EXT | ProXS? Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Universal Part. Reversible Design. NOTched Necks. |
| Description_INV | BorlaProXS Muffler |
| Description_MKT | Notched necks for easy clamp-on installation. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Best of all, it's made in the USA and backed by Borla's Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. |
| Description_SHO | ProXS? Muffler |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 287 reviews
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Product Reviews
★★★★★ 5
Good filter
Pretty thick. May restrict airflow a little bit but it's a good filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 2, 2024
★★★★★ 5
Fits like a glove
Filter my air
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
★★★★★ 5
Noticeable scent difference compared to factory standard
Smells clean for months. We are mainly gravel roads and these cabin filters do a great job
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
★★★★★ 5
It fits perfectly.
Great replacement and a very good price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
★★★★★ 5
Nice and a good price.
Fit our F250 Diesel well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
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