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Description
Borla 400486 - ProXS? Muffler Notched NeckSingle inlet and dual outlet. Notched necks for easy clamp on installation. Reversible design for installation flexibility. This muffler is generally used in a system that has a single inlet and dual outlets, but it can also be installed in a system with dual inlets and a single outlet. High quality T 304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High temperature
Single inlet and dual outlet. Notched necks for easy clamp-on installation. Reversible design for installation flexibility. This muffler is generally used in a system that has a single inlet and dual outlets, but it can also be installed in a system with dual inlets and a single outlet. 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 3" Center Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length. Universal Part. Reversible Design. Notched Necks. |
| Description_DEF | Exhaust Muffler |
| Description_DES | ProXS? Muffler - Notched Neck |
| Description_EXT | ProXS? Muffler 3" Center Inlet/ 2.25" Dual Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length. Universal Part. Reversible Design. NOTched Necks. |
| Description_INV | BorlaProXS Muffler |
| Description_MKT | Single inlet and dual outlet. Notched necks for easy clamp-on installation. Reversible design for installation flexibility. This muffler is generally used in a system that has a single inlet and dual outlets, but it can also be installed in a system with dual inlets and a single outlet. 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
4.4 ★★★★★
Based on 1521 reviews
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Product Reviews
★★★★★ 5
Love these socks
Size: Large, Color: (035) Steel / White / Black
Great quality socks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 4
Good quality
Size: Large, Color: (035) Steel / White / Black
These are a bit thicker then a compression sock and they come up higher on the ankle than a no-show sock normally does. They are very comfortable and soft.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
Good quality socks
Size: X-Large, Color: (001) Black / Black / White
Great value and great product and comfort. Not thin and wears well not like thin socks in a size that fits
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Socks
Size: Medium, Color: (001) Black / Black / White
Great price, perfect fit.
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Reviewed in the United States on January 23, 2026
★★★★★ 5
The best athletic socks you can buy!
Size: X-Large, Color: White/Graphite (6-pairs)
These are the very best athletic socks you can buy period. I have had several pairs that are over 10 years old and still in wearable condition. We are talking several hundred washes. They are super comfortable and no show. I can't overstate how great these socks are.
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Reviewed in the United States on February 12, 2024