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Description
Borla 400487 - 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/ 2.5" 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/ 2.5" 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
4.5 ★★★★★
Based on 507 reviews
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Product Reviews
★★★★★ 5
Good quality
Size: 46, Color: 01khaki Camo
These pants are good quality with a plenty of pockets. Size is accurate. Would recommend.
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Reviewed in the United States on March 2, 2026
★★★★★ 3
Men's Cargo Shorts
Size: 42, Color: 01khaki
Not true color. Ordered Kahki color shorts, instead got ugly yellow/orange color shorts. Fit ok will see how they wash. Still considering returning.
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Reviewed in the United States on June 23, 2024
★★★★★ 5
Good Value
Size: 34, Color: 01black Camo
I wasn't expecting much at this price, but was pleasantly surprised. Great quality and perfect fit. The pockets are well stitched and they look great.
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Reviewed in the United States on July 5, 2025
★★★★★ 1
Comfy shorts with plenty of leg room.
Size: 46, Color: 01khaki
These shorts run huge, in the legs. Nice material, well made, waist was the right size, but too much in the legs.
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Reviewed in the United States on June 19, 2025
★★★★★ 5
Great watch. Would buy again if I live that long.
Color: Tan
Excellent product. Simple, reliable, accurate and easy to read day or night. Don't think about it too much. Just pull the trigger.
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Reviewed in the United States on December 27, 2025