Borla · New
Borla Universal Center/Offset Oval 2.5in Tubing 19in x 4in x 9.5in PRO-XS Notched Muffler
MPN 400484 · Store SKU bor400484
Supplier stock checked 11/7/2026, 12:21:17 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
ProXS Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 25" Overall Length. Notched necks for easy clamp-on installation using 1" wide band style clamps 18325 (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 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(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Value-priced BORLA® ProXS mufflers share many of the hottest features of our performanceline. Including high-quality 300 Series austenitic stainless steel construction, streetcommandingsound and our Million Mile Warranty. Sizes are available for import anddomestic cars and trucks. 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. ProXS Muffler - Notched Neck Borla® Pro XS Muffler
Manufacturer fitment & guides
Check 400484 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
