Borla
Borla Universal 2.5in Inlet/Outlet ProXS Muffler
SKU: B00F 40358
Description
Part #: 40358
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.
Muffler - ProXS - 2-1/2 in Center Inlet - 2-1/2 in Offset Outlet - 14 x 4 x 9-1/2 in Oval Body - 18 in Long - Stainless - Natural - Universal - Each
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Borla |
| Part Number | B00F 40358 |
Videos
New Mufflers - Borla Pro XS
2010 Toyota Matrix S w/ BORLA PRO-XS!
Borla Pro XS 2020 Chevy Silverado 5.3 | Too Quiet or Perfect?
Borla ProXS mufflers on a Genesis Sedan 3.8 AWD
Borla Pro XS 40359 Review
2014 Silverado 5.3 w/ Borla Proxs
Mustang GT Borla Pro-Xs vs Borla S-Type
Flowmaster 40 Series vs Borla Pro XS on SBC 350
Borla Pro XS on 2020 Toyota Tundra
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy