Borla ProXS Muffler, 2.5" Dual In / 2.25" Dual Out, 4x9.5" Oval x 19", Notched
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Warranty Information
Vendor warranty summary
Borla Warranty
At a glance: One million miles on Borla exhaust systems, mufflers and headers for the original buyer and vehicle; one year on black coatings, tip finishes, carbon fiber and valves.
This is Borla's warranty, not an NVMOS policy. We've summarized it in plain English to save you a search. The manufacturer's official terms always govern and can change without notice. Last reviewed on nvmos.com: November 4, 2026.
Coverage by product line
| Borla product | Coverage |
|---|---|
| Exhaust systems, mufflers and headers sold in the USA | 1,000,000 miles, original purchaser and original vehicle |
| Million-mile products sold in Canada | 1.6 million kilometers |
| Black coatings, tip finishes and carbon fiber | 1 year |
| Moving parts such as valves and actuators | 1 year |
| Products sold outside the USA and Canada | 3-year limited |
| XR-1 Raceline and Marine products | Not covered |
What's covered
- Defects in materials and workmanship for the original purchaser of record
- The product while it stays on the original vehicle
- Repair or replacement at Borla's option, once Borla's examination finds a manufacturing or material defect
What's not covered
- Removal and reinstallation costs
- Sound level complaints
- Accident, abuse, misuse or misapplication
- Racing products, and street products used for racing
- Modifications to the product or its intended use
- Welding to the shell or end caps of a universal muffler
- XR-1 Raceline and Marine products
- Second owners and second vehicles
How to make a Borla warranty claim
- Call the company you bought the product from first.
- Return the product with a copy of the warranty, your name, address and phone number, a description of the problem and proof of purchase such as a copy of the invoice.
- Ship it freight prepaid.
- Borla examines the part and repairs or replaces it if it finds a manufacturing or material defect.
Borla contact: Borla customer service: toll-free 877-462-6752, Monday-Friday 7:30am-4:00pm Pacific. Website: https://www.borla.com · Warranty page
Bought it from NVMOS? Start with us.
Borla's first stop for a claim is the seller, and it wants proof of purchase with the returned part, which is your NVMOS order. Contact us first and we will look at the problem with you, coordinate the return with Borla and keep track of the repair or replacement. Have your order number and a few photos of the issue ready, then call or text us at (920) 249-7744 or send us a message.
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See all Borla products, lead times and FAQs →
Disclaimer: The information on this page describes Borla's own warranty policy. It is not a warranty offered by NVMOS (No Visible Means of Support LLC). Manufacturers update their terms at any time; we review these pages periodically, but the manufacturer's current official policy is the one that applies to your claim. Sources: Borla Million Mile Warranty (official page) and Borla Million Mile Warranty, current version with one-year finish terms (Borla document hosted by retailer Phastek Performance) and Borla Million Mile Warranty, earlier version (Borla document hosted on SEMA Data) and Borla LLM reference page (official). Last updated on nvmos.com: November 4, 2026. See our return policy for NVMOS's own terms.
About the brand
Borla has built stainless steel exhaust since 1978 and makes its systems in the USA at its plant in Johnson City, Tennessee. At NVMOS we carry Borla cat-back and axle-back systems, mufflers, tips and connecting pipes for the Toyota, Ford, Chevy, GMC, Ram, Nissan and Jeep trucks and SUVs we support.
Based in: Johnson City, Tennessee (Borla also lists a corporate office in Oxnard, California) · Made in: USA (Borla's manufacturing complex in Johnson City, Tennessee) · Lead time: In-stock parts ship in 1-3 business days; parts stocked at the manufacturer take about 1-2 weeks.
Shop all 508 BorlaWarrantyAll brands
Warranty terms are set by Borla, not NVMOS, and can change. Bought from us? Call (920) 249-7744 and we'll handle the claim with the brand.
Borla ProXS Muffler, 2.5" Dual In / 2.25" Dual Out, 4x9.5" Oval x 19", Notched
This Borla ProXS muffler is a universal unit with dual 2.5 in. inlets and dual 2.25 in. outlets, a 4 x 9.5 in. oval case and a 19 in. body (24 in. overall). ProXS is Borla's straight-ahead universal line, built from 300 Series austenitic stainless steel. It suits custom and replacement exhaust work where you need this exact inlet and outlet layout.
| Spec | Detail |
|---|---|
| Fitment | Universal |
| Inlet | Dual 2.5 in. |
| Outlet | Dual 2.25 in. |
| Case | 4 x 9.5 in. oval |
| Body length | 19 in. |
| Overall length | 24 in. |
| Necks | Notched |
| Material | 300 Series austenitic stainless steel |
| Weight | 12.6 lb |
This is a universal muffler, so measure your pipe size and the space under the vehicle before ordering. The notched necks clamp on with band clamps. Not sure it fits your build? Call or text us at (920) 249-7744 with your year, trim and setup and we will confirm it.
What pipe size does it fit?
It has dual 2.5 in. inlets and dual 2.25 in. outlets.
Do I need to weld it in?
No. The necks are notched for clamp-on installation with band clamps.
Is it for single or dual exhaust?
Dual. It has two inlets and two outlets with an X-pipe inside the case.
What is the warranty?
See our Borla warranty page for the current terms.
Specifications
Borla ProXS Muffler, 2.5" Dual In / 2.25" Dual Out, 4x9.5" Oval x 19", Notched FAQs
What pipe size does it fit?
It has dual 2.5 in. inlets and dual 2.25 in. outlets.
Do I need to weld it in?
No. The necks are notched for clamp-on installation with band clamps.
Is it for single or dual exhaust?
Dual. It has two inlets and two outlets with an X-pipe inside the case.
What is the warranty?
See our Borla warranty page for the current terms.
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