BORLA 40659 ProXS Universal Muffler 2.5" Center Inlet/ 2.5" Center Outlet 425" x 7.88"
- 2.5 inch center inlet and center outlet
- 19 inches overall length, 14 inch long body
- 7.88 inch oval body, reversible design
- T-304 stainless steel, straight-through
- 8.1 pounds item weight
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A stainless, straight-through muffler for a custom exhaust run with matching center pipes. Check the pipe size and body length against your car, since the listing names no vehicle.
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ASIN: B000CIIAMAModel: 40659Category: Mufflers
Overview
Under a car with a center-in, center-out exhaust run, this Borla muffler replaces the existing can with an oval stainless body. The straight-through layout and reversible design let it be turned end for end during fitting.
Borla builds this ProXS muffler from stainless steel for long life under hard use, and the reversible body gives some freedom in how it is turned during fitting. The spec table says vehicle specific fit while the title says universal, so the buyer has to settle that question first.
Who it's for
An enthusiast or exhaust shop building a run with matching pipes can weld or clamp this body into place. Drivers who need a direct bolt-in part for one named model should look for a vehicle listed fit instead.
Pros and cons
- Stainless steel construction
- Straight-through flow path
- Center inlet and center outlet
- Fit type conflicts between title and spec table
- No vehicle list given
- Hangers and clamps not listed
- Warranty terms left as manufacturer warranty
Performance notes
A straight-through core lets exhaust gas pass with little restriction, and the oval body sets how much room it needs under the floor. Tone and volume are not described in the listing beyond the brand sound reference, so they are not predicted here.
Specifications
| Model | 40659 |
|---|---|
| Dimensions & fit | |
| Inlet size | 2.5 inches |
| Body length | 14 inches |
| Item dimensions | 19 inches |
| Weight | 8.1 pounds |
| Construction & materials | |
| Material | Stainless Steel |
| Warranty & support | |
| Warranty | Manufacturer warranty |
| Other details | |
| Configuration | Center/Center |
| Fit type | Vehicle Specific Fit |
| Shape | Straight-through, oval body |
Frequently asked questions
Is the Borla 40659 muffler vehicle specific?
The title calls it a universal part with a reversible design, while the spec table lists a vehicle specific fit. No vehicle is named, so confirm pipe size and length before buying.
What is included with the Borla 40659?
The included component is the muffler alone. No clamps, hangers or gaskets are listed.
Can the Borla 40659 be turned around?
The title describes a reversible design, so the body can be installed end for end. The listing gives no direction marking or flow note.