Borla 2.5in Inlet/Outlet Center/Offset Oval ProXS Muffler

SKU: BOR40659

Mufflers

BOR Pro-XS Mufflers...

Borla

Borla 2.5in Inlet/Outlet Center/Offset Oval ProXS Muffler

SKU: BOR40659

Mufflers

BOR Pro-XS Mufflers...

IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

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Description

Value-priced BORLAÂ® 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.

Product Overview

Compact size is perfect for applications with limited space. 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.

Product Details

Body Height (in.):	4.25
Body Height:	4.250 in.
Body Length (in.):	14
Body Length:	14.000 in.
Body Width (in.):	7.88
Body Width:	7.880 in.
Construction:	All Welded
Description:	BorlaÃ‚Â® Pro XS Muffler
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Outside Diameter:	2.500 in.
Inlet Position:	Center
Inlet Size (in.):	2.5
Inlet Type:	Single Center
Main Piping Diameter:	2.250 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	2.500 in.
Outlet Position:	Offset
Outlet Size (in.):	2.5
Outlet Type:	Single Offset Outlet
Overall Length (in.):	19
Overall Length:	19.000 in.
Part Number:	bor40659
Position:	N/A
Prop 65 (C, R or CR):	CR
Prop 65 - Long Label:	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Oval
Tip / Outlet Finish:	N/A
Title Extended:	ProXS Muffler 2.5in Offset/Center 14inx4.25inx7.88in Part # 40659
Title:	ProXS Muffler 2.5in Offset Inlet/ 2.5in Center Outlet 4.25in x 7.88in Oval x 14in Long Body

Application Summary

ProXS? Muffler 2.5" Offset Inlet/ 2.5" Center Outlet, 4.25" x 7.88" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-13 15:53:06

Features

2.5" Offset Inlet / 2.5" Center Outlet, 4.25" x 7.88" Oval, 14" Long Body, 19" Overall Length
Alternate muffler with Notched necks is 400481. Use 1" wide band clamps 18325.
Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18004.
Universal muffler. Reversible design.

Specifications

Product Attributes - Brand: Borla
Product Attributes - Manufacturer's Part Number: 40659
Product Attributes - Part Type: Mufflers
Product Attributes - Product Line: Borla ProXS Mufflers
Product Attributes - UPC: 808422406598
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.50 in.
Product Attributes - Outlet Diameter (in.): 2.50 in.
Product Attributes - Inlet Quantity: 1
Product Attributes - Outlet Quantity: 1
Product Attributes - Electronic Valve: No
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Inlet Location: Offset
Product Attributes - Outlet Location: Center
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: Yes
Product Attributes - Muffler Color: Natural
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Overall Length (in.): 19.00 in.
Product Attributes - Thickness (in.): 4.250
Product Attributes - Width (in.): 7.880 in.
Product Attributes - Outlet Style: Standard, without tip
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor40659
SFX Item ID	4225299
Supplier Item Code	4225299
Manufacturer SKU	40659
Manufacturer UPC	808422406598
Alternative References	2.5in