Borla Universal Pro-XS Center/Offset Config. Oval 2.25in (19x4x9.5in Case Size) Muffler

SKU: BOR40664

Mufflers

BOR Pro-XS Mufflers...

Borla

Borla Universal Pro-XS Center/Offset Config. Oval 2.25in (19x4x9.5in Case Size) Muffler

SKU: BOR40664

Mufflers

BOR Pro-XS Mufflers...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

We accept

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

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.; 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.

Features and Benefits

Reversible design
Universal muffler
Alternate muffler with Notched necks is 400483. Use 1" wide band clamps 18322.
Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003.

Product Details

Body Height (in.):	4
Body Height:	4.000 in.
Body Length (in.):	19
Body Length:	19.000 in.
Body Width (in.):	9.5
Body Width:	9.500 in.
Construction:	All Welded
Description:	BorlaÃ‚Â® Pro XS Muffler
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Position:	Center
Inlet Size (in.):	2.25
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:	2.250 in.
Outlet Position:	Offset
Outlet Size (in.):	2.25
Outlet Type:	Single Offset Outlet
Overall Length (in.):	24 (2 ft.)
Overall Length:	24.000 in.
Part Number:	bor40664
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 2.25in Offset/Center 19inx4inx9.5in Part # 40664
Title:	ProXS Muffler 2.25in Offset Inlet/ 2.25in Center Outlet 4in x 9.5in Oval x 14in Long Body

Application Summary

ProXS? Muffler 2.25" Offset Inlet/ 2.25" 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: 2026-10-15 02:12:38

Features

2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 19" Long Body, 24" Overall Length
Alternate muffler with Notched necks is 400483. Use 1" wide band clamps 18322.
Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003.
Universal muffler. Reversible design.

Specifications

Product Attributes - Brand: Borla
Product Attributes - Manufacturer's Part Number: 40664
Product Attributes - Part Type: Mufflers
Product Attributes - Product Line: Borla Performance Turbo XL Mufflers
Product Attributes - UPC: 808422406642
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.25 in.
Product Attributes - Outlet Diameter (in.): 2.25 in.
Product Attributes - Inlet Quantity: 1
Product Attributes - Outlet Quantity: 1
Product Attributes - Internal Construction: Turbo-style
Product Attributes - Inlet Location: Center
Product Attributes - Outlet Location: Offset
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: Yes
Product Attributes - Muffler Finish: Brushed
Product Attributes - Case Exterior Length (in.): 19.00 in.
Product Attributes - Overall Length (in.): 24.00 in.
Product Attributes - Thickness (in.): 4.000
Product Attributes - Width (in.): 9.500 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	bor40664
SFX Item ID	4224567
Supplier Item Code	4224567
Manufacturer SKU	40664
Manufacturer UPC	808422406642
Alternative References	2.25in, (19x4x9.5in