Home / Shop / Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler

Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler

SKU: BOR400478

Mufflers

BOR Pro-XS Mufflers...

Borla

Borla Universal Center/Offset Oval 2.25in Tubing 14in x 4in x 9.5in PRO-XS Notched Muffler

SKU: BOR400478

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

Notched necks for easy clamp-on installation. 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's Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Product Details

Body Height (in.):	4
Body Height:	4.000 in.
Body Length (in.):	14
Body Length:	14.000 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.):	18
Overall Length:	18.000 in.
Part Number:	bor400478
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 14inx4inx9.5in Part # 400478
Title:	ProXS Muffler 2.25in Offset Inlet/ 2.25in Center Outlet 4in x 9.5in Oval x 14in Long Body Notched Necks

Application Summary

ProXS? Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-14 07:35:47

Features

2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length
Alternate muffler with Un-Notched necks is 40357. If clamping, use 3" wide band clamps 18003.
Notched necks are designed for clamp in installation. Use 1" wide band clamps 18322.
Universal muffler. Reversible design.

Specifications

Product Attributes - UPC: 808422004787
Product Attributes - Brand: Borla
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: Yes
Product Attributes - Width (in.): 9.500 in.
Product Attributes - Product Line: Borla ProXS Mufflers
Product Attributes - Inlet Location: Center
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Natural
Product Attributes - Outlet Location: Offset
Product Attributes - Outlet Quantity: 1
Product Attributes - Thickness (in.): 4.000 in.
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.25 in.
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Outlet Diameter (in.): 2.25 in.
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Manufacturer's Part Number: 400478

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor400478
SFX Item ID	4225205
Supplier Item Code	4225205
Manufacturer SKU	400478
Manufacturer UPC	808422004787
Alternative References	2.25in, 14in, 4in, 9.5in

Brochures

Primary brochure

Compatibility

ProXS? Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4" x 9.5" Oval, 14" Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks.

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