Borla XR-1 Multi-Core 2.5in Center/Center 17in x 12in x 4in Round Racing Muffler

SKU: BOR401384

Mufflers

BOR XR-1 Mufflers

Borla

Borla XR-1 Multi-Core 2.5in Center/Center 17in x 12in x 4in Round Racing Muffler

SKU: BOR401384

Mufflers

BOR XR-1 Mufflers

LOW STOCK! Est Ship 3-5 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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Description

XR-1(r) Multi-Core Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Compact 4" diameter muffler body is perfect for applications with limited space and can be used on a wide range of vehicles. This muffler is sometimes referred to as a 'Hot Rod' muffler. It features BORLA(r)'S patented Multi-Core 3 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1(r) mufflers flows better than straight tubing. Recommend for high horsepower applications. Reversible dsign for installation flexibility. T-304 Stainless steel for superior corrosion resistance. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CRF) acoustic material for sound control. Best of all, it's made in the USA. Just what you’d expect from the world’s most experienced (and most winning) exhaust brand.

Product Overview

The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish, if desired. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Product Details

Description:	Borla XR-1 Multi-Core 2.5in Center/Center 17in x 12in x 4in Round Racing Muffler
Grade Type:	Performance
Inlet/Outlet Configuration:	Center/Center
Notch:	N
Part Number:	bor401384
Title Extended:	Low profile Multicore Muffler 2.5in Center in/out 4in Round x 12in case 17in Overall Length. Non directional. Part # 401384
Title:	XR-1 Multi-Core Racing Muffler 2.5in Center Inlet/ 2.5in Center Outlet 4in Round x 12in Long Body

Application Summary

XR-1 Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-12 01:47:31

Features

2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length
Can be used on a wide range of vehicles. Sometimes referred to as a 'Hot Rod' muffler.
Compact 4" diameter muffler body is perfect for applications with limited space
Multi-Core 3 tube internal design
Universal muffler. Reversible design.

Specifications

Product Attributes - UPC: 808422013840
Product Attributes - Brand: Borla
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Round
Product Attributes - Reversible: Yes
Product Attributes - Outlet Style: Standard, without tip
Product Attributes - Product Line: Borla XR-1 Racing Mufflers
Product Attributes - Inlet Location: Center
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Brushed
Product Attributes - Outlet Location: Center
Product Attributes - Outlet Quantity: 1
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.50 in.
Product Attributes - Overall Length (in.): 17.00 in.
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Outlet Diameter (in.): 2.50 in.
Product Attributes - Case Exterior Length (in.): 12.00 in.
Product Attributes - Manufacturer's Part Number: 401384
Product Attributes - Case Outside Diameter (in.): 4.00 in.

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor401384
SFX Item ID	4225338
Supplier Item Code	4225338
Manufacturer SKU	401384
Manufacturer UPC	808422013840
Alternative References	xr-1, 2.5in, 17in, 12in, 4in

Brochures

Primary brochure

Compatibility

XR-1 Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design.

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