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Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler

SKU: BOR40004S

Mufflers

BOR XR-1 Mufflers...

Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler

SKU: BOR40004S

Mufflers

BOR XR-1 Mufflers...

A$409.27
IN STOCK! Est Ship 3-5 days. In stock at 3 locations (more than 10 available)

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Description

Muffler - XR-1 Sportsman - 3.5 in Center Inlet - 3.5 in Center Outlet - 8 x 5 in Round Body - 13 in Long - Stainless - Natural - Universal - Each

Additional Information

This part is designed and intended for installation in Ancient (Model Year 1974 or earlier), or Competition, or Racing Vehicles. Competition or Racing Vehicles may be operated exclusively in 1) events organized by recognized bodies with authorizing permits for participating drivers. 2) racing event qualification, and 3) practice associated with events. Installation and operation of this part in a non-Ancient street driven Vehicle, including driving Competition or Racing Vehicles to the racetrack, is likely to be considered illegal Tampering or a Defeat Device

XR-1 Sportsman Muffl

XR-1(r) Sportsman Racing Muffler. 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length. Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 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. There is no logo embossment on this part. Hands down, BORLA(r)'s XR-1(r) raceline parts offer the best balance of sound and power. 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.

Additional Information

XR-1 Sportsman Racing Muffler - 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Product Overview

High quality austenitic stainless steel. Patented, race-winning XR-1 Raceline technology. 3 options: Offset - Made with the same patented, flow through design as the XR-1 Sportsman oval. The inlet/outlet are offset to the same side of the muffler, to accommodate transmission and frame rail interference on some applications Oval -- BORLAs #1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and highest flowing racing muffler in its class and at a competitive price. Record-holder Hurley Blakeney has run BORLAs on his AA/AT Ford T-Bird because he loves the quieter driver compartment without giving up any power.Round - Made with the same patented, flow through design as the XR-1 Sportsman Oval. This Muffler is 5 inches in diameter and 15 inches long. Designed for door car/ roadster applications that require a compact round muffler.


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 17:21:47

Data: v4.2 - Upd: 2026-11-11 01:04:23

Features

  • 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length
  • Compact size is perfect for applications with limited space
  • There is no logo embossment on this part
  • Un-Notched necks are designed for weld in installation
  • Universal muffler. Reversible design.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Body Height (in.):5
Body Height:5.000 in.
Body Length (in.):8
Body Length:8.000 in.
Body Width (in.):5
Body Width:5.000 in.
Construction:All Welded
Description:XR-1® Stainless Sportsman Racing Mufflers
Grade Type:Performance
Inlet Connection Type:Pipe
Inlet Position:Center
Inlet Size (in.):3.5
Inlet Type:Single Center
Main Piping Diameter:3.500 in.
Material:T-304 Stainless Steel
Muffler Count:1
Off Road Use Only:No
Outlet Outside Diameter:3.500 in.
Outlet Position:Center
Outlet Size (in.):3.5
Outlet Type:Single Center Outlet
Overall Length (in.):13
Overall Length:13.000 in.
Part Number:bor40004S
Shape:Round
Title Extended:XR-1 Sportsman 3.5in Center-Center 8inx5in Round - Racing Muffler Part # 40004S
Title:XR-1 Sportsman Racing Muffler 3.5in Center Inlet/ 3.5in Center Outlet 5in Round x 8in Long Body

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Borla, Borla Exhaust
StreetFX SKU bor40004S
SFX Item ID 4224903
Accounting SKU bor-40004S
Manufacturer SKU 40004S
Manufacturer UPC 808422400046
Alternative References 40004S, BOR-40004S

Muffler, XR-1, Round, 3 1/2 in. Center Inlet/3 1/2 in Center Outlet, Stainless Steel, Brushed, Each

Whether you're drag racing or Circle Track racing, Borla has an XR-1 racing muffler for you. In fact, the 16 in. Shootout mufflers are rated the highest-flowing mufflers on the market.

Features include:
• Straight-through design for maximum flow
• Aircraft-quality T-304 stainless steel construction for reduced weight that will never rust
• All-welded, one-piece design for increased structural integrity
• Stainless steel, sound-absorbing material to protect against burnout

Product Attributes
UPC808422400046
BrandBorla
NotesStraight through design for maximum flow. Continuous filament fiber acoustic material for sound control.
QuantitySold individually.
Part TypeMufflers
Case ShapeRound
ReversibleNo
Product LineBorla XR-1 Racing Mufflers
Inlet LocationCenter
Inlet Quantity1
Muffler FinishBrushed
Outlet LocationCenter
Outlet Quantity1
Muffler Material304 stainless steel
Inlet Diameter (in.)3.50 in.
Overall Length (in.)12.00 in.
Internal ConstructionStraight-through core
Outlet Diameter (in.)3.50 in.
Case Exterior Length (in.)8.00 in.
Manufacturer's Part Number40004S
Case Outside Diameter (in.)5.00 in.

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