Borla XR-1 Multi-Core Racing Muffler, Part Number 401382, 2.5-Inch Center Inlet and Outlet

XR-1(r) Multi-Core Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" 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 design 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. XR-1 Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.

• Can be used on a wide range of vehicles. Sometimes referred to as a 'Hot Rod' muffler.
• 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length
• Compact 4" diameter muffler body is perfect for applications with limited space
• Universal muffler. Reversible design.
• Multi-Core 3 tube internal design

The Borla XR-1 Multi-Core Racing Muffler is a compact, high-flow exhaust solution designed for high-performance and high-horsepower applications. Part Number 401382 features a 2.5-inch center inlet and 2.5-inch center outlet, along with a 4-inch round body and 16-inch body length. Its compact profile makes it well suited for vehicles with limited exhaust-system space, while the reversible design provides added installation flexibility.

At the heart of this universal muffler is Borla’s patented Multi-Core three-tube internal design, engineered to support excellent exhaust flow, horsepower, and torque. The Multi-Core section can flow better than conventional straight tubing, helping reduce restriction in demanding racing and performance applications. High-temperature continuous-filament fiber acoustic material provides sound control while supporting durability under elevated exhaust temperatures.

Constructed from T-304 stainless steel, the Borla XR-1 offers excellent corrosion resistance and long-term strength. Its natural mill finish can be brushed or polished before installation for a customized appearance. Fully welded construction enhances structural durability, and the muffler is manufactured in the USA. This is a universal automotive muffler and may require custom fabrication or additional exhaust components for installation. Vehicle-specific fitment is not provided.

Key Product Specifications & Technical Data

• Brand: Borla
• Part Number: 401382
• Product Type: XR-1 Multi-Core racing muffler
• Inlet Configuration: 2.5-inch center inlet
• Outlet Configuration: 2.5-inch center outlet
• Body Shape: Round, compact-profile body
• Internal Design: Patented Multi-Core three-tube construction
• Material and Finish: T-304 stainless steel with natural mill finish

What’s Included

One Borla XR-1 Multi-Core universal racing muffler. Exhaust tubing, clamps, hangers, gaskets, and installation hardware are not included unless separately specified.

Features:

• High-Flow Performance: Patented Multi-Core three-tube construction is engineered to promote strong exhaust flow, horsepower, and torque.
• Compact Universal Design: The low-profile round body is ideal for applications with limited installation space and can be used across a wide range of vehicles.
• Reversible Installation: Center inlet and outlet positioning allows installation in either direction for greater exhaust-system flexibility.
• Durable Stainless Steel Construction: T-304 stainless steel, fully welded construction, and high-temperature acoustic fiber provide corrosion resistance and dependable performance.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1