Borla XR-1 Low Profile Multicore Muffler — 2.5in Inlet/Outlet 4in x 16in

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SKU: BOR401382
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About Borla Borla Performance Industries was founded in 1978 and ...Read More

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Sale price$265.99 Regular price$296.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Borla

Borla Performance Industries was founded in 1978 and remains America's premium cat-back exhaust brand. Every Borla system is hand-built from T-304 austenitic stainless steel and backed by a million-mile warranty — the OE choice for Camaro ZL1, Mustang GT350, and Chevy Corvette.

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Unmatched Performance in a Low-Profile Package

The Borla XR-1 Low Profile Multicore muffler is the ultimate choice for enthusiasts dealing with ground clearance issues. Whether you are working on a classic muscle car or a modern late-model vehicle, the compact 4-inch by 16-inch body allows for a clean fitment without sacrificing the aggressive sound and performance Borla is known for. This muffler is engineered to provide superior sound attenuation while maintaining maximum horsepower and torque.

Advanced Multicore Technology

  • Core Design: Patented Multicore technology
  • Dimensions: 4-inch x 16-inch body, 21-inch overall length
  • Inlet/Outlet: 2.5-inch diameter
  • Material: T-304 stainless steel
  • Durability: 100% welded construction

At the heart of the XR-1 is Borla’s patented Multicore design, which uses high-temperature continuous-filament fiber (CFF) acoustic material to manage sound waves without creating restrictive backpressure. The result is a free-flowing muffler that delivers a deep, racing-inspired tone. The T-304 stainless steel construction ensures that your muffler will not only perform flawlessly but also look great for years to come. You can even polish the natural mill finish to a mirror-like shine for a custom look under your vehicle. Trusted by racers and street enthusiasts alike, Borla brings professional-grade exhaust technology to your garage. Experience the difference in quality and sound with premium parts from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Borla

Borla Performance Industries was founded in 1978 and remains America's premium cat-back exhaust brand. Every Borla system is hand-built from T-304 austenitic stainless steel and backed by a million-mile warranty — the OE choice for Camaro ZL1, Mustang GT350, and Chevy Corvette.

Watch in action

Unmatched Performance in a Low-Profile Package

The Borla XR-1 Low Profile Multicore muffler is the ultimate choice for enthusiasts dealing with ground clearance issues. Whether you are working on a classic muscle car or a modern late-model vehicle, the compact 4-inch by 16-inch body allows for a clean fitment without sacrificing the aggressive sound and performance Borla is known for. This muffler is engineered to provide superior sound attenuation while maintaining maximum horsepower and torque.

Advanced Multicore Technology

  • Core Design: Patented Multicore technology
  • Dimensions: 4-inch x 16-inch body, 21-inch overall length
  • Inlet/Outlet: 2.5-inch diameter
  • Material: T-304 stainless steel
  • Durability: 100% welded construction

At the heart of the XR-1 is Borla’s patented Multicore design, which uses high-temperature continuous-filament fiber (CFF) acoustic material to manage sound waves without creating restrictive backpressure. The result is a free-flowing muffler that delivers a deep, racing-inspired tone. The T-304 stainless steel construction ensures that your muffler will not only perform flawlessly but also look great for years to come. You can even polish the natural mill finish to a mirror-like shine for a custom look under your vehicle. Trusted by racers and street enthusiasts alike, Borla brings professional-grade exhaust technology to your garage. Experience the difference in quality and sound with premium parts from GGCRACING.

Product Details

Product Description

About Borla

Borla Performance Industries was founded in 1978 and remains America's premium cat-back exhaust brand. Every Borla system is hand-built from T-304 austenitic stainless steel and backed by a million-mile warranty — the OE choice for Camaro ZL1, Mustang GT350, and Chevy Corvette.

Watch in action

Unmatched Performance in a Low-Profile Package

The Borla XR-1 Low Profile Multicore muffler is the ultimate choice for enthusiasts dealing with ground clearance issues. Whether you are working on a classic muscle car or a modern late-model vehicle, the compact 4-inch by 16-inch body allows for a clean fitment without sacrificing the aggressive sound and performance Borla is known for. This muffler is engineered to provide superior sound attenuation while maintaining maximum horsepower and torque.

Advanced Multicore Technology

  • Core Design: Patented Multicore technology
  • Dimensions: 4-inch x 16-inch body, 21-inch overall length
  • Inlet/Outlet: 2.5-inch diameter
  • Material: T-304 stainless steel
  • Durability: 100% welded construction

At the heart of the XR-1 is Borla’s patented Multicore design, which uses high-temperature continuous-filament fiber (CFF) acoustic material to manage sound waves without creating restrictive backpressure. The result is a free-flowing muffler that delivers a deep, racing-inspired tone. The T-304 stainless steel construction ensures that your muffler will not only perform flawlessly but also look great for years to come. You can even polish the natural mill finish to a mirror-like shine for a custom look under your vehicle. Trusted by racers and street enthusiasts alike, Borla brings professional-grade exhaust technology to your garage. Experience the difference in quality and sound with premium parts from GGCRACING.

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