XR-1® Raceline

Featuring a patented uninterrupted-flow internal design and our Multicore technology, our XR-1® mufflers outflow a straight piece of pipe in repeated testing. For racing applications only!

Four important reasons racers win with Borla

  • You fear what you can't hear. Especially in any kind of breakout drag racing where you can "sneak up" on an opponent
  • Improved driver awareness. Drivers in all forms of racing can better tell what their cars are doing
  • No loss in performance. Fact is, in some cases Borla's patented XR-1® mufflers actually improved horsepower over a straight piece of pipe
  • Reduced driver fatigue. Very important in many forms of competition

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Features

  • T-304 stainless steel will never rust our thickest material
  • 100% welded construction is track-tough
  • Free-flow design for improved performance
  • XR-1's race-proven design attenuates sound without restricting flow
  • Hi-temp Continuous Filament Fiber (CRF) or T-304 Stainless Steel wool (depending on app) for sound control
  • Sportsman mufflers feature hi-temp Continuous Filament Fiber (CFF) acoustic material for sound control
  • Natural mill finish can be brushed or polished prior to installation
  • Reversible design for installation flexibility
  • Recommended for high-horsepower racing applications
XR-1® Raceline(3)
XR-1 Raceline
40722-main-1-thumb.jpg
Has Valves FALSE

  • Universal muffler. Reversible design.
  • Long body design works well on SUV & truck applications
  • Can be used on a wide range of vehicles including rotary engine equipped vehicles
  • 3.5" Center Inlet/ 3.5" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length
  • Multi-Core 6 tube internal design. High temperature T-304 stainless steel wool for sound control

Price: $348.99
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XR-1 Raceline
401012-main-1-thumb.jpg
Has Valves FALSE

  • Universal muffler. Reversible design.
  • Designed for applications where a 6.25" round muffler body can be used
  • Will work on a wide range of vehicles
  • 3.5" Center Inlet/ 3.5" Center Outlet 6.25" Round x 14" Long Body 19.75" Overall Length
  • Multi-Core 4 tube internal design

Price: $319.99
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XR-1 Raceline
400261-main-1-thumb.jpg
Has Valves FALSE

  • Universal muffler. Reversible design.
  • Long body design works well on SUV & truck applications
  • Can be used on a wide range of vehicles including rotary engine equipped vehicles
  • 3.5" Center Inlet/ 3.5" Center Outlet 6.25" Round x 24" Long Body 29" Overall Length
  • Multi-Core 6 tube internal design. High temperature T-304 stainles steel wool for sound control.

Price: $437.99
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