- Exhaust Systems
- Mufflers
- Borla XR-1 Racing Mufflers
Multicore Racing Mufflers
Borla XR-1 Racing Mufflers are the choice of today's hottest drag and oval track racers. With a patented straight-through design and multicore technology, Borla XR-1 Mufflers actually outflowed a straight pipe in repeated testing. They use sound-absorbing stainless steel packing to prevent burnout and meet the strictest noise requirements. Hands down, Borla's XR-1 Series offers the best balance of sound and power.
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Multi-Core Racing Mufflers
XR-1 Multi-Core Racing MufflerType: Oval Inlet Diameter: 3'' Outlet Diameter: 3'' Case Size: 34'' x 8-1/2'' x 5-1/2''
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$479.99
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XR-1 Multi-Core Racing MufflerType: Oval Inlet Diameter: 3'' Outlet Diameter: 3'' Case Size: 16'' x 4-1/4'' x 7.88''
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$298.99
Estimated to ship direct from manufacturer on 04/29/25, pending manufacturer availability.
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XR-1 Multi-Core Racing MufflerType: Oval Inlet Diameter: 3'' Outlet Diameter: 3'' Case Size: 12'' x 4-1/4'' x 7.88''
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$262.99
Estimated to ship direct from manufacturer on 04/30/25, pending manufacturer availability.
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XR-1 Multi-Core Racing MufflerType: Oval Inlet Diameter: 3'' Outlet Diameter: 3'' Case Size: 16'' x 4-1/4'' x 7-7/8''
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$299.99
Estimated to ship direct from manufacturer on 05/02/25, pending manufacturer availability.
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 2-1/2'' Outlet Diameter: 2-1/2'' Case Size: 14'' x 6-1/4''
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$256.99
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 3-1/2'' Outlet Diameter: 3-1/2'' Case Size: 24'' x 6-1/4''
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$373.99
Estimated to ship direct from manufacturer on 05/02/25, pending manufacturer availability.
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 3 in. Outlet Diameter: 3 in. Case Size: 16 in. x 6-1/4 in. 21 in. Overall Length
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$291.99
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 4'' Outlet Diameter: 4'' Case Size: 16'' x 6-1/4''
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$334.99
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 3-1/2'' Outlet Diameter: 3-1/2'' Case Size: 16'' x 6-1/4''
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$299.99
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 4'' Outlet Diameter: 4'' Case Size: 16'' x 6-1/4''
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$348.99
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XR-1 Multi-Core Racing MufflerType: Round Inlet Diameter: 2.5 in. Outlet Diameter: 2.5 in. Case Size: 16 in. x 4 in. 21 in. Overall Length
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$242.99
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Racing Bullet Mufflers
XR-1 Racing Bullet MufflerMidgets, Mini Sprints & Dwarf Cars Inlet Diameter: 2-1/2'' Outlet Diameter: 2-1/2'' Case Size: 14'' x 3-1/2''
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$207.99
Estimated to ship direct from manufacturer on 05/02/25, pending manufacturer availability.
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Sportsman Racing Mufflers
XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 2-1/2'' Outlet Diameter: 2-1/2'' Case Size: 12'' x 4-1/2'' x 7.88''
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$149.99
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XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 2-1/2'' Outlet Diameter: 2-1/2'' Case Size: 16'' x 4-1/2'' x 7.88''
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$164.99
(1)
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XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 3'' Outlet Diameter: 3'' Case Size: 16'' x 4-1/2'' x 7.88''
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$165.99
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XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 3-1/2'' Outlet Diameter: 3-1/2'' Case Size: 12'' x 4-1/2'' x 7.88''
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$178.99
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XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 4'' Outlet Diameter: 4'' Case Size: 12'' x 4-1/2'' x 7.88''
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$192.99
(2)
Estimated to ship direct from manufacturer on 04/29/25, pending manufacturer availability.
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XR-1 Sportsman Racing MufflerType: Oval Inlet Diameter: 4" Outlet Diameter: 4" Case Size: 16" x 4-1/2" x 7.88"
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$216.99
Estimated to ship direct from manufacturer on 05/02/25, pending manufacturer availability.
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XR-1 Sportsman Racing MufflerType: Round Inlet Diameter: 3-1/2'' Outlet Diameter: 3-1/2'' Case Size: 8'' x 5''
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$178.99
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XR-1 Sportsman Racing MufflerType: Round Inlet Diameter: 3-1/2'' Outlet Diameter: 3-1/2'' Case Size: 15'' x 5''
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$155.99
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