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Borla XR-1 Racing Mufflers


Borla
Borla XR-1 Racing Mufflers

Product images may differ from actual product appearance.

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, XR-1 Mufflers actually outflowed a straight pipe in repeated testing. XR-1 Race Products are made of quality austenitic stainless steel for track-tough durability. 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. Made in the USA!

Features
  • Multicore technology
  • Straight-through design for maximum flow
  • Austenitic stainless steel for reduced weight
  • Welded 1-piece construction for improved integrity
  • Sound-absorbing stainless steel guards against burnout


  • 30 Products
    Accessories
    Borla 20146 -
    157-20146
    XR-1 Turndowns/Turnouts
  • Inlet Diameter: 4''
  • Case Size: 7''
  • FREE
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    $75.99
    Order Today Ships 05/06/16
    Collector Mufflers
    Borla 40703 -
    157-40703
    XR-1 Collector Muffler
  • Type: Standard
  • Inlet Diameter: 2-3/8''
  • Outlet Diameter: 4-1/2''
  • Case Size: 20-1/2'' x 6-3/4''
  • FREE
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    $661.99
    Order Today Ships 05/06/16
    Borla 40997 -
    157-40997
    XR-1 Collector Muffler
  • Type: Shorty
  • Inlet Diameter: 2-1/8''
  • Outlet Diameter: 3-1/2''
  • Case Size: 14'' x 6-1/4''
  • FREE
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    $640.99
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    Borla 40976 -
    157-40976
    XR-1 Collector Muffler
  • Type: Shorty
  • Inlet Diameter: 2-1/4''
  • Outlet Diameter: 4''
  • Case Size: 14'' x 6-3/4''
  • FREE
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    $654.99
    Ships
    Borla 40977 -
    157-40977
    XR-1 Collector Muffler
  • Type: Shorty
  • Inlet Diameter: 2-3/8''
  • Outlet Diameter: 4-1/2''
  • Case Size: 14'' x 6-3/4''
  • FREE
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    $654.99
    Order Today Ships 05/06/16
    Borla 40728 -
    157-40728
    XR-1 Collector Muffler
  • Type: Standard
  • Inlet Diameter: 2-1/4'' Oval
  • Outlet Diameter: 4'' Oval
  • Case Size: 14'' x 6-3/4''
  • FREE
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    $661.99
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    Junior Dragster Racing Mufflers
    Borla 40483 -
    157-40483
    XR-1 Junior Dragster Racing Muffler
  • Type: Full Size
  • Inlet Diameter: 1-3/4''
  • Outlet Diameter: 2-1/4''
  • Case Size: 13'' x 4-1/2''
  • FREE
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    $318.99
    Order Today Ships 05/12/16
    Marine Performance Mufflers
    Borla 400262 -
    157-400262
    XR-1 Wet/Dry Marine Performance Muffler
  • Type: Round
  • Inlet Diameter: 4''
  • Outlet Diameter: 5''
  • Case Size: 12''
  • FREE
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    $830.99
    Order Today Ships 05/06/16
    Multi-Core Racing Mufflers
    Borla 40741 -
    157-40741
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 4''
  • Outlet Diameter: 4''
  • Case Size: 16'' x 6-1/4''
  • FREE
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    $299.99
    Order Today Ships 05/06/16
    Borla 40575 -
    157-40575
    XR-1 Multi-Core Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 16'' x 4-1/4'' x 7-7/8''
  • FREE
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    $282.99
    Ships
    Borla 400372 -
    157-400372
    XR-1 Multi-Core Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 12'' x 4-1/4'' x 7.88''
  • FREE
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    $257.99
    Order Today Ships 06/08/16
    Borla 400261 -
    157-400261
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 24'' x 6-1/4''
  • FREE
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    $353.99
    Order Today Ships 05/06/16
    Borla 400374 -
    157-400374
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 4''
  • Outlet Diameter: 4''
  • Case Size: 16'' x 6-1/4''
  • FREE
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    $291.99
    Order Today Ships 05/06/16
    Borla 400373 -
    157-400373
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 16'' x 6-1/4''
  • FREE
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    & HANDLING!
    $282.99
    Order Today Ships 05/09/16
    Borla 400371 -
    157-400371
    XR-1 Multi-Core Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 16'' x 4-1/4'' x 7.88''
  • FREE
    SHIPPING
    & HANDLING!
    $282.99
    Ships
    Borla 40722 -
    157-40722
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 16'' x 6-1/4''
  • FREE
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    & HANDLING!
    $282.99
    Order Today Ships 05/13/16
    Borla 400115 -
    157-400115
    XR-1 Multi-Core Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 34'' x 8-1/2'' x 5-1/2''
  • FREE
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    & HANDLING!
    $474.99
    Order Today Ships 05/06/16
    Borla 400024 -
    157-400024
    XR-1 Multi-Core Racing Muffler
  • Type: Round
  • Inlet Diameter: 2-1/2''
  • Outlet Diameter: 2-1/2''
  • Case Size: 14'' x 6-1/4''
  • FREE
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    & HANDLING!
    $247.99
    Ships
    Racing Bullet Mufflers
    Borla 40641 -
    157-40641
    XR-1 Racing Bullet Muffler
  • Midgets, Mini Sprints & Dwarf Cars
  • Inlet Diameter: 2-1/2''
  • Outlet Diameter: 2-1/2''
  • Case Size: 14'' x 3-1/2''
  • FREE
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    $199.99
    Ships
    Sportsman Racing Mufflers
    Borla 40947 -
    157-40947
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 4''
  • Outlet Diameter: 4''
  • Case Size: 12'' x 4-1/2'' x 7.88''
  • FREE
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    & HANDLING!
    $190.99
    Order Today Ships 05/23/16
    Borla 40942 -
    157-40942
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 2-1/2''
  • Outlet Diameter: 2-1/2''
  • Case Size: 16'' x 4-1/2'' x 7.88''
  • FREE
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    & HANDLING!
    $155.99
    Ships
    Borla 40944 -
    157-40944
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 16'' x 4-1/2'' x 7.88''
  • FREE
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    & HANDLING!
    $155.99
    Ships
    Borla 40946 -
    157-40946
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 16'' x 4-1/2'' x 7.88''
  • FREE
    SHIPPING
    & HANDLING!
    $190.99
    Ships
    Borla 40948 -
    157-40948
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 4"
  • Outlet Diameter: 4"
  • Case Size: 16" x 4-1/2" x 7.88"
  • FREE
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    & HANDLING!
    $214.99
    Ships
    Borla 40085 -
    157-40085
    XR-1 Sportsman Racing Muffler
  • Type: Round
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 15'' x 5''
  • FREE
    SHIPPING
    & HANDLING!
    $140.99
    Order Today Ships 05/17/16
    Borla 40941 -
    157-40941
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 2-1/2''
  • Outlet Diameter: 2-1/2''
  • Case Size: 12'' x 4-1/2'' x 7.88''
  • FREE
    SHIPPING
    & HANDLING!
    $142.99
    Ships
    Borla 40086 -
    157-40086
    XR-1 Sportsman Racing Muffler
  • Type: Round
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 15'' x 5''
  • FREE
    SHIPPING
    & HANDLING!
    $141.99
    Order Today Ships 05/16/16
    Borla 40943 -
    157-40943
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3''
  • Outlet Diameter: 3''
  • Case Size: 12'' x 4-1/2'' x 7.88''
  • FREE
    SHIPPING
    & HANDLING!
    $150.99
    Ships
    Borla 40945 -
    157-40945
    XR-1 Sportsman Racing Muffler
  • Type: Oval
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 12'' x 4-1/2'' x 7.88''
  • FREE
    SHIPPING
    & HANDLING!
    $179.99
    Ships
    Borla 40004S -
    157-40004S
    XR-1 Sportsman Racing Muffler
  • Type: Round
  • Inlet Diameter: 3-1/2''
  • Outlet Diameter: 3-1/2''
  • Case Size: 8'' x 5''
  • FREE
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    & HANDLING!
    $175.99
    Ships

    30 Products