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Vehicle Info NeededBORLAPART NUMBER: 157-400261
XR-1 Multi-Core Racing Muffler Type: Round
$43799
Ships on 09/08/2026
Lowest Price GuaranteeMulti-Core Racing Mufflers
- 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''
- Race Muffler
- Patented Multi-Core Technology
- Million Mile Warranty
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.
Part TypeMuffler
Product LineBorla XR-1 Racing Mufflers
BrandBORLA
Package Height8.0
Package Width8.5
Package Length31.5
Weight15.84 PG
Part CategoryPerformance Parts
Outlet QuantityOne
Inlet LocationCenter
Inlet PositionCenter
Main Piping Diameter3.500 in.
Inlet TypeSingle Center Inlet
Inlet Size (In.)3.5
Outlet StyleStandard, without tip
Muffler FinishBrushed
Body Length24.000 in.
Muffler Count1
Inlet Diameter3.5 in (88.9 mm)
Inlet QuantityOne
Outlet Outside Diameter3.500 in.
Muffler MaterialStainless steel
Outlet Size3.5 in (88.9 mm)
ConstructionAll Welded
Inlet Connection TypePipe
Outlet Diameter3.5 in (88.9 mm)
QuantitySold individually
Overall Length29.000 in.
MaterialT-304 Stainless Steel
Case Length24 in (609.6 mm)
Internal ConstructionGlass-wrap perforated tube
Case ShapeRound
Body Width6.250 in.
Outlet LocationCenter
Body Height6.250 in.
Outlet TypeSingle Center Outlet
Case Outside Diameter6.25 in (158.75 mm)
Part FitmentUniversal
Outlet PositionCenter
Vendor Part Number400261
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
