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  • Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
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Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
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Load image into Gallery viewer, Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
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Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382

Exhaust, Mufflers & Tips Muffler
Borla
bor401382
Backordered
August 1, 2026
$265.99 $296.99
XR-1® Multi-Core Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length. Compact 4" diameter muffler body is perfect for applications with limited space and can be used on a wide range of vehicles. This muffler is sometimes referred to as a 'Hot Rod' muffler. It features BORLA®'S patented Multi-Core 3 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1® mufflers flows better than straight tubing. Recommend for high horsepower applications. Reversible design for installation flexibility. T-304 Stainless steel will never rust. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CRF) acoustic material for sound control. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Features & Benefits Can be used on a wide range of vehicles. Sometimes referred to as a 'Hot Rod' muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length Compact 4" diameter muffler body is perfect for applications with limited space Universal muffler. Reversible design. Multi-Core 3 tube internal design
Borla Universal ProXS Muffler - Oval Dual/Dual Inlet/Outlet 2.5in Tubing 19inx4inx9.5in Case - 400493
Borla Universal ProXS Muffler - Oval Dual/Dual Inlet/Outlet 2.5in Tubing 19inx4inx9.5in Case - 400493
$322.99 $288.99
Borla Corvette Z06 X Pipe - 60087
Borla Corvette Z06 X Pipe - 60087
$598.99 $534.99
Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler - 401382
SKU: bor401382
Product Details

Everything You Need To Know

Review product information, shipping and returns, and price-match details before you order.

Product Info

XR-1® Multi-Core Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length. Compact 4" diameter muffler body is perfect for applications with limited space and can be used on a wide range of vehicles. This muffler is sometimes referred to as a 'Hot Rod' muffler. It features BORLA®'S patented Multi-Core 3 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1® mufflers flows better than straight tubing. Recommend for high horsepower applications. Reversible design for installation flexibility. T-304 Stainless steel will never rust. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CRF) acoustic material for sound control. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Features & Benefits

  • Can be used on a wide range of vehicles. Sometimes referred to as a 'Hot Rod' muffler.
  • 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length
  • Compact 4" diameter muffler body is perfect for applications with limited space
  • Universal muffler. Reversible design.
  • Multi-Core 3 tube internal design
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Include the following:
Subject "Return for Order#"
Order Number
Part Number
Reason

Returns are eligible for up to 14 days from delivery of items. Accepted refunds can take up to 7-10 business days to process. All refunds are subject to a 25% restocking fee, if opened. Customer may be responsible for return shipping. If 14 days have gone by since your item was delivered, unfortunately we can’t guarantee you a refund or exchange. We reserve the right to deny any return request, based on provided information.

Alliance Racing is not responsible for ensuring part fitment. It is the responsibility of the purchaser to ensure the parts being ordered are the correct fitment for the vehicle intended. Alliance Racing will not accept any returns for incorrect fitment after product is opened.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Shipping

To return your product, mail your product to:
Alliance Racing LLC
8810 Twin Lakes Blvd
Tampa, FL 33614

In many cases, you will be responsible for shipping costs to return your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping will be deducted from your refund.

Depending on your location, the time it may take for your exchanged product to reach you may vary.

If you are shipping an item over $100, you should consider using a trackable shipping service and/or purchasing Shipping Insurance.

To initiate a price match, please e-mail sales@allianceracing.com with the product information (SKU, URL, & Part Name) and a link to the competitors product page for us to validate the price match eligibility.

Please note that there are cases when we cannot offer a price match, but we will do everything in our power to try to match it. Some manufacturers have Pricing Policies that we have to adhere to.

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