SKU: 14919081381

Borla 3in ID In/Out x 34in x 8.5 in x 5.5in Oval XR-1 Multi-core Racing Muffler

Sale price$290.25 Regular price$322.50
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  • USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Borla 3in ID In/Out x 34in x 8.5 in x 5.5in Oval XR-1 Multi-core Racing MufflerXR 1 Multi Core Racing Muffler. 3" Center Inlet 3" Center Outlet 5. 5" x 8. 5" Oval x 34" Long Body 39. 25" Overall Length. Designed for Pre Runner trucks. Long body design works well on SUVs & trucks but can be used on a wide range of other vehicles including rotary engine equipped vehicles. Body has reinforcing ribs. It features BORLA'S patented Multi Core 4 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1

XR-1® Multi-Core Racing Muffler. 3" Center Inlet/ 3" Center Outlet 5.5" x 8.5" Oval x 34" Long Body 39.25" Overall Length. Designed for Pre-Runner trucks. Long body design works well on SUVs & trucks but can be used on a wide range of other vehicles including rotary engine equipped vehicles. Body has reinforcing ribs. It features BORLA®'S patented Multi-Core 4 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 T-304 stainless steel wool packing for sound control. There is no BORLA® logo embossment on this part. 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.

  • Designed for Pre-Runner vehicles, but can be used on other applications including rotary engines
  • Multi-Core 4 tube internal design. High temperature T-304 stainless steel wool for sound control
  • 3" Center Inlet/ 3" Center Outlet 5.5" x 8.5" Oval x 34" Long Body 39.25" Overall Length
  • Universal Muffler. Reversible Design. No BORLA® logo embossement.
  • Long body design works well on SUV & truck applications
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 14919081381

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Liza Jane
Phoenix, US
★★★★★ 5
Quality and comfort
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Comfortable and fit well. I got these to replace a very old pair that finally wore out! Warmth is medium (I wear puffer booties for when it's really cold). Quality on these is great!
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Reviewed in the United States on March 9, 2026
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V M T R
Bozeman, US
★★★★★ 5
Can't go wrong with Acorn for as long as they last!
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Acorn is just a great company all around. I had bought my husband these slippers over 20 years ago. They are still in great shape although the sole has worn in some places. But nothing's coming apart! However, I decided to replace them for him. His foot is 10.5 and they are a little hard to get on right away-of course, after over 20 years of having "worn in" the original pair, anything would feel tight. So I'm not holding this against them. They will relax with use. The only difference is that the original sole was black and these are tan. I think I would prefer the black, but since it's only being worn in the house, no big deal. My husband has really cold feet and these slippers never fail to warm his feet right up! He said they feel really soft to walk in and like the cushioning. They're not too heavy and fit him great! I have Acorn slippers myself that I've worn every single day in the house and outside to the mailbox too. They last.
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Reviewed in the United States on April 11, 2026
M
Verified Purchase
Michael
West Palm Beach, US
★★★★★ 4
Very warm.
Size: 13.5-14.5 Women/12-13 Men, Color: Navy Blue
Very warm and comfortable. A little difficult to put on with the collared top.
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Reviewed in the United States on January 19, 2026
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Cheryl
West Palm Beach, US
★★★★★ 5
You won't be sorry
Size: 10.5-11.5 Women/9-10 Men, Color: Black
Great padding for comfort and terrific warmth. I bought a pair of Acorns 30 years ago and still have them. Updated to a new color and now feel the benefit of newer padding! I used the sizing listed for shoes and like the roominess for thicker sox. Well made and a joy to put on. (Wisconsin)
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Reviewed in the United States on December 25, 2025
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Bureau of Review
Cuba, US
★★★★★ 5
Great Slippers
Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
Comfy, great price, looks great, fits well, size aligned, great quality. Love these slippers.
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Reviewed in the United States on February 16, 2026

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