SKU: 12933641201

Borla XR1 Multicore Muffler (400371)

Sale price$134.55 Regular price$149.50
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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6

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Description

Borla XR1 Multicore Muffler (400371)Borla XR 1 Multi Core 3" Center Center 16" x 4. 25" x 7. 88" Rotary Engine Equipped Racing Muffler (400371) BORLA's XR 1 raceline products are the choice of today's hottest racers. Featuring a patented uninterrupted flow design and multi core technology, BORLA's XR 1 mufflers actually outflow a straight piece of pipe. XR 1 race products are made in the USA and constructed of high quality T 304 stainless steel for track tough durability. They meet the

Borla XR-1 Multi-Core 3" Center-Center 16" x 4.25" x 7.88" - Rotary Engine Equipped Racing Muffler (400371)

BORLA's XR-1® raceline products are the choice of today's hottest racers. Featuring a patented uninterrupted-flow design and multi-core technology, BORLA's XR-1® mufflers actually outflow a straight piece of pipe. XR-1® race products are made in the USA and constructed of high-quality T-304 stainless steel for track tough durability. They meet the strictest noise requirements. Multi-Core, Collector, and Bullet Racing mufflers feature steel wool packing for sound control. Sportsman mufflers feature high temperature continuous filament fiber (CFF) for sound control. Hands down, BORLA®’s XR-1® raceline parts offer the best balance of sound and power.

Features:

  • T-304 stainless steel will never rust — our thickest material.
  • Free-flow design for improved performance.
  • 100% welded construction is track-tough.
  • Multicore, Collector, and Bullet Racing muffler feature steel wool packing for sound control.
  • XR-1®'s race-proven design attenuates sound without restricting flow.
  • Sportsman mufflers feature high temperature continuous filament fiber (CFF) for sound control.
  • Reversible design for installation flexibility.
  • Recommended for high-horsepower racing applications.

Designed for rotary engine equipped vehicles, but can be used on other applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. Steel wool packing for sound control. There is no 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.

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: 12933641201

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Jerred B.
Belleville, US
★★★★★ 5
True to size
Size: 9.5, Color: White/Black
True to size and a very nice pair of leather shoes.
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Reviewed in the United States on April 3, 2026
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abuhamzi
Fort Morgan, US
★★★★★ 5
Love it
Size: Large, Color: Grey Marl, Size: Large, Color: Grey Marl
Nice quality fits nice
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Reviewed in the United States on March 28, 2024
C
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Checo
Birmingham, US
★★★★★ 5
I love this Polo Shirt
I love this Polo Shirt. Fits as expected before wash. Since it's 100% cotton, I hope it doesn't shrink. I'll update if it does...
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Reviewed in the United States on August 31, 2016
A
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Amazon Customer
Phoenix, US
★★★★★ 4
Four Stars
Good fit & like the material.
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Reviewed in the United States on July 15, 2016
B
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Bryce Oblinger
Phoenix, US
★★★★★ 5
Fits well for the well fit
I'm 5'9" with a gym build. I fill the chest and arms well with the size small. Fabric is soft.
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Reviewed in the United States on October 3, 2016

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