SKU: 24119975881

Borla 401384 - XR-1 Multicore Muffler

Sale price$139.50 Regular price$155.00
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 29 - Oct 4

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Description

Borla 401384 - XR-1 Multicore MufflerThe compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high temperature continuous filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T 304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like

The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish, if desired. 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.

Exhaust Muffler; XR-1; T-304 Stainless Steel; 4 Inch Diameter Case; Single 2-1/2 Inch Inner Diameter Center Inlet; Single 2-1/2 Inch Outer Diameter Center Outlet; 12 Inch Body/17 Inch Overall Length

Features & Benefits

  • Reversible Design For Installation Flexibility
  • High-Quality T-304 Austenitic Stainless Steel Will Never Rust
  • 100 Percent Welded Construction For Strength. Free Flow Design For Improved Performance
  • Free Flow Design For Improved Performance
  • Limited Million Mile Warranty

Attributes

  • Shape: Round
  • Inlet Position: Center Single
  • Inlet Diameter (IN): 2-1/2 Inch
  • Outlet Position: Center Single
  • Outlet Diameter (IN): 2-1/2 Inch
  • Universality: Semi-Universal
  • Estimated Install Time (Hours): 1
  • Case Diameter (IN): 4 Inch
  • Case Length (IN): 12 Inch
  • Overall Length (IN): 17 Inch
  • Color/ Finish: Silver Bare
  • Material: Stainless Steel
  • Includes Tip: Without Tip
  • Tip Length (IN): Without Tip
  • Tip Diameter (IN): Without Tip
  • Tip Finish: Without Tip
  • Tip Material: Without Tip


Specifications:

Description_ASM XR-1? Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design.
Description_DEF Exhaust Muffler
Description_DES XR-1 Multicore Muffler
Description_EXT XR-1? Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design.
Description_INV BorlaXR-1 Multi-Core Muffler
Description_MKT The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish, if desired. 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.
Description_SHO XR-1 Multi-Core


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: 24119975881

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4.8 ★★★★★
Based on 14 reviews
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M
Verified Purchase
Michael
Draper, US
★★★★★ 5
Comfortable dress shoe.
Size: 7, Color: Brown Napa Leather
Finally a comfortable dress shoe. It's both comfortable to walk in and looks and wears like a more traditional dress shoes for the office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
C
Verified Purchase
Christopher
Lake Worth, US
★★★★★ 5
Slip-on ready and great quality
Size: 9, Color: Black
These shoes were stuff for the first half hour but then feel great. Well worth the chance and money. Great quality and slip-on easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
D
Verified Purchase
Derek Preston
Chelsea, US
★★★★★ 5
Great buy
Size: 11, Color: Tan
Great fit comfortable look good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
mike t.
Fort Morgan, US
★★★★★ 5
Great shoes
Size: 14 Wide, Color: Black
My shoes look good and feel good and now I’m going to purchase the brown pair I saw
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
N
Verified Purchase
Nicholas D. Clark
Los Angeles, US
★★★★★ 4
Don’t buy for restaurant industry
Size: 10.5, Color: Black, Size: 10.5, Color: Black
Good looking shoes, fairly comfortable and good value based on the description shared, so I don’t feel it’s fair to rate them lower than 4 stars. I had high hopes for them based on previous reviews from others saying they wore them in the food and beverage industry that mentioned their quality and durability, however I strongly recommend looking elsewhere if you do. I purchased these to wear working in a full service upscale restaurant and in less than two months have managed to have torn the material on the middle exterior section and the bottoms of the shoes are already completely worn down. Good design, but the durability needs to be improved if they’re to hold up for that industry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2025

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