SKU: 58434622840

Borla 40728 - XR-1 Multicore Collector Muffler Standard

Sale price$341.10 Regular price$379.00
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Description

Borla 40728 - XR-1 Multicore Collector Muffler StandardThis is the HOT set up in drag racing. This patented, award and race winning vacuum Wave Collector was designed to replace your current open header collector and serves as a power producing merge collector and muffler all in a single unit. The technology in this unit results in pulling air through the engine faster, which creates more power. When an exhaust valve opens, an energy wave is created from the expanding combustion gases. When this wave

This is the HOT set up in drag racing. This patented, award and race-winning vacuum Wave Collector was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. The technology in this unit results in pulling air through the engine faster, which creates more power. When an exhaust valve opens, an energy wave is created from the expanding combustion gases. When this wave encounters a lower pressure area such as a larger collector pipe or the atmosphere, a reversion wave is reflected back toward the exhaust valve. Borla's Vacuum Wave Collector Muffler ensures this wave's "anti-node" reaches the exhaust valve at the precise time for its lower pressure to help fill the combustion chamber with a fresh charge and to further extract spent gases from the chamber via a vacuum effect. Made with a patented, award and race winning multicore high flow design just like the standard XR-1(r) muffler for maximum power. This muffler is recommended for Dragsters, Altereds, and Roadsters. Accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, and NSCA. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. T-304 stainless steel wool 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.


Specifications:

Description_ASM XR-1(r) Multicore Collector Racing Muffler - (4) 2.25" Inlets (1) 4" Outlet 6.75" Round x 18.5" Long Body 20.5" Overall Length. Universal Part.
Description_DEF Exhaust Muffler
Description_DES XR-1 Multicore Collector Muffler Standard
Description_EXT XR-1 Multi-Core Collector Racing Muffler - 2.25" Inlets (4)/ 4" Outlet 6.75" Round x 18.5" Long Body 20.5" Overall Length. Universal Part.
Description_INV Borla(r) XR-1 Collector Muffler
Description_MKT This is the HOT set up in drag racing. This patented, award and race-winning vacuum Wave Collector was designed to replace your current open header collector and serves as a power producing merge collector and muffler -- all in a single unit. The technology in this unit results in pulling air through the engine faster, which creates more power. When an exhaust valve opens, an energy wave is created from the expanding combustion gases. When this wave encounters a lower pressure area such as a larger collector pipe or the atmosphere, a reversion wave is reflected back toward the exhaust valve. Borla's Vacuum Wave Collector Muffler ensures this wave's "anti-node" reaches the exhaust valve at the precise time for its lower pressure to help fill the combustion chamber with a fresh charge and to further extract spent gases from the chamber via a vacuum effect. Made with a patented, award and race winning multicore high flow design just like the standard XR-1(r) muffler for maximum power. This muffler is recommended for Dragsters, Altereds, and Roadsters. Accepted in NHRA, IHRA, Hot Rod Series, Brackets, Super Chevy, and NSCA. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. T-304 stainless steel wool 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.
Description_SHO XR-1 Collector


Shipping Notes
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Exchange/Return Notes
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SKU: 58434622840

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Betty C.
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★★★★★ 4
Sturdy and great looking
Color: Black
Great product, looks good.
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Reviewed in the United States on April 20, 2026
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Valeria Mayers
Whiting, US
★★★★★ 5
Kitchen organizer
Color: Black, Color: Black
5 star appearance, material, no assembly just place cup in the fitted area. ! Holds all my washing tools, dish detergent, rubber gloves n dish rag together; perfect. I thought it would be too small. Fits perfectly on the sink top.
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Reviewed in the United States on April 12, 2026
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Staci
Bozeman, US
★★★★★ 5
Something I never knew I needed, and now can’t live without!
Color: Black, Size: Large, Color: Black, Size: Large
Absolutely perfect, high quality organizer. I was constantly reaching under the kitchen cupboards for sponges and drain stoppers which then cluttered up the sink while letting them dry before putting away. I love the size and option to put the basket on the outside edge for more space. It holds everything I need. I especially like the stone underneath so I can place it anywhere and not have to worry about a drain spout. Keeps my sink and counters clean and organized and looks great in my kitchen.
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Reviewed in the United States on January 1, 2026
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Di Anna Hollingsworth
Phoenix, US
★★★★★ 5
Best kitchen caddy!
Color: Black, Size: Large
This is the best kitchen caddy. It works well on the edge of my sink. It's a little bigger than I thought. My measurements were off, not there's. I propped up one side and it works beautifully. It holds all the sponges, soap, and cleaning utensils needed to clean your dishes. Now my kitchen sink is clutter-free. It also looks great!
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Reviewed in the United States on March 8, 2026
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Rachel
Birmingham, US
★★★★★ 4
Great little organizater
Color: Black, Size: Large
Was smaller then what I expected but it fit the space and is made well
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Reviewed in the United States on December 1, 2025

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