SKU: 73353398435

Borla 40976 - XR-1 Multicore Collector Muffler Shorty

Sale price$321.75 Regular price$357.50
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Description

Borla 40976 - XR-1 Multicore Collector Muffler ShortyThis 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 the same patented, award and race winning flow through design as the Standard XR-1(r) Collector/Muffler. This muffler, however, is designed for door car applications where a Standard size Collector/Muffler is too large. This muffler is recommended for Full Chassied Cars. 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 Shorty Collector Racing Muffler - (4) 2.25" Inlets (1) 4" Outlet 6.75" Round x 14" long Body 16" Overall Length. Universal Part.
Description_DEF Exhaust Muffler
Description_DES XR-1 Multicore Collector Muffler Shorty
Description_EXT XR-1 Multi-Core Shorty Collector Racing Muffler - 2.25" Inlets (4)/ 4" Outlet 6.75" Round x 14" long Body 16" 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 the same patented, award and race winning flow through design as the Standard XR-1(r) Collector/Muffler. This muffler, however, is designed for door car applications where a Standard size Collector/Muffler is too large. This muffler is recommended for Full Chassied Cars. 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: 73353398435

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Kindle Customer
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★★★★★ 5
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Color: Wisconsin Badgers, Style: NCAA #1 Fan Toy
Dogs haven't destroyed it so that's 5 stars in my house
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Reviewed in the United States on December 23, 2025
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Patty Cates
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★★★★★ 5
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Color: Kentucky Wildcats, Style: NCAA #1 Fan Toy
My grand puppy loves loves this hand. I buy 1 every year for her. It’s her favorite puppy toy!!
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Reviewed in the United States on December 29, 2025
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Susan
West Palm Beach, US
★★★★★ 5
A Touchdown Toy for My Pups!
Color: Michigan Wolverines, Style: NCAA #1 Fan Toy
This has been a huge hit in our house! As a die-hard Michigan fan, I was thrilled to find a toy that combines my love for the Wolverines with my puppies playtime. The toy is well-made, durable, and the perfect size for fetch and tug-of-war games between my two pups. Not only is it tough enough to withstand some rough play, but it also holds up well after multiple washes. If you're a Michigan fan and want to spoil your furry friend with a toy that's both functional and fan worthy, this is the perfect choice. Go Blue and go fetch!
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Reviewed in the United States on December 24, 2024
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Amazon Customer
Fort Morgan, US
★★★★★ 5
Best toy
Color: Georgia Bulldogs, Style: NCAA #1 Fan Toy
My dog absolutely loves this. Best toy, Go Dawgs!
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Reviewed in the United States on April 28, 2025
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J.P.
Pawtucket, US
★★★★★ 3
Not for Aggressive Chewers
Color: Georgia Bulldogs, Style: NCAA #1 Fan Toy
Not for aggressive chewers. My puppy ripped it open as soon as I gave it to him.
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Reviewed in the United States on November 10, 2025

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