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Description
Borla 40703 - 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_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 |
| Description_ASM | XR-1(r) Multicore Collector Racing Muffler - (4) 2.375" Inlets (1) 4.5" Outlet 6.75" Round x 18" Long Body 20" 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 - 2.375" Inlets (4)/ 4.5" Outlet 6.75" Round x 18" Long Body 20" Overall Length. Universal Part. |
| Description_INV | Borla(r) XR-1 Collector Muffler |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.6 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
My babies love their Benebones!
Flavor Name: REAL Bacon, Size: Large, Flavor Name: REAL Bacon, Size: Large
My one-year old pittie is 60lbs and has severe allergies to EVERYTHING, she's on medicated food and all the crazy things, and so I was trying to find something that wouldn't mess up her regimen by her ingesting it. This is PERFECT. She loves her medium sized Benebone! She carries it everywhere haha. I have three other big dogs, and got the largest one for my 110lb German Shepherd and she also loves it. I keep an eye on the edges and sand them down if I find anything sharp.
These things are TOUGH. My pitbull can eat a massive bully stick in less than ten minutes, and she's barely made a dent in this thing! My GSD is a little more delicate and likes to savor and enjoy her toys, so hers isn't progressing as fast. She eats Yak Chews in around 30 minutes (and those things are like concrete!)
I think these will easily last a month, possibly more, and for the price you can't beat it. The value is insane. I spend maybe 200$ a month on rawhide alternatives and bully sticks and yak chews for them, and these 14$ things last infinitely longer. BTW these things hurt like a mother trucker when you step on them, so keep an eye on where they are haha they're big and heavy!
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Reviewed in the United States on November 9, 2025
★★★★★ 5
Love these for super chewers
Flavor Name: REAL Bacon, Size: Large
I have two pit bulls and they destroy everything. These have held up very well for weeks. I use the cups for their morning yogurt and can even use hot water wand soap to wash them out. These are a great value for the money and the dogs love to carry them around in their mouths and even tug o war with them. Highly recommend.
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Reviewed in the United States on April 15, 2026
★★★★★ 3
Good
Flavor Name: REAL Bacon, Size: Medium
Decent product, my dog likes it, except I think it’s made of some kind of plastic
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Great chew toy
Size: Small (Pack of 1)
Dog likes it chews on it all the time good for a teething puppy
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Great quality!
Size: Small (Pack of 1)
After a year, this chew toy is still holding on! My 1 year old Basset Hound has yet to destroy it (even though she seems to be abke to destroy everything! )
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
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