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Description
Borla 40997 - 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) 2.125" Inlets (1) 3.5" Outlet 6.25" 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 - 2.125" Inlets (4) 3.5" Outlet 6.25" 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 |
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4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Packed with knowledge and mystery!
Format: Paperback
I gave this book 5 stars because this is an exhaustive compendium of mythological knowledge in one short (505 pages) volume. It is professorial in writing design, which includes excerpts in Latin, French and German, as well as the many words and phrases from India, Mesopotamia, northern Europe, Pacifiic islands and so forth. I recommend reading the appendices in the order they are referred to in the main text. I read them last and did not glean an understanding that accompanied the chapters. All in all, this is a researcher's book with 29 pages of bibliography material, with extensive notes at the bottom of the pages so one can stay on text. Good luck and enjoy the perusal of mythology, astronomy/astrology, history, poetry and fable. Great reading!
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Reviewed in the United States on September 8, 2015
★★★★★ 4
Interesting connections made.
Format: Paperback
I bought this because or had been referred to in several other excellent books I've read. Very scholarly and good case made but a bit dry and overdone/redundant at times when making a point. And if you've studied a lot, nothing really new revealed- but if just starting down this road, some great comparisons made.
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Reviewed in the United States on August 19, 2025
★★★★★ 5
Seminal
Format: Paperback
As many have noted, Hamlet's Mill is not an "easy" read, but it is an absolutely worthwhile experience not only to read but to re-read this seminal thesis on the transmission of ancient astronomical knowledge through mythology and legend. Perhaps the fact that a reader must wrestle with this text is part of the reason that it has generated so many fruitful inquiries and theories by later authors. The entire book is rich with ideas, many of which the authors drop and then pick up again and again later in the text, some of which are simply left for later analysts to pursue further on their own. Slice into it at any point and you will find a rich vein of material that can suggest new avenues for you to explore in the ancient history and literatures of the world. Sometimes an easy read or a text that hands you all of its answers and does the work for you is not "what the doctor ordered." Hamlet's Mill definitely makes more sense the second and even third time through. That in and of itself makes this book worth your while -- it's a gift that keeps on giving, a book you can keep on reading, even after you reach the end!
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Reviewed in the United States on April 21, 2011
★★★★★ 5
Love learning new things!
Format: Paperback
Love the book but unless you have a foreknowledge of myths from around the world and the experts that have written about them, you will need your phone next to you to look up everything that is being talked about. Like, on every page. Not an easy read.
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Reviewed in the United States on January 14, 2022
★★★★★ 5
Properly intellectual, and both demanding and rewarding as such
Format: Paperback
Anyone who plans to read this book is likely to know its premise already, so, I will not spend time or effort to recap it. All I can say is that the way the book is more eloquent, is altogether smarter, and more beautifully written than I expected. This is a true intellectual treat written with proper intellectual verve. So, no conspiracy theorists, or the simpleton believers in ancient aliens need not apply. If, however, you achieved a proper academic attainment - got your Masters or PhD and enjoy intellectual stimulation, this is a rare gem, to be digested slowly and deliberately, as no similar book is to be encountered any time soon. In other words, just a great book, presenting fascinating thoughts. It does not need anyone’s endorsement, as it is already a well-known entity within its field, yet, here it is – very heartily recommend!
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Reviewed in the United States on June 5, 2017