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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
For Your Every Summer RSVP, with Code: SUMMER15
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 |
Shipping Notes
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4.2 ★★★★★
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Product Reviews
★★★★★ 5
Couple Win
Color: Spa Blue, Size: King
The Amazon Basics Lightweight Soft King Size Comforter has been a wonderful purchase for our home! The comforter is incredibly soft, comes in beautiful colors, and is the perfect lightweight option for year-round use. My husband and I have very different sleep preferences—I tend to run hot while he’s always cold—but this comforter somehow works perfectly for both of us. It’s breathable enough that I stay comfortable while still providing enough warmth for him. We finally started sharing the same blanket again, which is a win in itself! Highly recommend for couples with different temperature preferences. 🛏️💕✨
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Reviewed in the United States on May 31, 2026
★★★★★ 5
High quality in every way!
Color: Blush, Size: Full/Queen
Very soft and beautiful! Nothing skimpy about this one! Very pleased.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Light Weight but Not Hot
Color: Dark Grey, Size: King
Ok... I absolutely love this comforter. In fact, I use it on three different beds. The colors are perfect. The material is soft. It's extremely light weight, but it keeps you warm in the winter and does not overheat you in the summer. I have this in King and Queen, and the sizing has been good for both. I have thrown it in my washing machine multiple times, and it holds up well. Great quality, low price.
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Reviewed in the United States on December 3, 2025
★★★★★ 3
Navy is pretty, but doesn’t feel like a great quality set.
Color: Navy Blue, Size: King
I purchased the Navy. The color is great and the pleated pattern is a nice touch. My daughter has the white and it’s very soft. The navy is not, though. So that was disappointing. It’s also not breathable. It’s not thick, but just not breathable. I actually get pretty warm at night with this one when I don’t normally with any other blankets. It also seems on the small side. We have a king and always buy king, this just feels a little smaller. Doesn’t feel high quality. I would not buy again.
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Reviewed in the United States on October 11, 2025
★★★★★ 5
Nice product
Color: White, Size: Twin XL (Pack of 10)
All good
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Reviewed in the United States on August 16, 2025