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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
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Description
Borla 401384 - XR-1 Multicore MufflerThe compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high temperature continuous filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T 304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like
The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish, if desired. 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.
Exhaust Muffler; XR-1; T-304 Stainless Steel; 4 Inch Diameter Case; Single 2-1/2 Inch Inner Diameter Center Inlet; Single 2-1/2 Inch Outer Diameter Center Outlet; 12 Inch Body/17 Inch Overall Length
Features & Benefits
- Reversible Design For Installation Flexibility
- High-Quality T-304 Austenitic Stainless Steel Will Never Rust
- 100 Percent Welded Construction For Strength. Free Flow Design For Improved Performance
- Free Flow Design For Improved Performance
- Limited Million Mile Warranty
Attributes
- Shape: Round
- Inlet Position: Center Single
- Inlet Diameter (IN): 2-1/2 Inch
- Outlet Position: Center Single
- Outlet Diameter (IN): 2-1/2 Inch
- Universality: Semi-Universal
- Estimated Install Time (Hours): 1
- Case Diameter (IN): 4 Inch
- Case Length (IN): 12 Inch
- Overall Length (IN): 17 Inch
- Color/ Finish: Silver Bare
- Material: Stainless Steel
- Includes Tip: Without Tip
- Tip Length (IN): Without Tip
- Tip Diameter (IN): Without Tip
- Tip Finish: Without Tip
- Tip Material: Without Tip
Specifications:
| Description_ASM | XR-1? Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design. |
| Description_DEF | Exhaust Muffler |
| Description_DES | XR-1 Multicore Muffler |
| Description_EXT | XR-1? Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Universal Part. Reversible Design. |
| Description_INV | BorlaXR-1 Multi-Core Muffler |
| Description_MKT | The compact diameter of these mufflers make them great for both classic and late model cars with ground clearance issues. Sound is attenuated with the Borla patented Multicore design and high-temperature continuous-filament fiber (CFF) acoustic material, without losing any horsepower or torque. 100% welded construction for strength. Built with T-304 stainless steel they have unequaled durability and great looks that you can polish to a mirror like finish, if desired. 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 Multi-Core |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 4
Cool & comfy
Color: Dark Gray Seersucker, Size: King(108"x90")
Cool but not as cold as I wanted
Very soft and comfy though
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Cooling Blanket is a sleep saver for me!
This is the second product I have used from bedsmile and as with the other one, this is a great product! It truly is a cooling blanket. I am a very hot sleeper and live in a hot, humid climate, so this has been a sleep saver for me! One side is silky smooth and feels so good on your skin. The other side has a texture to it which is great if you want to use it as your only bedding, which I do. It covers well and hangs over the edges as it should. I ordered the white one and it is bright and unblemished. The silky side magically feels much cooler than typical bedding and keeps me cooler during the night. It is lightweight but heavy enough to make you feel that you are "under the covers". In my opinion, putting additional covers over it would defeat the purpose but if you live in a cooler climate, it would still be beneficial to use this blanket as the silky coolness would help get a good night's sleep anywhere. Another great benefit of this product is that it does not have any strange odors when unpacking. I did wash it before using, but honestly, I am not sure it was necessary.
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Reviewed in the United States on March 20, 2026
★★★★★ 5
Comfortable all night
Size: Queen, Color: White
So cozy! The cooling effect is nice. The pillow case is super soft and my favorite part. Made well. I personally wish it was just a little thicker, but overall recommend it!
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Love it
Size: Queen, Color: White
This is such a nice pillow protector. It is super soft, the zipper works great, it has a decent weight to it, and definitely keeps the pillow cooler. I’m very impressed.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great product! I love the feel of these.
Size: Queen, Color: White
“I recently purchased the Serta Power Chill Cooling Pillow Protectors, and they have been a game-changer for my sleep comfort. These pillow protectors have exceeded my expectations in several ways.
First and foremost, the cooling technology is fantastic. I tend to sleep hot, especially during the summer months, and these pillow protectors have made a noticeable difference. They keep my pillows cool and comfortable throughout the night, which has led to more restful and uninterrupted sleep.
The fit is also excellent. They easily slip over my standard-sized pillows and stay securely in place without any annoying bunching, wrinkles or slipping during the night. And the zipper is amazing. Having no wrinkles in my cover is easier on my hair.
What’s great about these protectors is that they not only keep my pillows cool but also protect them from spills, stains, and allergens. It gives me peace of mind knowing that my pillows are safeguarded while I enjoy a cool and refreshing sleep environment. There is no noise when sleeping on this cover, it’s soft.
Cleaning is a breeze. They are machine-washable and maintain their cooling properties even after multiple washes.
The quality of the materials used is evident. These protectors feel durable and well-made, promising long-lasting use.
While they are slightly more expensive than basic pillow protectors, the added cooling benefits and protection they offer are well worth the investment. They’ve made a significant difference in my sleep quality, and I highly recommend the Serta Power Chill Cooling Pillow Protectors to anyone seeking a cooler and more comfortable night’s sleep.”
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Reviewed in the United States on October 6, 2023