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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
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Description
Borla 400373 - XR-1 Multicore MufflerDesigned for rotary engine equipped vehicles, but can be used on other applications. Long body is perfect for truck applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T 304 Stainless steel will never rust. 100% welded construction for strength. High temperature continuous filament fiber (CFF) acoustic material for sound control. There is no logo
Designed for rotary engine equipped vehicles, but can be used on other applications. Long body is perfect for truck applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. There is no logo embossment on this part. 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? Multi-Core Racing Muffler For Rotary Engine Equipped Vehicles - 3" Center Inlet/ 3" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Parts. Reversible Design. |
| Description_DEF | Exhaust Muffler |
| Description_DES | XR-1 Multicore Muffler |
| Description_EXT | XR-1? Multi-Core Racing Muffler For Rotary Engine Equipped Vehicles - 3" Center Inlet/ 3" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Parts. Reversible Design. |
| Description_INV | BorlaXR-1 Multi-Core Muffler |
| Description_MKT | Designed for rotary engine equipped vehicles, but can be used on other applications. Long body is perfect for truck applications. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. There is no logo embossment on this part. 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
4.6 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Simple and cute
Size: 2pcs, Color: C. Black, Size: 2pcs, Color: C. Black
Easy installation. Seems sturdy as of right now that I’ve had it for about a month. Goes really well with my bathroom theme so i am content with my purchase 😊 not too bulky or big.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Nice touch to my bathroom
Size: 3pcs, Color: A. Brown
I’ve had these up a couple months now and they’ve really added a nice look to the bathroom! Easy to put up, sturdy, not cheap looking.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Great price for a great product
Size: 3pcs, Color: A. Brown, Size: 3pcs, Color: A. Brown
Love! They totally changed the game for the look of my bathroom and perfectly hold the plants I want to get a little more humidity ❤️
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Reviewed in the United States on May 4, 2026
★★★★★ 4
Attractive, easy to install, not the strongest
Size: 3pcs, Color: A. Brown, Size: 3pcs, Color: A. Brown
We bought these shelves as part of a bathroom refresh. They installed easily, and were easy to align because of the included little bubble level. The shelves came with plenty of screws and mollies, especially because we only wound up installing two out of three. I like the storage basket, which holds a few rolls of toilet paper nicely. The shelves fit snuggly on the floating rods, especially after fully installed.
The one downside is they feel a little cheap. The shelf does not feel super sturdy, so I wouldn't put anything really heavy on it. For bathroom decorations, it looks great, but this is not a system for storing lots of books.
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Reviewed in the United States on September 8, 2025
★★★★★ 5
Great set for the price!
Size: 3pcs, Color: A. Brown
Really nice shelf set for the price. The shelves look great, were easy to install, and are sturdy. I love the flexibility you have in setting the height of each shelf and the distance from one shelf to another if placing them together on a wall. You can arrange them how you'd like - straight under one another, staggered, on a diagonal. And the fact that you can place them on multiple walls is a great feature as well. Really happy with this purchase.
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Reviewed in the United States on February 14, 2026