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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
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Description
Borla 400371 - XR-1 Multicore MufflerDesigned for rotary engine equipped vehicles, but can be used on other applications. Compact size is perfect for applications with limited space. 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 (CRF) accoustic material for sounds control. There
Designed for rotary engine equipped vehicles, but can be used on other applications. Compact size is perfect for applications with limited space. 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 (CRF) accoustic material for sounds 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 4.25" x 7.88" Oval x 16" Long Body 21" Overall Length. Universal Part. 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 4.25" x 7.88" Oval x 16" Long Body 21" Overall Length. Universal Part. Reversible Design. |
| Description_INV | BorlaXR-1 Multi-Core Muffler |
| Description_MKT | Designed for rotary engine equipped vehicles, but can be used on other applications. Compact size is perfect for applications with limited space. 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 (CRF) accoustic material for sounds 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
4.1 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Our dog loves it!
My dog loves this toy! He gets to play fetch with it after his dinner, and looks forward to that time so much. Great construction!
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Reviewed in the United States on November 25, 2025
★★★★★ 5
Perfect
Fast delivery -exactly what Daisy wished for
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Squeak isn’t too Loud or obnoxious. Good quality.
Good quality, dog loves it.
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Reviewed in the United States on July 8, 2025
★★★★★ 3
Quality issues
The first one the squeaker did not work, the second one the seam on the wing had a fault so it didn’t not last more than an hour or two before it was taken away.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Tall Tails Fan
My Boston Terrier loves tall Tails toys. However, they do not seem to be lasting as long. However, I continue to purchase because she has to have their chipmunk to go to sleep nightly.
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Reviewed in the United States on February 20, 2026