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Ships within 48 hours · Estimated delivery Aug 3 - Aug 8
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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
4.4 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Smells Clean & Wonderful
Scent: Berry Bubbly, Size: 20 Fl Oz (Pack of 1)
I got the strawberry fizz wash and it smells divine! It lathers up nicely and provides a good clean feel. It washes cleanly so no residue or stickiness afterwards. Olay is a great product and I would like to try the Wicked scent as well. After using this once, my skin felt soft and amazing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 16, 2026
★★★★★ 5
One of Olay’s best
Scent: Melon Spritz, Size: 20 Fl Oz (Pack of 1)
This is amazing! Smells wonderful! Makes your skin so soft and silky! It doesn’t leave it feeling too greasy. All in all it’s a ten out of ten for me!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Perfect for a skin reset
Style: Updated Formula
Sometimes I just need to reset my skin and use gentle non-irritating products. This set is perfect. The thermal water spray is the BEST. I travel with it and it always keeps my skin calm. And hydrated.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
“Great starter kit for sensitive skin
Style: Updated Formula
The products are gentle, soothing, and didn’t cause any irritation. My skin feels calmer, hydrated, and healthier after using them. Perfect size to try the routine before buying the full products.” ⭐⭐⭐⭐⭐
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 5
Dermatologist recommended; soothing for sensitive skin
Style: Updated Formula
Recommended by my dermatologist for sensitive skin. So comforting! Appreciate the sample size kit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
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