Skip to content

Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing Muffler

Marsoni M251S
Sale price$149.50
Pay 4 payments of $37.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing MufflerSKU: 400371 UPC: 808422003711 Borla XR 1 Multi Core 3in Ctr Ctr Oval 16in x 4. 25in x 7. 88in Rotary Engine Equipped Racing Muffler 400371 Mazda RX 7 RX 8 Borla 400371 XR 1 Multi Core racing muffler delivers aggressive exhaust note and power gains for rotary engine vehicles like Mazda RX 7 and RX 8. This universal reversible oval muffler with patented Multi Core technology fits tight spaces while enhancing torque fuel economy and engine longevity.
Easy Shipping

Quick Dispatch:

Your Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing Muffler orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing Muffler ships.

Need Help?
Questions about Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing Muffler, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 16in x 4.25in x 7.88in Rotary Engine Equipped Racing Muffler in your area.

Get Shipping Estimates

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 2063 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Claudia Garfield
Alexandria, US
★★★★★ 5
Perfect ball
Size: Medium
Our dog loves these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
T
Verified Purchase
Timothy john starkweather
San Leandro, US
★★★★★ 4
Soild
Size: Medium
The orange and blue ball is perfect. Once start taken because the because the blue noisy one was a little to easy for my dog to start ripping pieces off. Will say most toys do not survive his chewing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
C
Verified Purchase
Christy D.
Waukegan, US
★★★★★ 5
Aggressive chewer who loves fetch approved!!
Size: Medium, Size: Medium
I highly recommend the Chuck-It brand in general, especially for dogs with an aggressive bite. These balls are awesome and are the most durable balls I’ve bought for my 50 lbs lab mix. He has not been able to break one of them yet and we’ve had a few of the squeaky balls for months. They are a bit pricey but worth it. The one in the pic has been used for months, lives outside and you can see it’s still in great shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
T
Verified Purchase
Tasha U
Natrona Heights, US
★★★★★ 5
Good quality dog ball for playing fetch
Size: Medium
My dog and family love these chuck it balls to play fetch with our dog. They are durable and fun. They squeak which is added fun for any dog! Regular tennis balls my dog chews apart and they get pretty gross after playing and being left outside. These can be easily washed off and cleaned. These balls last! Would recommend to anyone with a dog and would purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 17, 2025
R
Verified Purchase
ryan johnson
Omaha, US
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025

recommand products