FR SPORT
Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4 40722
Frequently bought together
Product details
BOR XR-1 Mufflers
Exhaust Muffler
XR-1? Multi-Core Racing Muffler For Venues Requiring A Muffler - 3.5" Center Inlet/ 3.5" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.
Million Mile Warranty
BORLA XR-1 Raceline products are the choice of todays hottest drag and oval track racers. Featuring a patented uninerrupted-flow design and multicore technology. BORLAs XR-1 mufflers actually outflow a straight piece of pipe in repeated testing. XR-1 race products are light weight and constructed of high quality austenitic stainless steel for track-tough durability. They meet the strictest noice requirements and use sound absorbing stainless steel pcking to protect against burnout. Hands down, BORLAs XR-1 Raceline offers the best balance of sound and power.
XR-1 Stainless Multicore Racing Mufflers.
SKU: 0K8R5
Why customers choose Ride Rite
Tesla & EV specialists
Every part is matched to your exact car — verified fitment, not a generic catalog.
Mobile install across the Bay Area
Skip the shop — our team comes to you for professional installation throughout California.
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Orders over $150 ship free and fully tracked, with most parts leaving the warehouse quickly.
Real human support
Talk to actual suspension specialists before and after your purchase — never a call center.





