XR-1 Multi-Core

XR-1(r) Multi-Core Racing Muffler. 3" Center Inlet/ 3" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Long body design works well on SUV & truck applications but can be used on a wide range of vehicles. It features BORLA(r)'S patented Multi-Core 4 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1(r) mufflers flows better than straight tubing. Recommend for high horsepower applications. Reversible design for installation flexibility. T-304 Stainless steel for superior corrosion resistance. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. There is no BORLA(r) 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.

Additional Information

XR-1 Multi-Core Racing Muffler Rotary Engine Equipped Vehicles - 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Product Overview

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.

• 4" Center Inlet/ 4" Center Outlet 6.25" Round x 16" Long Body 21" Overall Length'Multi-Core 4 tube internal design
• Can be used on a wide range of vehicles
• Long body design works well on SUV & truck applications
• Multi-Core 4 tube internal design
• Universal muffler. Reversible design. No BORLA(r) logo embossement.

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Product Details

Reference Information

Muffler, XR-1 Racing, Round Case, Stainless, Brushed, 4 in. Center Inlet/Outlet, 16 in. Case Length, Each

Whether you're drag racing or Circle Track racing, Borla has an XR-1 racing muffler for you. In fact, the 16 in. Shootout mufflers are rated the highest-flowing mufflers on the market.

Features include:
• Straight-through design for maximum flow
• Aircraft-quality T-304 stainless steel construction for reduced weight that will never rust
• All-welded, one-piece design for increased structural integrity
• Stainless steel, sound-absorbing material to protect against burnout