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4L engine in the WRX
Dual Round Rolled Angle-Cut Tips
The muffler features BORLA's Polyphonic Exhaust Harmonizer technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean
The 3" into dual 2
Borla Universal XR-1 Multi-Core Racing Muffler 3.5in Center-Center 14in x 6.25in Round 2020-lincoln-aviator-reserve-esi5683246 4L engine in the WRXXR 1(r) Multi Core Racing Muffler. 3. 5" Center Inlet 3. 5" Center Outlet 6. 25" Round x 14" Long Body 19. 75" Overall Length. Designed for applications where a 6. 25" round body can be used and will work 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.
