The Borla XR-1 Multi-Core is a long-body racing muffler with a 3in center inlet and 3in center outlet on a 6.25in round body (16in body, 21in overall). Its patented Multi-Core 4-tube design flows better than straight tubing for maximum horsepower and torque, and the long body suits SUV and truck builds. T-304 stainless with CFF packing, a reversible design and no logo embossment.
Specifications
| Type | XR-1 Multi-Core racing muffler |
| Inlet/Outlet | 3in inlet / 3in outlet |
| Configuration | Center / Center |
| Body | Round - 6.25in diameter - 16in body - 21in overall |
| Core | Patented Multi-Core 4-tube |
| Material | T-304 stainless steel - 100% welded - no embossment |
| Fitment | Universal - high-horsepower applications |
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