The Borla XR-1 Multi-Core is a racing muffler with a 2.5in center inlet and 2.5in center outlet on a 6.25in round body (14in body, 18.5in overall). Its patented Multi-Core 6-tube design flows better than straight tubing for maximum horsepower and torque, suiting SUV, truck, rotary and other high-horsepower builds. T-304 stainless with a reversible design.
Specifications
| Type | XR-1 Multi-Core racing muffler |
| Inlet/Outlet | 2.5in inlet / 2.5in outlet |
| Configuration | Center / Center |
| Body | Round - 6.25in diameter - 14in body - 18.5in overall |
| Core | Patented Multi-Core 6-tube |
| Material | T-304 stainless steel - reversible |
| Fitment | Universal - high-horsepower applications |
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