The Borla XR-1 Multi-Core is a long-body racing muffler with a 3in center inlet and 3in center outlet on a 5.5in x 8.5in oval body (34in body, 39.25in overall) with reinforcing ribs, designed for Pre-Runner trucks. Its patented Multi-Core 4-tube design flows better than straight tubing for maximum horsepower and torque. T-304 stainless with steel-wool 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 | Oval - 5.5in x 8.5in - 34in body - 39.25in overall |
| Core | Patented Multi-Core 4-tube |
| Material | T-304 stainless steel - steel-wool packing - no embossment |
| Fitment | Universal - Pre-Runner / high-horsepower applications |
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