This Borla bottle/bullet-style resonator drops the sound level of a CrateMuffler by roughly 2-3 dB(A) and also works as a universal resonator in any matching system. The straight-through design lowers tone without degrading performance. 2.5in center inlet / 2.5in center outlet on a 4in round body (10in body, 15in overall). Un-notched necks for weld-in installation; T-304 stainless with CFF packing, a reversible design and no logo embossment.
| Type | Bottle/bullet-style resonator |
| Inlet/Outlet | 2.5in inlet / 2.5in outlet |
| Configuration | Center / Center - un-notched (weld-in) |
| Body | Round - 4in diameter - 10in body - 15in overall |
| Sound Reduction | ~2-3 dB(A) - straight-through |
| Material | T-304 stainless steel - reversible - no embossment |
| Part Number | 400938 |
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