Borla CrateMuffler BBC 396 2.5 inch Offset/Offset 14in x 4.35in x 9in Oval Muffler 2020-mazda-mx-5-miata-rf-100th-anniversary-special-edition-esi6486269 System contains Polyphonic Harmonizer and

System contains Polyphonic Harmonizer and SwitchFire(r) Technology

Transverse Flow design

Fits ZR2 & AT4X models

Upgrade your TRX or RHO with these 5" round angle-cut bright chrome on T-304 stainless steel tips

Borla CrateMuffler BBC 396 2.5 inch Offset/Offset 14in x 4.35in x 9in Oval Muffler 2020-mazda-mx-5-miata-rf-100th-anniversary-special-edition-esi6486269 System contains Polyphonic Harmonizer andBORLA(r)'s CrateMuffler(r) is the world's first muffler purpose built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. This muffler is tuned for the Chevrolet Big Block 396 402 427 CID V8 engine family. The directional design provides the classic S Type sound and will dramatically reduce, or eliminate drone on specified applications.