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 Transverse Flow design

Transverse Flow design

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

BORLA(r) Cat-Back and Axle-Back multi-core technology is designed to unleash hidden horsepower

This system features the aggressive ATAK(r) sound and exits through 5" ceramic black on T-304 stainless steel tips

but they are still louder than the S-Type

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 Transverse Flow designBORLA(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.