The Greddy Supreme SP for the Scion FR-S & Subaru BRZ features a large horizontally mounted, 3-section muffler with a center inlet and an unique, tuned, internal "Y-pipe." This directs exhaust gases through a center chamber to reduce overall sound and improves flow to the outer straight-through sections.
These outer sections of the muffler have their updated high-temp, internal sound suppression system. The exhaust is finished-off with dual GReddy slant-cut, double-walled tips in the factory bumper outlets. This cat-back exhaust also uses a simplified exhaust pipe routing with a large straight-through resonator in the mid-pipe, to tune-out any drone.