This Blox Racing catback for the Subaru BRZ / Scion FR-S / Toyota 86 is constructed from 100% T304 stainless steel. It features a single 61mm (OD) pipe that feeds into true-dual 51mm (OD) tubing, before exiting the rear. The complete system is mandrel-bent for consistency and precision, and TIG-welded to provide durability and reliability against breakage. The system features CNC machined exhaust flanges that measure 8mm thick and dual canisters with slip-fit 109mm oval tips. Fits both manual and automatic transmissions.