Borla 13-15 Subaru BRZ/Scion FR-S 2.0L 4Cyl RWD Single Split Rr Exit Touring Exh Rear Section OnlyBorla 13 15 Subaru BRZ Scion FR S 2. 0L 4Cyl RWD Single Split Rr Exit Touring Exh Rear Section Only System features polished T 304 stainless steel tips. Borla Cat Back & Axle Back exhaust systems feature patented straight through and multi core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere.