Designed for specific vehicles the Injen Titanium Tip (TT) Edition gives the Super SES exhaust line its added flare. With a more aggressive burnt titanium tip finish larger diameters (where applicable) and featuring a slip fit design- the Injen SES TT edition has proven to be the next best thing since the release of the SES line. Performance Exhaust System, Part No. SES1204TT, 2008-2014 Subaru Impreza WRX STI H4-2.5L Turbo, 2011-2014 Subaru Impreza WRX H4-2.5L Turbo. Titanium Tipped AxleBack System Subaru 2008-13 Sti2.5L Turbo 5 door 2.5 L turbo76mm Axle-back exhaust w/quad Titanium tips