Following the proven design of the 11-14 WRX/STI Sedan Catback, this system is refined to fit perfectly on the 2015 WRX with the DIT engine and the 2015 STI using the trusted EJ series engine. Testing on the EJ platform shows midrange gains of +32 ft-lbs torque and +22 HP at the wheels beyond a standard Stage 1 tune, achieved through Nameless Performances innovative engineering and flow design.

Key Features:

• Torque-focused 3″ main resonated circuit matched with a 2.25″ Y-pipe feeding dual 2″ rear circuits for optimal flow without oversizing

• Superior midrange torque gains compared to oversized rear tube designs, while maintaining strong horsepower improvements

• Dual 2″ rear circuits reduce low-frequency cabin drone commonly found in oversized exhausts

• 100% T304 stainless steel constructionflanges, tubing, hangers, and perforated muffler tubingensures durability and corrosion resistance

• Compact mufflers packed with ceramic wool provide long life and superior sound dampening compared to larger mufflers

• Hand TIG welded by expert craftsmen in the Pacific Northwest with over 40 years of welding experience

• Latch-over V-band clamp assemblies secure non-factory connection points for a tight, adjustable fit

• Front connection uses a conical 3″ flare with a proprietary donut gasket for easy attachment to factory or aftermarket downpipes

Fitment:

• Fits 2015 Subaru WRX (DIT engine) and 2015 STI (EJ series engine)

• Direct bolt-on installation with no modifications required

Installation:

• Includes all necessary hardware for a complete bolt-up install

• Factory-style connections combined with secure V-band clamps ensure straightforward assembly and fit