Nameless Performance [15-21 WRX, 15-18 STI] Catback w/ 4″ Double Wall Polished Tips and 4″ Mufflers | SUCB15WRX-4MU-40SDW

Description

The 2015-2021 WRX & 2015-2018 STI catback from Nameless Performance continues a legacy of Subaru exhaust innovation. This full bolt-on system is painstakingly engineered for perfect fitment and long-lasting durability. Handbuilt in our Washington facility, the system can be configured to your sound and style preferences for a tailored solution.

Following closely in the footsteps of the ’11-’14 WRX/STI Sedan Catback, this version includes improvements to fit perfectly on your 2015 WRX with the DIT engine or 2015 STI using the proven EJ series engine. On EJ engines, this catback has demonstrated midrange gains of +32 ft-lbs torque and +22 HP at the wheels beyond a standard Stage 1 tune. These gains come from innovative design features that have made Nameless Performance a top name in Subaru exhaust development.

Key Features:

• Torque-optimized 3″ main circuit with matched flowing 2.25″ Y-pipe feeding dual 2″ rear circuits, outperforming oversized rear tubing designs

• Delivers more midrange torque than most exhausts while maintaining higher than average horsepower gains

• Flow-matched dual rear circuits significantly reduce low-frequency cabin drone at cruise, unlike oversized rear circuits that cause boomy sound

• Constructed from 100% premium T304 stainless steel throughout flanges, tubing, hangers, and perforated muffler tubing

• Mufflers packed with ceramic wool for long life and superior sound dampening in a compact, lightweight design

• Expert hand TIG welding by craftsmen with 40+ years of experience in the Pacific Northwest

• Latch-over V-band clamp assemblies secure non-factory connection points for precise fit and easy adjustment

• Front connection features a conical 3″ flare and proprietary donut gasket for seamless attachment to factory or aftermarket downpipes

Fitment:

• Fits 2015-2021 Subaru WRX (DIT engine) and 2015-2018 STI (EJ series engine)

• Direct bolt-on replacement with no modifications required

Installation:

• Includes all necessary hardware for complete bolt-up installation

• Factory-style connections combined with secure V-band clamps ensure straightforward, adjustable assembly