HKS Super Turbo Muffler Titanium Cat Back Exhaust Subaru WRX / STI 2015-2021 | 31029-AF013V vendor_Sikky Built-in check valve (Walbro pump)

Built-in check valve (Walbro pump) for improved fuel control and system stability

Fuel Injector Clinic injectors are set up to and include all o-rings needed to fit the factory application for the listed vehicle

Reduced pressure drop for improved airflow

Properly sized for most off the shelf front aero solutions to properly balance nearly all OTS front aero parts for the twins

HKS Super Turbo Muffler Titanium Cat Back Exhaust Subaru WRX / STI 2015-2021 | 31029-AF013V vendor_Sikky Built-in check valve (Walbro pump)Fitment Information: 2015 2021 Subaru WRX 2015 2021 Subaru STI Features: Improves the exhaust flow Reduces turbo lag Creates more power, performance, and improves the low end torque Material: Titanium (TP270) Tip Diameter: 3. 54 inches Main Tip Diameter: 2. 36 inches Sound Profile: VAB: 85dB (70dB) VAG: 81dB(57dB) The HKS Super Turbo Muffler Titanium exhaust reduces weight from 51lbs to just 29lbs! Once stepping on the accelerator with this exhaust