Nameless Axleback Exhaust 4" Mufflers 3" Double Wall Polished Tips Subaru WRX 15-21 / STI 15-21 | SUAB15WRX-4MU-30SDW vendor_P3 Gauges We saw an 11 -

We saw an 11 - 12 horsepower peak gain and 32 horsepower gain throughout the mid-range over the factory intake system

eliminating boost leaks common in OEM and cheap aftermarket BPVs

No bumper removal needed

Part #: KCA425M

Nameless Axleback Exhaust 4" Mufflers 3" Double Wall Polished Tips Subaru WRX 15-21 / STI 15-21 | SUAB15WRX-4MU-30SDW vendor_P3 Gauges We saw an 11 -Fitment Information: 2015 2021 Subaru WRX 2015 2021 Subaru STI (will NOT fit the 2019 STI or the 2018 STI R A) Fitment note: This product only fits with an OEM, or OE fitment, mid pipe. It WILL NOT work with the SPT exhaust, or other aftermarket exhaust systems. Features: Looking for a quick sound and looks upgrade? The Nameless Performance Axleback Exhaust is a great way to start. Removing the two factory 13. 5lb restrictive baffled mufflers in lieu