A'PEXi N1 Evo Extreme Quad Tip Catback Exhaust 2015-2021 WRX / 2015-2021 STI Product Pubished - Ideal for Subaru WRX and

Ideal for Subaru WRX and BRZ owners looking to boost engine potential with a trusted upgrade

Always verify fitment for your specific 2016-2017 WRX STI model and trim before purchase

designed to enhance driveline stability and throttle response

carefully spray tested and matched in sets of four by HKS to guarantee consistent flow rates and spray patterns

A'PEXi N1 Evo Extreme Quad Tip Catback Exhaust 2015-2021 WRX / 2015-2021 STI Product Pubished - Ideal for Subaru WRX andThe N1 X Evolution Extreme is based on the proven performance basics of the N1 muffler which emphasizes optimum exhaust efficiency utilizing a straight thru layout design. Equipped with an internal hybrid silencer uniting power and free flowing characteristics with effective functional sound resonance. A newly adopted muffler tip completes the tail end of the exhaust that serves both purposes of function and form. Constructed with a light weight