Invidia Q300 Catback Exhaust Civic Si Coupe (2012-2014) Honda Injen Power Flow intakes are

Injen Power Flow intakes are also specifically tuned for you vehicle

and the appropriate alignment tool

leading to engine failures and premature wear

ACT flywheels for the Evolution X are lighter

Invidia Q300 Catback Exhaust Civic Si Coupe (2012-2014) Honda Injen Power Flow intakes areThe Invidia Q300 catback exhaust system for the Honda Civic Si sounds as good as it looks. The Q300 features mandrel bent 70mm stainless steel piping and a free flowing oval style sport muffler to provide better exhaust flow for improved performance. Bolting up a Q300 to your K20 will allow your Si's sonorous exhaust note to come through loud and clear when you want it to, without producing harsh or overly loud overtones; the perfect choice for those