Invidia Q300 Catback Exhaust Civic Si Sedan (2006-2011) Nissan Working with a very well

Working with a very well respected tuner

Sound waves

- 80% torque capacity over stock

Boost is increased in a gradual

- Viton O-Ring Gasket

Invidia Q300 Catback Exhaust Civic Si Sedan (2006-2011) Nissan Working with a very wellThe 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