The 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 K24 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 who want great performance with an exhaust note that won’t wake the dead. The Invidia Q300 exhaust is available with rolled stainless tips for maximum durability.
70mm stainless steel piping / 101mm (4 inch) stainless steel tip
06-11 exhaust pictured, actual exhaust will differ slightly