Invidia Q300 Catback Exhaust Titanium Tip Civic Si Coupe (2006-2011) Hyundai This Perrin Blow Off Valve

This Perrin Blow Off Valve cap

(Not for all vehicles)

Spring Rates: F: 3

The aluminum pipe is a direct replacement of the factory piece where the air intake filter box is retained in its original position

but the important thing to notice is the magnitude of the temperature fluctuations

Invidia Q300 Catback Exhaust Titanium Tip Civic Si Coupe (2006-2011) Hyundai This Perrin Blow Off ValveThe 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