Invidia Q300 Catback Exhaust Civic Si Sedan (2006-2011) Nissan the length of the threaded

the length of the threaded rod is different to account for the difference in the depth of the bumpers between the cars

- 80% torque capacity over stock

The Mishimoto performance aluminum radiator for the Evolution X is designed to maximize cooling efficiency by up to 30%

The OEM Subaru part #'s are 41031AA281 & 41031AA290

NOTE: TThis kit is street legal in all 50 US states

Invidia Q300 Catback Exhaust Civic Si Sedan (2006-2011) Nissan the length of the threadedThe 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