Grimmspeed Catback Exhaust System, Un-Resonated - Subaru 11-14 WRX , 08-14 STI HATCHBACK - 070045 402 Series 62% Better Flow than OEM

62% Better Flow than OEM – More flow/less restriction

this is particularly important since most setups put the cold air intake directly behind the radiator

5” Diameter 6061 Aluminum Piping – Beadrolled and CNC mandrel bent on a large radius for maximum flow

16-18 Ford Focus RS 2

Includes (4) upper bushings

Grimmspeed Catback Exhaust System, Un-Resonated - Subaru 11-14 WRX , 08-14 STI HATCHBACK - 070045 402 Series 62% Better Flow than OEMWith so many catback exhaust options available, our goal was to create a unique, refined sound in an extremely high quality hand welded system. We've been affectionately referring to it as the gentleman's exhaust around the shop due to its mature tone. Available in both resonated and un resonated options, our catback will be the perfect addition for any enthusiast looking for increased performance with a sophisticated exhaust note. Quick Specs Custom