Impreza WRX STI Titanium Exhaust System

Titanium Exhaust System for the Subaru Impreza WRX STI: a titanium cat back system about half the weight of the original with valves retained.

Cat back and turbo back systems that keep every catalyst and particulate filter in place. We publish the drone and noise character honestly, because a system that is great on a track day can be tiring on the M6, and trackday noise limits are real. The Impreza STI's EJ257 is a strong engine that punishes poor oil control and aggressive tuning with ringland failure, so we sell the parts to build it properly.

Specification and fitment

• Fits: Subaru Impreza WRX STI, chassis code GD GR GV and VA
• Engine: EJ207 and EJ257 turbo boxer, FA20DIT
• Production dates: 2001 to 2018
• Quality: Parts Only
• Part number: cross referenced to the factory part number for your VIN or chassis number and confirmed before dispatch, because supersessions and market variations are common and one printed number would be wrong for somebody
• The failure this addresses: weight and sound on a car where every kilo matters
• Labour time: about 3 hours
• Coding: none required. Fit it and drive
• Also needed: gaskets
• Torque: to spec
• Weight: about 9 kg
• Warranty: two years, unlimited mileage

What arrives

• Titanium system
• Gaskets
• Hangers

Fitting

Labour guide: about 3 hours. Japanese manufacturers change parts by build date and by market, and grey imports add a second layer to that. Send the VIN or chassis number with the order and we confirm the part against the build data before anything is dispatched. For imported cars send the chassis plate, because the UK registration will not tell us enough. We are an independent parts specialist for Japanese cars. We are not Toyota, Honda, Nissan, Mazda, Subaru or Mitsubishi and are not appointed by any of them; the names are their trademarks and are used here to describe fitment. We stock genuine, OEM and quality aftermarket side by side and every listing says which is which, because the price difference is real and so, sometimes, is the quality difference. Performance modifications must be declared to your insurer before you drive the car. Most specialist insurers are happy with sensible parts; an undeclared modification can void a claim entirely. We do not sell decat pipes, particulate filter deletes, EGR blanks, emulators, or crackle and pop calibrations. They are illegal on a road car in the UK, an MOT failure and they void insurance. Every performance part here keeps the emissions equipment working.

Which version to buy

Parts Only is the parts delivered to you or your garage with our fitting notes. There is one specification of this, because it is the one we would fit to our own cars and a cheaper version would not be doing you a favour.