String Theory Garage will be closed to the public from Wednesday, 29th July to Thursday, 6th August for our annual shutdown.
If you need to get in touch, please leave us a voicemail or send an email. Our team will happily get back to you when we return on Friday, 7th August.
Shopping online? Don't worry! Our online store will remain active! We hope to ship orders placed for in-stock items as normal during the shutdown. Anything else will be dealt with upon our return.
Thank you for your understanding, String Theory Garage Team
Unlock the full acoustic capability of the Porsche 911 (991.1) GT3 and GT3 RS's naturally aspirated flat-six with this Milltek Sport Cat-Back Exhaust System. The 991.1 GT3's high-revving engine deserves an exhaust system that matches its character — and this Milltek Sport system delivers exactly that, with a louder, more uninhibited sound that transforms what is already an exceptional driving machine into something truly special.
Available in four variants: Re-use OEM tips for a subtle upgrade, or choose from Polished, Cerakote Black, or Titanium Milltek Sport tip finishes for a full visual and acoustic transformation. Direct bolt-on fitment. Made in the UK.
Fitment: Porsche 911 (991.1) GT3 & GT3 RS
Tip options: Re-use OEM (SSXPO129), Polished (SSXPO126), Cerakote Black (SSXPO127), Titanium (SSXPO128)
