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
Transform the exhaust character of your BMW M235i (F22, non xDrive) with this Milltek Sport Resonated Cat-Back Exhaust System. Designed as a direct OEM replacement, this system delivers a refined but notably improved exhaust tone — louder and more characterful than standard whilst retaining day-to-day comfort thanks to the resonated design. Perfect for the M235i owner who wants a quality upgrade without compromising refinement.
Available in three tip finish options and designed to bolt straight on to the existing downpipe and catalysts with no modifications required. Manufactured from 304L stainless steel in the UK.
Fitment: BMW M235i F22 (Non xDrive only)
E-marked: EC approved
Tip options: Polished (SSXBM987), Cerakote Black (SSXBM988), Titanium (SSXBM1028)
