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
BMW 1 Series M Coupé (E82) | Akrapovic | Slip-On Line Exhaust System (Titanium)
Enhance the sound, reduce weight, and unlock performance with the Akrapovič Slip-On Line (Titanium), engineered specifically for the BMW 1 Series M Coupé (E82).
Constructed entirely from lightweight titanium, this system uses a single-muffler, modular design to deliver a deeper, more purposeful exhaust note compared to the factory system—without unwanted drone. In its standard configuration, all exhaust gases flow through the muffler, providing a refined yet sporty sound suitable for everyday driving.
For drivers who want maximum control over volume and character, the system is compatible with the optional Akrapovič Sound Kit. By replacing the internal blocking plate with the valve system, exhaust gases are redirected through muffler bypass outlets at the press of a button, significantly increasing volume and aggression when desired.
Even when fitted to an otherwise standard vehicle, the Slip-On Line delivers measurable power gains and weight reduction, improving both performance and driving engagement. The system can be completed with a set of carbon fibre tailpipes.
Key Features:
Full titanium Slip-On exhaust system
Modular single-muffler design
Deeper exhaust tone with no drone in standard form
Optional Akrapovič Sound Kit for valve-controlled volume
