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
Improve your S55's airflow, and power gains will follow.
By removing the inevitable restrictions that the standard paper panel filter gives, our panel filter allows a worthwhile increase in airflow through to the turbos.
We've developed our own range of MMX Performance cotton gauze filters that easily drop into the OE air boxes which provide excellent filtration properties, combined with instant performance increases and induction noise enhancements.
Meanwhile, OEM-standards of design, quality, materials and construction means it fits like a factory part, lasts like a factory part. Sold as a pair.
Put simply, we're confident that these are the best panel air filters you can buy.
Looking for a simple, power-boosting upgrade for your S55-Powered BMW? The MMX panel filters are one of the easiest ways to upgrade the breathing abilities of your 3.0L lump.
Fitting is very straightforward and installed in around 10 minutes, and easily returned to standard, should you ever wish. Not to mention, completely washable and reusable.
