The master cylinder on an Aero Chassis Plus 8 is barely 10cm from the catalyst... BUT it is wrapped in heat shielding material, as is the cat.
After 9 years and close to 46,000 miles the brakes are as good as ever.
So how did MMC end up with heat degradation of the master cylinder seals?
I took a look at a Plus 6 master cylinder: no branding on either side or the top.
I stand by my original statement, value engineering, made worse by poor engineering design.

Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...