The difference between good carbon and bad carbon is quiet a few things.
Grade of carbon
The way it is laid
The type- EG wet or dry ,part preg,carbon over glass, etc etc
Fitment is also a major issue
As I see so many componets made for these cars and really some of it excellent work and some of it is seriously beyond poor.
and yes you do get what you pay for.
Regards Ryan
Uber Motorosport