Spark makes OEM exhaust for AMG, Lamobroghini and a few other high end MFGs. When we visited their factory a few years ago, I saw small pieces for Supersprint and a few other tuners in production.Spark huh, never heard of them. Sound good, don't look that bad either. Little bit pricy though, what $799 for the slip-on's and $1999 for a full SS system. Hmm… good to know someone else is out there making exhausts for these things.
They actually made the original production prototypes for Ducati.
Unlike many companies, they use a dyno to fine tune their systems. I think they are fairly inexpensive for their quality and compared to Termignoni.