I sent them an email asking about the stealth vs Supersport options as well as the 'stepped system' and here's the answers I got.
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Hello,
The terms stealth and supersport describe our mufflers. The stealth is our street version; it's smaller diameter inner core makes it quieter (2-3db's) than our supersport. The supersport's larger diameter core makes it less restrictive with exhaust flow, making it ideal for racing.
The race system for the ZX9 involves a different design than our regular system, but the R&D is not completed for this system. It will possibly involve a step elbow that exits at a lager diameter and will require a specially modified muffler to slip onto it. However, the design stage is not completed yet, and are not available from distributors. Sorry about that.
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***********
Hello,
The terms stealth and supersport describe our mufflers. The stealth is our street version; it's smaller diameter inner core makes it quieter (2-3db's) than our supersport. The supersport's larger diameter core makes it less restrictive with exhaust flow, making it ideal for racing.
The race system for the ZX9 involves a different design than our regular system, but the R&D is not completed for this system. It will possibly involve a step elbow that exits at a lager diameter and will require a specially modified muffler to slip onto it. However, the design stage is not completed yet, and are not available from distributors. Sorry about that.
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