This catback is made with 70mm SUS304 piping and features two individual mufflers plus a resonator on the midpipe. This is done for ultimate performance gains, as well as creating an exotic appearance and exhaust note. In the recent review in DSport magazine it was one of the quietest exhaust notes at only 104DB at full tilt. It has been compared to the famous Amuse exhaust, at a fraction of the price.