So i trailored my bike alllllllll the way up to NAW for a major maintenance....BTW...the mech...Skip is very good! Anyway thy had a new F4-1000 on the showroom floor with the FBF carbon fiber exhaust on it. It was very clean looking i must admit. I had viewd them on the FBF website but the pics did no justice so i wrote them off. But now seeing them they look great. my question is; has anyone installed them? If so, have you actually noticed or dyno'd and found performance gains? How do they sound?