bike has 25,000 miles on it. 6 weeks ago it would top out according to speedo 181 mph. clutch not slipping at all, bike will just not rev. at higher rpms. i ran it threw the gears and rolled on in 6th and will not go past 136mph. rpms will not climb past 10,000 - 10,500. the higher the rpm the more power is lost. i took out power commander, tre and no change. fuel pump is very loud when key is turned on but fuel pressure checked out totally fine. valves are in spec. sparks plugs look real good. i just don't know but the problem started all the sudden. bike does not smoke nor use oil. will have compression checked next.