Ok well one part of it is obviously your clutch mate. When it revs to 6 thou and drops off without actually accelerating or increasing speed thats your clutch slipping. Time for a new one.

Also sounds like something else could be wrong aswel. Like an Idle Air Control valve if its stalling. Does it stall in gear AND out of gear. Check that.

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Honda Hannspree Edition CBR 600 RR - SOLD
Yamaha FZ1N - Purchased