990 Won't rev past 4500rpm - SORTED!!

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Jughead

Grey Hound
WD Supporter
Joined
Dec 15, 2008
Messages
6,685
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740
Location
Port Elizabeth
Bike
BMW R1200GS Adventure
Have a 990 in the shop that won't rev over 4,5k-5krpm.  At around 4500rpm the motor just dies. As soon as you close the throttle, the power comes back again.  Feels almost like a rev limiter kicking in.

The bike can be ridden as long as you ride it like a granny.

Any ideas where to begin looking?
 
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