Then those are the temps to aim for! 80 seems to be about tops for two strokes, though obviously the gauges aren't the most accurate in the world and each bike is different.

Do you mean it was designed to run without a fan and a thermostat or that's how it's ended up?
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball