rubber inserts on cylinder fins

[03svrider]

what are the rubber inserts on the fins of my 81gs450? there are two on each side of the cylinder fins. just curious.

[Calvin Blackmore]

vibration dampeners

[Dan Ruddock]

vibration dampeners

Which will make the engine quieter. Dan

[03svrider]

cool. thanks.

[DimitriT]

I've recently run with them and without them. I can't tell the difference.

They are located where they can block airflow. Maybe their job is to keep the outer cylinders from getting too cool, relative to the inner ones.

[Calvin Blackmore]

wont constant vibration if unchecked lead to cracking of the fins?

[Nerobro]

they're there to help prevent fin cracking. It also affects engine noise slightly. Leave them in place if you like your motor cool.