King Shock bearing—F1 or F2

[ChasingSand]

Bearings on my bypasses are done for and need recommendations for either the F1 or F2 bearing. Anyone have any input?

 

[Grease Monkey]

I don't know if it really matters, considering our use compared to the desert guys.

 

[lincster]

FK has spherical bearings/heims with F1, F2 and F3 ratings.
F1 is stiffest.
I use only F1 on all bearings.
They last longer.