Explain to me crank bearings/cranks

[Nessism]

I think all of the bikes with roller bearing cranks had low pressure systems, not sure about the two strokes, but I would assume so..

Two strokes have a NO pressure oiling system. They either use premix or a total loss oil injection system.

[TheCafeKid]

Two strokes have a NO pressure oiling system. They either use premix or a total loss oil injection system.

Oh yeah...DUH

[Suzuki_Don]

Do the older bikes with roller bearing have high or low pressure oiling sytems??

Low pressure, high volume.