Shimano BR-RS505 Shift Lever Compatibility

If I can add my thoughts on this, It seems to me like this is a misunderstanding I keep hearing. It seems like the hose diameter shouldn’t have any impact on the braking power. All it does is reduce the volume of fluid in the lines. The cylinder will push the same volume of fluid regardless of the hose diameter, the fluid just needs to flow farther/faster through the hose. I am guessing the thinner ID is a result of a stiffer housing, and this is how better feel and less squish is achieved.

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