Mine works fine, in fact it's the ONLY brake on the back wheel of a heavy stretch cruiser. If I lift off the seat I can do hockey stick skids like the old coaster brakes. I also road it around Salt Lake City without worry, and I was in the mountains above the main part of the city. Long descents were no problem for it in my experience? This is a Nexus Shimano brake on a 7sp. hub of the same model name.,,,,BD
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So many bikes, so little dime.