Silent, or at least very quiet. never failed.

none

This is the only freewheel I would use on all my bikes. I loved it cuz it's so silent. the only sound is that of rolling tires. Buy this if you are easily annoyed by the buzz of a freewheel.....king is an exception! all though this was before all bmx bikes came with 9,10,11 tooth one piece cassette drivers. i stripped lots or gears at the bmx race trck, but never a shimano.

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16tooth acs claws, shimano in black. sunringle