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Old 05-12-20 | 02:48 PM
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dedhed
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Joined: Apr 2005
Posts: 11,548
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From: Milwaukee, WI

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

I believe that to be an either/or style freehub. Either the last cog holds on the cassette which requires 2 chainwhips (or 1 and other methods) or an internal lockring which needs 1 chainwhip and a lock ring tool.

VeloBase.com - Component: Shimano HB-A550 / FH-A550, RX100
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