Thread: Chain does not sync with highest gear
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Old 01-09-11, 05:36 PM
  #15  
Al1943
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Originally Posted by FastJake
Why does it have the grooves then? It works as a last-position cog, and its splines are recessed so that they don't interfere with the lockring. It says "G*H K*M - 13T 3 RB" on it if that matters.

The radial grooves help grip the lockring.
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