- Additional Information
Shimano Dura Ace 9000 C/Ring 39T
SHIMANO DURA ACE 9000 C/RING 39T
Genuine Shimano replacement part. When your teeth are worn our or bent on your chainring, this is the time to replace it.
An explanation of the A Type and B Type:
A and B type means that Shimano have designed the rings to work with each other providing quiet and smooth shifting. If you do decided to use either A or B Type rings then this is fine, it will shift ok, but perhaps not as effectivily.
A Type uses the ring combination of 42 inner ring with the corresponding 53 outer ring.
B-Type uses the ring combination of 39 inner ring with the corresponding 50, 52 or 53 outer ring.
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