The Shimano Dura-Ace R9200 12V 52T chainring has the optimal balance of stiffness, strength, weight. Compatible with FC-R9200 models.
outer: aluminum (anodized), carbon fiber reinforced plastic (CFRP)
inner: aluminum (anodized)
teeth 52 or 54
Specific References
SHIMANO Chainring 36T for...
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SHIMANO Chainring Dura-Ace FC-R9200
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