Shimano Ultegra FC-6603 Triple 39T Chainring

OE Shimano Ultegra 6603 triple specific, 10 speed middle chainring. Although it is a 130mm bolt pattern, the teeth are profiled to match rings on both sides - hence it is a true "middle" chainring. It receives the same treatment as other Ultegra 6600 series rings - hard anodizing, ramping and pinning. Classic Ultegra: great product, great price.


  • 39 tooth 130mm BCD
  • "39-D" triple specific chainring
  • Replaces middle chainring on Ultegra 6603 triple 10-speed crank
  • Made in Japan
  • $38.95


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