SHIMANO R9100 BCD (4-bolt AERO) Oval Narrow Wide Chainring
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SHIMANO R9100 BCD (4-bolt AERO) Oval Narrow Wide Chainring

$3.00
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Model  46T or 48T or 50T or 52T or 54T or 56T or 58T Colour Black Made from 7075-T651 Aluminum Alloy Surface coating Anodizing Made with CNC milling Chainring shape Oval Timing 108° after TDC (top dead center) Compatible cranksets 110 BCD (4-bolt AERO)  SHIMANO R9100 Weight, grams  110 (46T), 120 (48T), 138 (50T), 155 (52T), 169 (54T), 181 (56T), 196 (58T) Chain compatibility Standard 12 speed  Support paying an extra $10 to customize the same silver color  Bicycle shop or dealer contact customer service                     OVAL CHAINRING ADVANTAGES Multiple muscles are responsible for the balanced output More stable Give full play to the strength better and steadily It is more convenient to shake the bicycle Suitable for long distance, more effective to maintain their physical fitness

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