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Choose the 110 BCD version if you plan to use 50-34 or 52-36 chain rings. Choose 130 BCD version is for 53-39 chain rings and bigger (minimum chain ring size 38). Choose 110 Shimano 4 hole if you intend to use chain rings with a 4 bolt pattern.
Please select the crank length of your FSA Gossamer Megaexo crankset.
Optional Choice: Choose a colored ring for your NG power meter. (free of charge)
Optional Choice: Praxis Works or Rotor chainring set:
52-36 (semi - compact)
Optional choice: Add chainring bolts to your order.
Optional choice: Add a bottom bracket to your order.
Optional Choice: Add a colored battery cap to your order.