DURA-ACE Crankset FC-R9100 BB-R9100 番号型番商品名 01Crank Arm Fixing Bolt02Left Hand Crank Arm Unit 165 mmLeft Hand Crank Arm Unit 167.5 mmLeft Hand Crank Arm Unit 170 mmLeft Hand Crank Arm Unit 172.5 mmLeft Hand Crank Arm Unit 175 mmLeft Hand Crank Arm Unit 177.5 mmLeft Hand Crank Arm Unit 180 mm03Clamp Bolt (M6 x 15)04Plate05Ring06Left Hand Adapter (B.C.1.37" x 24T) English Thread (BB-R9100)Left Hand Adapter (M36 x 24T) Italian Thread (BB-R9100)07Inner Cover & O-Ring08O-Ring09Right Hand Adapter (B.C.1.37" x 24T) English Thread (BB-R9100)Right Hand Adapter (M36 x 24T) Italian Thread (BB-R9100)10Gear Fixing Bolt (M8 x 10.1 / 1 Unit = 4 pcs.)11Chainring 34T-MS for 50-34TChainring 36T-MT for 52-36TChainring 39T-MW for 53-39TChainring 42T-MX for 54-42T/55-42T12Chainring 50T-MS for 50-34TChainring 52T-MT for 52-36TChainring 53T-MW for 53-39TChainring 54T-MX for 54-42TChainring 55T-MX for 55-42T13TL-FC24 Adapter Installation Tool14TL-FC34 Adapter Installation Tool