BDop Chain Rings Road Rings $14.99~$34.99US Crank: 5-Bolt 110BCDSizes: 34T/50T Road Rings $19.99~34.99US Crank: 5-Bolt – 130BCDSizes: 39T/53T MTB Rings $14.99~34.99US Crank:4-Bolt-64/110BCDSizes: 22T/32T/42T Alloy Chainring Bolts $14.99US Qty: 5pcColour: Silver BDop One-By Chainrings $14.99US Crank: 5-Bolt – 110BCDSizes: 38T, 40T, 42T BDop One-By Kit Road-Disc $119.99US Hub: BDop R142-11 Freehub: Shimano 10/11Sizes: 38T, 40T, 42Twith Chainring Bolts BDop One-By Kit Rim-Brake $114.99US Hub: F482SB-XD-RDriver: Sram 11/12Sizes: 38T, 40T, 42Twith Chainring Bolts Track Rings $49.99US~69.99US Crank: 5-Bolt – 144BCDSizes: 48T/49T/50T Chain Ring Bolts $14.99US For Track, SS or One-ByQty: 5pcColour: Black BDop Track Adapter $69.99US Convert: 110 > 144BCDUse Power MeterCrank: 4-Bolt BDop Track Adapter $69.99US Convert: 110 > 144BCDUse Power MeterCrank: 5-Bolt Facebook Instagram Youtube