SRAM 40 Tooth 107mm BCD x 4-Bolt 1x12-Speed X-Sync Chainring Blast Black Model=ThreadFit 24 Bottom Bracket Must purchase battery charger and

Must purchase battery charger and power cable to complete the systemDi2 Battery battery charger and power cable are universal between Dura-Ace 7970 and Ultegra 6770 Di2 systems

bearing# 6805X ID x OD x W (mm) 25x37x7

}Wolf Tooth Elliptical 110 BCD Chainring - 38t 110 BCD 5-Bolt Drop-Stop 10/11/12-Speed Eagle and Flattop Compatible Black

Now pair it with the remarkable new XX SL Eagle Transmission (T-Type) direct mount chainring

}Onyx BMX Ultra Rear Hub - 3/8" 10 x 100mm Rim Brake Black 36H

SRAM 40 Tooth 107mm BCD x 4-Bolt 1x12-Speed X-Sync Chainring Blast Black Model=ThreadFit 24 Bottom Bracket Must purchase battery charger andSRAM 40 Tooth 107mm BCD x 4 Bolt 1x12 Speed X Sync Chainring Blast Black. SRAMs X Sync Road Chainrings are designed for provide maximum control when used with AXS road cranksets. X SYNC wide tooth narrow tooth chainring technology provides maximum chain control Laser etched chainring finish is more durable X Range gearing technology gives you more range and a smoother gear progression so youre always in the right gear Can be installed with a single