Includes:
• ST-7970 Di2 Dual Control levers
• SM-EW79 'Junction A' front wiring harness
• 'Junction A' controller unit for checking battery power levels, and shifting adjustment
• EW-7970 rear wiring harness available in three lengths for small, medium and large frame sizes
• SM-BTR1 Di2 Lithium Ion battery, battery holder, charger, and power cord for charging
• 'Junction B' for connecting rear wire harness and battery, and to split signals to FD and RD. Mounts under BB shell
• FD-7970 Di2 front derailleur
• RD-7970 rear derailleur
• Dura-Ace BR-7900 brake calipers
• Dura-Ace CN-7901 chain
• Dura-Ace CS-7900 cassette
• Dura-Ace FC-7900 (or FC-7950 compact) crankset
• Dura-Ace FC-7900 bottom bracket