2012 Shimano Di2 Electronic ST-7970 Shifters

• Just a simple press of a button transmits shift impulses in fractions of a second - that's 30% faster than the mechanical Shimano Dura-Ace ST-7900 Dual Control Levers
• Slim, unidirectional carbon brake levers with a revised pivot location provide better braking modulation, reduce weight and are functionally refined for a more comfortable grip
• Reach adjust mechanism accommodates smaller hands and a wide assortment of bar ends
• Smooth bracket design is ergonomically shaped for comfort - perfect for long distance riding
• Titanium fixing hand and bolt offer further weight savings
• Must be used in conjunction with the Shimano Dura-Ace Di2 FD-7970 Braze-On Front Derailleur, Shimano Dura-Ace Di2 RD-7970-SS Rear Derailleur, Shimano Dura-Ace Di2 7970 SM-BTR1 Battery Pack and Shimano Dura-Ace Di2 7970 Wire Kits