Shimano Dura-Ace Di2 Rear Derailleur RD-7970-SS
The most precise and fastest gear changing available thanks to electronic technology. This highly innovative digital technology provides a new level of performance for racers and top level riders. The programmed motion controls the speed, position and timing to achieve high level of refinement. To keep the weight low a carbon fiber pulley cage and titanium B axle was used.
- Di2 - Digital Integrated Intelligence - electronic shifting
- Titanium B axle
- Carbon fiber pulley cage
- Programmed motion
- Published weight 225 grams
- Di2 Dura-Ace shiftlevers - ST-7970, ST-7971
- Ten speed only
- 27 tooth max cog
- Di2 wire kit
Note - To complete the Di2 System all items listed below are required.
To maximize the performance and utilize Di2 to its fullest potential it
is very highly recommended all other components(brakes/crankset/ect.) be Shimano Dura-Ace
7900 series.Di2 Dura-Ace Controls or
(Di2 Dura-Ace TT/Tri Brake Lever
& Di2 Dura-Ace TT/Tri Bar-End Shifters)Di2 Dura-Ace Front DerailleurDi2 Dura-Ace Rear Wire kitDi2 Dura-Ace Front Wire KitDi2 Dura-Ace BatteryDi2 Dura-Ace Battery ChargerDi2 Dura-Ace Charger Cable
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