Buy now. Pay later on Shimano Dura Ace Di 2 7970 10 Speed Rear Derailleur. Shimano Dura Ace Di 2 7970 10 Speed Rear Derailleur: Digital Integrated Intelligence or Di 2: with programmed automatic motion at the touch of a switch the Dura-Ace Di 2 rear derailleur is quick, smooth & effortless, making for unmatched drivetrain efficiency. Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth & effortless to shift. The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts. For details on how to install Shimanos Di 2 drivetrain please view their Di 2 Installation guide 11-27T wide gear ratio capacity will cater for compact setups as well as the traditional road double. Full carbon fibre inner & outer pulley plates enhance rigidity & reduce weight Titanium B axle bolt for further weight savings. High tolerance cold forged aluminium link plates & body construction is extremely light & durable. Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting. Pulleys are made from tough Du Pont Zytel for longer life & less chain noise. 10-speed Dura-Ace Di 2 compatible. Weight is 225 grams. ...

Shimano Dura Ace Di 2 7970 Frame Cable Set: To ensure that the signal goes from the shifter to the derailleurs, the reliability of the electric cable has been proven by repeated field tests in various riding conditions, including extreme temperatures, rain, mud, & cobble stone roads. The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Dura-Ace Di 2 requires 2 cables: a handlebar cable set to connect the shifters to a battery indicator junction box or Flight Deck, & the other to connect the handlebar cable to the battery & derailleurs. This battery to derailleur cable is available for internal or external routing in different lengths allowing for various frame sizes. External cable sets are ideal for upgrading your current bike to Dura-Ace Di 2 if it does not feature the Di 2 specific internal cable routing. There are 3 lengths of cables available to suit your frame, these are: 875 (890)mm
- for larger frames 790 (830)mm
- for medium frames 705 (770)mm
- for smaller frames For details on how to install Shimanos Di 2 drivetrain please view their Di 2 Installation guide Internal cable sets are for bikes specifically designed for Di 2 to ensure clean lines & minimal rider interference External cables are available in varying lengths, there is no need (or facility) to cut these cables Reliable & secure water resistant connectors


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The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Dura-Ace Di 2 requires 2 cables: a handlebar cable set to connect the shifters to a battery indicator junction box or Flight Deck, & the other to connect the handlebar cable to the battery & derailleurs. This battery to derailleur cable is available for internal or external routing in different lengths allowing for various frame sizes. External cable sets are ideal for upgrading your current bike to Dura-Ace Di 2 if it does not feature the Di 2 specific internal cable routing. There are 3 lengths of cables available to suit your frame, these are: 875 (890)mm
- for larger frames 790 (830)mm
- for medium frames 705 (770)mm
- for smaller frames For details on how to install Shimanos Di 2 drivetrain please view their Di 2 Installation guide


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Shimano Dura Ace Di 2 7970 Handlebar Cable Set: To ensure that the signal goes from the shifter to the derailleurs, the reliability of the electric cable has been proven by repeated field tests in various riding conditions, including extreme temperatures, rain, mud, & cobble stone roads. The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Dura-Ace Di 2 requires 2cables: a handlebar cable set to connect the shifters to a battery indicator junction box or Flight Deck, & the other to connect the handlebar cable to the battery & derailleurs. This battery to derailleur cable is available for internal or external routing in different lengths allowing for various frame sizes. The handlebar cable set is available in two types: one for use without a Flight Deck computer instead using a simple junction box to display battery life; the other is for use with Flight Deck which can providing information like cadence, gear position, battery indicator, & more. Handlebar cables should not be cut to size or modified in any way Reliable & secure water resistant connectors ...

The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Dura-Ace Di 2 requires 2cables: a handlebar cable set to connect the shifters to a battery indicator junction box or Flight Deck, & the other to connect the handlebar cable to the battery & derailleurs. This battery to derailleur cable is available for internal or external routing in different lengths allowing for various frame sizes. The handlebar cable set is available in two types: one for use without a Flight Deck computer instead using a simple junction box to display battery life; the other is for use with Flight Deck which can providing information like cadence, gear position, battery indicator, & more. ...

The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion & stretching, & also provides effortless gear shifts. Simply pressing tactile buttons allows effortless & comfortable shifting even when your hands are cold Buttons are located in a near identical place to the positions youd assume for shifting using a mechanical Shimano STI. Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, & a titanium clamp band / fixing bolt. Brake lever pivot is positioned to increase power providing excellent ergonomics when riding on the hoods. For details on how to install Shimanos Di 2 drivetrain please view their Di 2 Installation guide ...

Shimano’s Synchro Shift customisable programming, allows Dura-Ace Di 2 to offer top level shifting. ...

The Shadow design offers faster wheel changes thanks to the fact that it moves the derailleur out of the way of the dropouts. It also offers faster & more precise shifting than ever before. Shimanos 9150 groupset brings their Syncro-Shift technology to the road too. Syncro-Shift technology enables the front derailleur to read the position of the rear derailleur & will automatically operate the front shift to position the gears in the most efficient gear & best chain line so youll never have to worry about front shifting & correction shifts again. The shadow design places the rear derailleur under the chainstay & cassette to give a slimmer profile, which not only improves aerodynamics but helps prevent damage in a crash. ...

The shift paddles now feature a more defined "click" for confidence in shifting & to prevent mis-shifts, also the shift buttons have been extended in length meaning they are easier to reach from the drops & hoods. E-Tube compatibility means that the function of the shift paddles can be customised to suit the rider. The 9170 shifters now include Synchro-shift technology that automatically moves the rear derailleur when the front ring is changed or moves the front chainring with the rear shifts to optimise chainline & drivetrain efficiency. ...

The 9170 shifters feature an ideal ergonomic shape that is comfortable in the hand & similar in size to mechanical braking versions of the shifter. The shift paddles now also feature a more defined "click" for confidence in shifting & to prevent mis-shifts. E-Tube compatibility means that the shift paddles can be customised to suit the rider. The 9170 shifters now include Synchro-shift technology that automatically moves the rear derailleur when the front ring is changed or moves the front derailleur with the rear shifts to optimise chainline & drivetrain efficiency. The 9170 brake calipers have been tuned to perform optimally in road racing conditions. They feature the Shimano Flat Mount system for a sleek & aerodynamic profile & Ice Tech pads for enhanced heat dissipation. This kit comes pre-bled & ready to use with shifter, hose, caliper & pads. ...