Shimano Dura Ace Di 2 7970 STI Double 10 Sp Road Lever Set: The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di 2 is quick shifting, smooth, & effortless, making for unmatched drivetrain efficiency. 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 Finely tuneable reach adjusters for the levers enable custom fitment for all hands The Di 2 STIs are also compatible with the Flight Deck computer (SC-7900), measuring important data such as heart rate, altitude, cadence, gear position, battery indicator, & more Levers are supplied without electrical cables, as these need to be ordered separately to suit Weight is 255 grams a pair ...

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. ...

For best shifting performance please take a note of the matching outer ring this inner ring need to be paired with. ...

Genuine replacement Dura-Ace FC-9000 chainring. ...

For best shifting performance please take note of the matching outer rings these inner rings need to be paired with. ...

For best shifting performance please take a note of the matching inner ring these outer rings need to be paired with. ...

The clad steel / alloy / steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 deg C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300 deg C, this provides great improvements in performance all round FREEZA rotors allow the alloy core to extend out from the braking surface as a fins to the Centre-Lock mount adapter to providing added cooling Ice Tech rotors achieve long pad life, less noise & less fade due to enhanced heat dispersion Rotors are durable lightweight & rigid, using the proven Shimano Centre-Lock system giving increased strength & security with an easy set-up Precision cut & drilled braking surface improves pad clearing in muddy conditions while aiding cooling under high load Large alloy spider is a highly rigid & lightweight support for the rotor surface ...