Super narrow lightweight 11-speed HG-EV symmetrical design chain for smooth shifts & maximum durability Key

Features:

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Elite road racers demand reliable & precise shifting, 11-speed Dura-Ace R9150 delivers with its super-lightweight yet durable design. Key

Features: Synchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur The Di 2 front derailleur's operation is pioneering, smooth shifting is guaranteed thanks to a microchip communication link with the gear levers. What's more, shifting the rear derailleur automatically trims the front derailleur The biggest difference you will notice is just how much quicker & effortlessly smoother shifting on the front chainrings is, even under load The difference in the effort & time to actuate the shift between mechanical & Di 2 is truly staggering 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 The front derailleur also trims automatically; the cage moves in response to the position of the rear derailleur on the cassette to ensure no chain rub & a quiet unobtrusive ride, enabling you to concentrate on the road ahead Braze-on fit as standard; if your bike does not have a braze-on mount seat tube adapters are available 11-speed E-tube Di 2 compatible Compatible with 50-55 tooth chainrings Total capacity 16T Front derailleur weight is 104 grams

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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. Key

Features: Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth & effortless to shift Synchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur Wireless data network system unit is integrated into mech The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching Low profile Shadow derailleur design Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts 11-30T 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 Direct mount compatible 11-speed E-tube Di 2 compatible Max front difference: 16T Total capacity: 35T Weight is 204 grams

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With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or
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With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or
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Top of the range, high performance Dura-Ace hydraulic disc brake Di 2 STI's give you control, modulation & power with minimal effort in all riding conditions. Key

Features: With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear 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 Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, & a titanium clamp band / fixing bolt Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Free stroke adjustment for pad to rotor contact setting Levers are supplied without electrical cables, as these need to be ordered separately to suit Two ports for use with E-tube electric cables Kit contains left hand bled ST-R9170 STI, BR-R9170 flat mount brake calliper with pads, hoses & mineral oil (without rotors or adapters) Weight: 360 grams a pair


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Top of the range, high performance Dura-Ace hydraulic disc brake Di 2 STI's give you control, modulation & power with minimal effort in all riding conditions. Key

Features: With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear 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 Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, & a titanium clamp band / fixing bolt Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Free stroke adjustment for pad to rotor contact setting Levers are supplied without electrical cables, as these need to be ordered separately to suit Two ports for use with E-tube electric cables Kit contains left hand bled ST-R9170 STI, BR-R9170 flat mount brake calliper with pads, hoses & mineral oil (without rotors or adapters) Weight: 360 grams a pair


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Top of the range, high performance Dura-Ace hydraulic disc brake Di 2 STI's give you control, modulation & power with minimal effort in all riding conditions. Key

Features: With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear 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 Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, & a titanium clamp band / fixing bolt Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Free stroke adjustment for pad to rotor contact setting Levers are supplied without electrical cables, as these need to be ordered separately to suit Two ports for use with E-tube electric cables Weight: 360 grams a pair


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Top of the range, high performance Dura-Ace hydraulic disc brake Di 2 STI's give you control, modulation & power with minimal effort in all riding conditions. Key

Features: With Di 2 technology shifting is easy & precise
- just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear 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 Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, & a titanium clamp band / fixing bolt Drop bar STI with shift buttons located in a near identical place to the positions you'd assume shifting using a mechanical Shimano STI Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Finely tuneable reach adjusters for the levers enable custom fitment for all hands Free stroke adjustment for pad to rotor contact setting Levers are supplied without electrical cables, as these need to be ordered separately to suit Two ports for use with E-tube electric cables Weight: 360 grams a pair


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With several years of development & working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter Hollow Tech II 11-speed Dura-Ace chainset.

Features: Accurately calibrated strain gauges are integrated inside both left & right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth & ANT with wireless firmware update & data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity & increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading Hollow Tech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, & improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for enhanced contact providing more efficiency & enhanced power transfer There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability

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